Contrec 515 Operation Manual

Operation Manual Application GN01 Natural Gas (AGA-8 Detailed) Flow Computer for Volumetric Frequency Flowmeters 30 August 2021

© Contrec Limited 2021 The instructions given herein cover the general description, installation, operation and maintenance of the subject equipment. Contrec Limited. reserves the right, without prior notice, to make engineering refinements that may not be reflected in this manual. Should any questions arise which cannot be answered specifically by this manual, they should be directed to Contrec Limited for further detailed information and technical assistance. Contrec Limited will not accept any liability for either direct or consequential damages resulting from the use or misapplication of the contents of this manual. Part of the software embedded in this product is eCos - Embedded Configurable Operating System, a trademark of Red Hat. Portions created by Red Hat are Copyright © 1998, 1999, 2000 Red Hat, Inc. (http://www.redhat.com). All rights reserved The software in this product was in part provided by Red Hat and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the author be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage. Contrec Limited Riverside, Canal Road, Sowerby Bridge, West Yorkshire HX6 2AY UNITED KINGDOM Tel: +44 1422 829944 Email: [email protected] Website: www.contrec.co.uk Contrec Systems Pty Ltd 5 Norfolk Avenue Ringwood, Melbourne 3134 AUSTRALIA Tel: +61 4 413 505 114 Email: [email protected] Contrec - USA, LLC 916 Belcher Drive Pelham AL 35124 USA Tel: +1 (205) 685 3000 Fax: +1 (205) 685 3001 Email: [email protected] Publication No: 515-GN01-OM - 30 August 2021

iii Safety Notice The information in this safety notice is for the prevention of injury to personnel and damage to the instrument. The manufacturer assumes no liability for injury or damage caused by misuse of the instrument or for modifications made to the instrument. This document must be consulted in all cases where the following “Caution” safety symbol is used : Qualified Personnel The instrument must be installed, operated and serviced by persons who have been properly trained and authorised. Personnel must read and understand this manual prior to installation and operation of the instrument. Refer to section 3 for further information regarding permitted maintenance operations. The safety of any system incorporating the equipment is the responsibility of the assembler of the system. Static Hazard The 500 series flow computer uses high speed CMOS circuitry which is sensitive to static damage. The user should observe accepted safety practices for handling electronic devices, especially during servicing. Once the unit is installed, grounded and interconnected, the chances of static damage are greatly reduced. Voltage Hazard Before connecting power to the instrument, ensure that the supply voltage for the AC or DC input is suitable. The AC voltage rating is as stated on the instrument rating plate. Personnel should take all due care to avoid electric shock. For safe operation it is essential to connect a mains safety earth to the A.C. power inlet. Do not operate at altitudes above 2000m. Welding Hazard Do not perform electric welding in close proximity to the instrument or its interconnecting cables. If welding in these areas must be performed, disconnect all cables from the instrument. Failure to do so may result in damage to the unit. Moisture Hazard To avoid electrical faults and corrosion of the instrument, do not allow moisture to remain in contact with the instrument. Operate only in a clean, dry and pollutant-free environment. Operating & Storage Temperature Operating: If a heater is being used, DO NOT isolate the instrument in temperatures below -20°C. Storage: DO NOT store the equipment below -20°C. 515 GN01 - 30 August 2021

Disconnection Device When powered from a mains supply this unit requires the provision of a suitable mains isolation device, capable of interrupting both poles of the supply and meeting your local wiring regulations, to be suitably located and easily accessible near to the installed instrument. It must be marked as the disconnecting device for the equipment. It must be suitably rated with respect to the cross sectional area of the supply conductors. Instrument Disposal Contrec instrumentation should not be thrown into the general waste system. If within EU member states, this instrument should be disposed of according to the guidelines set by the WEEE (Waste Electrical and Electronic Equipment) directive 2012/19/EU. If outside of the EU, this equipment should be responsibly disposed of according to local and national regulations for EEE (Electrical and Electronic Equipment). By not discarding of this product along with other house hold waste you are preserving natural resources and reducing waste sent to landfill and incinerators. Remove batteries and dispose of separately (see Disposal of Batteries) before disposal of Contrec instrumentation. Disposal of Batteries Batteries have an environmental impact. Safe and responsible disposal should be undertaken. In all EU member states, as per Directive 2006/66/EC, batteries must not be thrown away with general waste. Contact your local environmental authority for information regarding disposal or recycling of used batteries, alternatively they can be returned directly to Contrec Ltd. for disposal. Please Contact Contrec Ltd before returning batteries for disposal. Explanation of IEC Symbols Used You should familiarise yourself with the following symbols which are used both within this manual and on the instrument itself. This document must be consulted in all cases where the following “Caution” safety symbol is used. DC Input (DC). AC Input (AC). Protective Earth Terminal.

v 1 Introduction Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Analog Input Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Displayed Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Main Menu Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Isolated Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Relay Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Software Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Analog Input Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Limitations of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 Specifications Specification Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3 Installation & Maintenance Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Cleaning and Decontamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Terminal Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Terminal Wiring Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Relay Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Mains Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Frequency Input Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Analog Input Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Logic Input Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4-20 mA Output Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Pulse Output Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Control Relays (Alarms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 RC Network for Interference Suppression . . . . . . . . . . . . . . . . . . . . . . 22 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 COM-1 RS-232 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 COM-2 RS-485 Port Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 COM-2 Ethernet Port Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Mains Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Earthing and Shielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Disconnection Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Battery Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Contents 515 GN01 - 30 August 2021

4 Operation Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Default Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Front Panel Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Remote Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Main Menu Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Detail and Basic Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Peak Flowrates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Data Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Model Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 5 Instrument Calibration Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Calibration View Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Calibration Set Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Changing the Instrument Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Program Backup & Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Backup via 500 Series Program Manager . . . . . . . . . . . . . . . . . . . . . . 39 Printing Configuration Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Upload and Clone of Application Software . . . . . . . . . . . . . . . . . . . . . 39 Calibration Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Instrument Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Units of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Time Settings and Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 General Setup Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Test Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 System Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Warning Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 6 Communications Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Hardware Interconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Simple ASCII Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Requests Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Instrument Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Corrupted or Invalid Requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Modbus RTU Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 List of Data Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Printer Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Types of Printouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

vii Printer Data Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Appendix A Glossary Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Appendix B Model Numbers Product Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Custom Version Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Application Information Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Appendix C Ethernet Port & Setup Ethernet Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Connecting 515 Ethernet to Networks/Routers . . . . . . . . . . . . . . . . . . . . . 90 Connecting DataMod via Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

ix 515 GN01 - 30 August 2021 List of Figures 1 Typical Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 500 Series Instrument Panel Mounting . . . . . . . . . . . . . . . . . . . . . . 11 3 Rear Panel Connections - Original . . . . . . . . . . . . . . . . . . . . . . . . 12 4 Rear Panel Connections - New RS485 Version . . . . . . . . . . . . . . . . . . 12 5 Rear Panel Connections - New Ethernet Version . . . . . . . . . . . . . . . . . 13 6 Externally Powered Voltage Transmitter . . . . . . . . . . . . . . . . . . . . . 16 7 Internally Powered Voltage Transmitter . . . . . . . . . . . . . . . . . . . . . 16 8 Externally Powered Current Loop . . . . . . . . . . . . . . . . . . . . . . . . . 17 9 Internally Powered Current Loops . . . . . . . . . . . . . . . . . . . . . . . . 17 10 RTD Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 11 Logic Inputs Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . 19 12 Output 4-20 mA Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . 20 13 Output Pulse Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . 20 14 Relay Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 15 RS-485 Interface Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 16 Logged Data Display Methods . . . . . . . . . . . . . . . . . . . . . . . . . . 32 17 Calibration Menu Tree Sheet 1 . . . . . . . . . . . . . . . . . . . . . . . . . . 40 18 Calibration Menu Tree Sheet 2 . . . . . . . . . . . . . . . . . . . . . . . . . . 41 19 RS-232 Cable Connections to a Computer . . . . . . . . . . . . . . . . . . . . 65 20 RS-485 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 21 DataMod - Modbus Connection Settings . . . . . . . . . . . . . . . . . . . . . 91

1 Chapter 1 Introduction Features • AGA-8 Natural Gas Detail Characterization Method calculations for gas compositions with up to 21 components • Gross heating values calculated to ISO 6976:1995 and GPA Standard 2172-96 • Allows quadrature flow input for ISO 6551 level B pulse security • Selection of Detail or Basic main menu to suit operator and application • Selection of second language and user tags • RTC logging with over 1000 entries. • Programmable pulse width and scaling of pulse output • 4-20 mA retransmission • RS232 and RS485 or Ethernet (optional) serial ports • Modbus RTU, Printer and other serial port protocols • Front panel adjustment of 8-24 V DC output voltage • Backlit display Overview The 515 GN01 application measures the volume, mass and gross heat content of natural gas. The instrument uses a frequency volumetric flow input and analog temperature and pressure sensor inputs. The instrument is compatible with a wide range of flowmeter frequency outputs. Millivolt signals, reed switches, Namur proximity switches or pulse trains can be selected via its smart front-panel programming. The AGA-8 Detail Characterization Method is used to obtain accurate values of density and compressibility factors for the flow calculations. 515 GN01 - 30 August 2021

Calculations The following equations identify the derivation of some of the displayed variables. If your interest is more in the operation of the instrument, you can skip this section and allow the instrument to take care of the calculations. The gas density and compressibility factor calculations are based on the AGA-8 equations. The calculations are valid for the region: Formulas where: For further details of these equations or restrictions of use please refer to the appropriate standard or relevant documents. Analog Input Scaling The analog inputs in this instrument are scaled by the following general formula: where: -130C < t < 400C -200F < t < 760F P < 280 MPa P < 40000 psia Mflow = mass flow flow = density at flow conditions ref = density at reference conditions Hm = mass gross heating value Mflow Volumeflow   flow = Corrected flow Mflow / ref = Heat flow Mflow  H m = Pmin = minimum point (equivalent to offset) Pmax = maximum point (Pmax – Pmin is equivalent to span) A* = normalised signal (0 to 1) with correction applied for a flow input f A   Pmin Pmax – Pmin   A*  + =

3 Displayed Information The front panel display shows the current values of the input variables and the results of the calculations. The instrument can be supplied with a real-time clock for data logging of over 1000 entries of the variables as displayed on the main menu. This application indicates the type of pressure value being displayed as either gauge or absolute by adding an ‘A’ or ‘G’ to the units of measurement. Standard or Normal reference conditions are indicated by adding an ‘S’ or ‘N’ at the start of the Corrected Volume units or measurement. Main Menu Variables Units of Measurement In the 500 Series instruments there is a wide range of available units of measurement to be selected from. These can be viewed and selected either during initial Software Configuration via the 500 Series Program Manager (see below) or from within the instrument’s calibration settings (if access has been granted) as per Units of Measurement on page 42. Communications There are two communication ports available as follows: • COM-1 RS-232 port • COM-2 RS-485 port (optional) or Ethernet (optional) Main Menu Variables Default Units Variable Type Volume m3 Total Volume Flowrate m3/min Rate Corrected Volume m3 Total Corrected Flowrate m3/min Rate Heat GJ Total Heat Flowrate GJ/h Rate Mass kg Total Mass Flowrate kg/min Rate Temperature Deg C Rate Pressure MPa Rate Compressibility Factor - - - Rate

All types of ports can be used for remote data reading, while RS-232 and RS-485 serial ports can be used for printouts and for uploading and downloading of the application software to the instrument. Isolated Outputs The opto-isolated outputs can re-transmit any main menu variable. The type of output is determined by the nature of the assigned variable. Totals are output as pulses and rates are output as 4-20 mA signals. One output is standard, a second output is available as an option. Relay Outputs The relay alarms can be assigned to any of the main menu variables of a rate type. The alarms can be fully configured including hysteresis. Two relays are standard with two additional relays available as an option. Software Configuration The instrument can be programmed to suit the particular application needs and the flexible I/O can be assigned as required. Program settings can be changed either via the front panel (depending on assigned access levels) or via the 500 Series Program Manager (500-PM software). The 500-PM software is a free comprehensive configuration tool and resource centre that can be used to further tailor an instrument to suit specific application needs including units of measurement, custom tags and text, access levels and more. The software is a Windows based program that is freely available from the download section of the Contrec website. The program can be used to create a custom version of an existing application to be saved for backup purposes and/or to generate a PDF of configuration report for record keeping. The instrument stores all set-up parameters, totals and logged data in non- volatile memory with at least 30 years retention. Analog Input Types Any analog input can be set to accept a 4-20 mA, 0-5 V or 1-5V signal, while any inputs assigned to a temperature sensor can also be set to accept a PT100 or PT500 signal.

5 Figure 1 Typical Application Diagram Limitations of Use Quadrature Pulse Security A quadrature pulse input is available on this instrument for Level B ISO 6551 pulse security and can be used for custody transfer applications. When enabled, the two pulse trains from the quadrature flowmeter should be supplied to frequency inputs 1 and 2. The instrument will check for simultaneous pulses, missing pulses on channel 1 and missing pulses on channel 2. If more than two errors, of one of these fault types, occur within 2000 pulses the instrument will raise a quadrature input exception. The time delay (phase shift) between the pulse trains should be at least 25s. Pulse security checking is performed from the preprogrammed cutoff frequency up to a maximum frequency of 3 kHz. An exception will be raised if the maximum frequency is exceeded. The flow calculations are always based on the pulses received on frequency input channel 1. AGA-8 Limits To achieve the intended accuracy and targeted uncertainty of the AGA-8 standard for the computations of physical properties of gases, the component mole percentages must not be outside the ranges given in the table below. Gas Flow P T Flowmeter Pressure Transmitter Temperature Transmitter Frequency Input 1 Analog Input 2 Analog Input 1

The normal range column gives the range of gas characteristics for which the average expected uncertainty is as low as 0.1% for the region -8C to 62C and 0 to 12 MPa (17F to 143F and 0 to 1250 psia). The expanded range allows for greater flexibility with more pure gases and a wider percentage for gas components but does have an average uncertainty which is expected to be higher, especially outside the above region. (Refer to the AGA-8 standard for more details.) # The normal range is considered to be zero for these compounds. Heating Values The instrument calculates the heating value of natural gas in accordance with ISO 6976:1995 and GPA Standard 2172-96 for dry gas. The wet gas calculations include the latent heat of vaporisation of the water component. This complies with the ISO recommendations and the appendixes to AGA 3 and AGA 8. Note: The GPA standard does not recommend including the latent heat of vaporisation of the water component. However, even for a gas saturated with water vapour at 20C, the value of this latent heat contributes only about 0.1% to the gross heating value and considerably less at lower combustion temperatures. Such a heating value is within the uncertainties of the properties reported in the GPA standard. Component Normal Range Expanded Range Mole percent of Methane 45.0 to 100.0 0 to 100.0 Mole percent of Nitrogen 0 to 50.0 0 to 100.0 Mole percent of Carbon Dioxide 0 to 30.0 0 to 100.0 Mole percent of Ethane 0 to 10.0 0 to 100.0 Mole percent of Propane 0 to 4.0 0 to 12.0 Mole percent of Total Butanes 0 to 1.0 0 to 6.0 Mole percent of Total Pentanes 0 to 3.0 0 to 4.0 Mole percent of Hexanes Plus 0 to 0.2 0 to dew point Mole percent of Helium 0 to 0.2 0 to 3.0 Mole percent of Hydrogen 0 to 10.0 0 to 100.0 Mole percent of Carbon Monoxide 0 to 3.0 0 to 3.0 Mole percent of Argon # 0 to 1.0 Mole percent of Oxygen # 0 to 21.0 Mole percent of Water 0 to 0.05 0 to dew point Mole percent of Hydrogen Sulphide 0 to 0.02 0 to 100.0

7 Approvals This instrument conforms to the EMC-Directive of the Council of European Communities 2014/30/EU, the LVD safety directive 2014/35/EU and the following standards: • EN61326:2013 Electrical equipment for measurement, control and laboratory use – EMC requirements: Industrial Environment. • EN61010:2010 Safety requirements for electrical equipment for measurement, control, and laboratory use. In order to comply with these standards, the wiring instructions in Chapter 3 - Installation & Maintenance must be followed. FCC Declaration This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, might cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense. Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. Contrec Ltd is not responsible for any radio or television interference caused by using other than recommended cables and connectors or by unauthorized changes or modifications to this equipment. Unauthorized changes or modifications could void the user's authority to operate the equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device might not cause harmful interference, and (2) this device must accept any interference received, including interference that might cause undesired operation.

9 Chapter 2 Specifications Specification Table Operating Environment Temperature +5 °C to +40 °C (standard - no coating) -20 °C to +60 °C (with conformal coating) -30 °C to +60 °C (ExD housing with heater) Humidity 0 to 95% non condensing (conformal coating) 5% to 85% non condensing (no coating) Power Supply 100-240 V AC (+/-10%) 50-60 Hz (+/- 10%) or 12-28 V DC Consumption 10 W (max) Overvoltage category II Protection Sealed to IP65 (Nema 4X) when panel mounted Dimensions (panel option) 147 mm (5.8") width 74 mm (2.9") height 170 mm (6.6") depth (behind the panel) Display Type Backlit LCD with 7-digit numeric display and 11-character alphanumeric display Digits 15.5 mm (0.6") high Characters 6 mm (0.24") high LCD Backup Last data visible for 15 min after power down Update Rate 0.3 second Non-volatile Memory Retention > 30 years Data Stored Setup, Totals and Logs Approvals Interference compliance Enclosure IECEx, ATEX and CSA approved enclosures available for hazardous areas Real Time Clock (Optional) Battery Type 3 volts Lithium button cell - For Issue 7 option card, type CR2450N manufactured by Renata only - For conformal coated ‘C’ version, type BR2032 manufactured by Panasonic only - For non-conformal coated versions, type BR2032 and CR2032 manufactured by Panasonic or Sony Battery Life 5 years (typical) Gas Properties Calculations (AGA- 8) Update Rate 1 sec - gas composition unchanged 2 sec - when changed, 10 components 4 sec - when changed, 21 components Frequency Input (General) Range 0 to 10 kHz for Pulse input type 0 to 5 kHz for Coil & NPS input types (3kHz for pulse security) Overvoltage 30 V maximum Update Time 0.3 sec Cutoff frequency Programmable Configuration Pulse, coil or NPS input Non-linearity Up to 10 correction points Pulse Signal Type CMOS, TTL, open collector, reed switch Threshold Signals switch below 1.3 & above 2 volts Coil Signal Type Turbine and sine wave Sensitivity 15 mV minimum amplitude (typical) NPS Signal Type NPS sensor to Namur standard Analog Input (General) Overcurrent 100 mA absolute maximum rating (30mA for 4-20mA inputs) Update Time < 1.0 sec Configuration RTD, 4-20 mA, 0-5V and 1-5V input Non-linearity Up to 20 correction points (some inputs) RTD Input Sensor Type PT100 & PT500 to IEC 751 Connection Four Wire Range -200C to 350C -200C to 800C (PT100 extended range) Accuracy 0.1C typical 0.2C typical (PT100 extended range) 515 GN01 - 30 August 2021

Important: Specifications are subject to change without notice. 4-20 mA Input Impedance 100 Ohms (to common signal ground) Accuracy 0.05% full scale (20C) 0.1% (full temperature range, typical) 0-5 or 1-5 Volts Input Impedance 10 MOhms (to common signal ground) Accuracy 0.05% full scale (20C) 0.1% (full temperature range, typical) Logic Inputs Signal Type CMOS, TTL, open collector, reed switch Overvoltage 30V maximum Relay Output No. of Outputs 2 relays plus 2 optional relays Voltage 250 volts AC, 30 volts DC maximum (solid state relays use AC only) Current 3A maximum - mechanical relays 1.5A maximum - solid state relays Communication Ports Ports COM-1 RS-232 port COM-2 RS-485 or Ethernet port (optional) Baud Rate 2400 to 19200 baud Parity Odd, even or none Stop Bits 1 or 2 Data Bits 8 Protocols ASCII, Modbus RTU, Modbus TCP/IP (Ethernet Port), Printer Transducer Supply Voltage 8 to 24 volts DC, programmable Current 70 mA @ 24 V, 120 mA @ 12 V maximum Protection Power limited output Isolated Output No. of Outputs 2 configurable outputs Configuration Pulse/Digital or 4-20 mA output Pulse/Digital Output Signal Type Open collector Switching 200 mA, 30 volts DC maximum Saturation 0.8 volts maximum Pulse Width Programmable: 10 , 20, 50, 100, 200 or 500ms 4-20 mA Output Supply 9 to 30 volts DC external Resolution 0.05% full scale Accuracy 0.05% full scale (20C) 0.1% (full temperature range, typical)

515 GN01 - 30 August 2021 11 Chapter 3 Installation & Maintenance Installation Instructions The safety of any system incorporating the equipment is the responsibility of the assembler of the system and should be installed such that there is no risk of impact damage. This instrument is intended for fixed installation only, e.g. within a panel or cabinet, and is not intended for desktop use. It is not suitable for outdoor use unless fitted into an appropriate outdoor enclosure with a minimum type 3, IP54, rating. The instrument has a ‘Pollution degree II’ rating. Cleaning and Decontamination For general maintenance or to clean an instrument suitable for return to a service centre for repair or inspection, use only a damp cloth and mild detergent. Do not use abrasive cleaners or high pressure water jets. An instrument must be decontaminated before returning. Panel Mounting The instrument should be located in an area with a clean, dry atmosphere that is also relatively free of shock and vibration. The standard mounting procedure is panel mounting in a cutout that is 139 mm wide by 67 mm high. Two side clips secure the unit into the panel. Figure 2 shows the panel mounting requirements for the 500 Series Instrument. Figure 2 500 Series Instrument Panel Mounting 145 mm Side View 22 mm 70 mm 67 mm 139 mm 25 mm 66 mm Min. 189 mm Panel Cut-out Front Panel 74 mm Mounting Clip 138 mm 147 mm Rear Connectors Top View RS232 Port 515 GN01 - 30 August 2021

12 515 GN01 - 30 August 2021 Electrical Connection Rear Panel Connections N.B. Depending on the specification and age of the instrument, there are different versions of the upper output card. Ensure the instrument is wired as per the correct terminal designation printed on the rear of the instrument bezel and below. Figure 3 shows the connections on the rear panel of the instrument where relays 1 to 4 (terminals 32-35) share a single Relay Common (terminal 31). N.B. The 5 way relay terminal block is GREEN. Figure 3 Rear Panel Connections - Original Figure 4 shows the connections on the rear panel of the instrument where relays 1 and 2 (terminals 32-33) share Relay Common 1-2 (terminal 31) and relays 3 and 4 (terminals 34-35) share Relay Common 3-4 (terminal 36. N.B. The 6 way relay terminal block is ORANGE. Figure 4 Rear Panel Connections - New RS485 Version

515 GN01 - 30 August 2021 13 Figure 5 shows the new option card with the optional Ethernet port in place of RS-485 port (terminals 19-21). Figure 5 Rear Panel Connections - New Ethernet Version Terminal Designations Terminal Label Designation Comment 1 FINP 1+ Frequency Input 1+ Volumetric Flow Input 1 2 FINP 2+ Frequency Input 2+ Volumetric Flow Input 2 3 SG - Signal ground 4 EXC V 1+ Excitation Term 1+ Not used 5 EXC V 2+ Excitation Term 2+ For AINP1 RTD Input 6 EXC V 3+ Excitation Term 3+ Not used 7 AINP1 + Analog Input ch 1 (+) Temperature Input 8 - Analog Input ch 1 (-) 9 AINP2 + Analog Input ch 2 (+) Pressure Input 10 - Analog Input ch 2 (-) 11 AINP3 + Analog Input ch 3 (+) Not used 12 - Analog Input ch 3 (-) 13 AINP4 + Analog Input ch 4 (+) Not used 14 - Analog Input ch 4 (-) 15 Vo + 8-24 volts DC output Overload protected 16 G - DC Ground 17 Vi + DC power input DC power in 12-28V 18 SH E Shield terminal E AC MAINS E Mains ground AC power in 100- 240VAC N N Mains neutral A A Mains active 19 RS485 COM-2 port + RS485 (+) Optional RS485 port may be replaced by Ethernet port. 20 - RS485 (-) 21 G RS485 ground 22 LOGIC INPUTS 1+ Switch 1 23 2+ Switch 2 24 3+ Switch 3 Remote Reset 25 4+ Switch 4 CAL Switch – In field access protection 26 C- Signal ground 27 OUT1 + Output ch 1 (+) 28 - Output ch 1 (-) 29 OUT2 + Output ch 2 (+) 30 - Output ch 2 (-) 31 RELAYS RC Relay Common 1-2 Term 31 - Common 1-4 on legacy option card 32 R1 Relay 1 33 R2 Relay 2 34 R3 Relay 3 35 R4 Relay 4 36 RC Relay common 3-4 Term 36 only available on new style option card RS232 COM-1 port 9-pin serial port Terminal Label Designation Comment

14 515 GN01 - 30 August 2021 Terminal Wiring Insulation Terminals 1-30 are all rated at <35Vdc and wiring with basic insulation is adequate. Use copper conductors only. Relay Wiring Relay terminals are 31-35 or 31-36 depending on the version of option card fitted. When controlling circuits operate at mains voltages, or voltages >35Vdc, it is necessary to use UL/CSA approved cabling with supplementary insulation and a current capacity suitable for the connected circuit. Use copper conductors only. The maximum current must be <5A as stated in sec 2. Where circuits >35Vdc are connected UL/CSA approved cabling with supplementary insulation. 0.75mm², 6A current capacity is sufficient. Mains Power Wiring Only use UL/CSA approved cabling with supplementary insulation and copper conductors. A minimum cable cross section area of 0.75mm² (18 AWG) is required. However, this must be selected with respect to the installed over-current protection device and in accordance with the local relevant Electrical Code of Practice as dictated by the Authority Having Jurisdiction (AHJ). The terminal designations (L/N/E) are clearly indicated just above the mains input connector on the rear panel of the instrument.

515 GN01 - 30 August 2021 15 Inputs Frequency Input Connection Connect pulse or frequency input signals from devices such as: TTL, CMOS, open collector, reed relay switch, coil and Namur proximity switch, as shown below. For better signal integrity, it is recommended to use shielded cable. Refer to Terminal Designations on page 13 for specific terminal numbers for this application. Squarewave, CMOS or TTL Open Collector Reed Relay Switch Coils - with 15 mV minimum amplitude (typical). Namur Proximity Switch 18 Shield Signal Ground 3 Frequency Input (FINPn) + Signal Ground 18 Shield 3 Frequency Input (FINPn) + Signal Ground 18 Shield 3 Frequency Input (FINPn) + NPN PNP +V Signal Ground 18 Shield 3 Frequency Input (FINPn) + ~ 18 Signal Ground Shield 3 Frequency Input (FINPn) + 15 Vo +8V DC 18 Shield NPS Frequency Input (FINPn) +

16 515 GN01 - 30 August 2021 Analog Input Connections All analog inputs can accept DC signals ranging from 0-5V, 1-5V and current signals from 4 to 20 mA. Analog Input 1 (AINP1) can also accept an RTD input (PT100 or PT500) as well as the standard 0-5 V, 1-5V and 4 to 20 mA input. CAUTION Applying levels of input current above the absolute maximum rating (100mA or 30mA for 4-20mA inputs) may cause permanent damage to the input circuitry. 0-5 and 1-5 Volt Inputs For externally powered voltage transmitters, connect each transmitter to a pair of input terminals as shown in Figure 6. Refer to Terminal Designations on page 13 for specific terminal numbers for this application. Figure 6 Externally Powered Voltage Transmitter Connect internally powered voltage transmitters as shown in Figure 7. Figure 7 Internally Powered Voltage Transmitter + - - + Signal Transmitter 18 Shield Analog Input (AINPn) 15 - - + + 16 Vo +8...24V DC DC ground Signal Transmitter 18 Shield Analog Input (AINPn)

515 GN01 - 30 August 2021 17 4-20 mA Inputs For an externally powered current loop, connect the transmitter to the input terminals as shown in Figure 8. Refer to Terminal Designations on page 13 for specific terminal numbers for this application. Figure 8 Externally Powered Current Loop The internal overload-protected power supply has sufficient power for three current loops at 24 V DC (more current loops can be supplied by using a reduced voltage setting). Connect internally powered current loops as shown in Figure 9. Figure 9 Internally Powered Current Loops RTD Input The instrument uses 4-wire RTDs to provide optimum accuracy and stability. It is not necessary to have equal cable lengths for the 4-wire RTDs, but they should be no longer than 50 metres. It is also recommended to use shielded twisted pairs. + - Transmitter Analog Input (AINPn) + - 15 + + - Analog Input + + - Analog Input Vo +8...24V DC (AINPn) (AINPn) Transmitter Transmitter

18 515 GN01 - 30 August 2021 Connect RTD inputs as shown in Figure 10. Figure 10 RTD Connection Only Analog Input 1 (AINP1) is available for RTD connection. Excitation terminal 2 (pin 5) must be used in conjunction with AINP1. It is possible to use two-wire or three-wire RTDs. However, four wires must be taken to the RTD, with the signal and current wires joined as close to the RTD as possible. Note: The RTD has no polarity and can be connected in either direction. However, the excitation and the positive analog input must be connected to one side of the RTD. Similarly, the Signal Ground and the negative analog input must be connected to the other side of the RTD. Logic Input Connection These input(s) are designed to be connected to CMOS, TTL, open collector signals or a voltage free contact switch. A minimum activation time of 300ms is required to guarantee reading of an input. It is possible to read the status of all the logic inputs via a Modbus register even if they are not used for a control purpose in the application. + - - + + 3 Excitation V (EXC V) Signal Ground 18 Shield Analog Input (AINPn) Analog Input (AINPn) RTD

515 GN01 - 30 August 2021 19 A remote push-button key can be connected to the Logic Inputs as shown below in Figure 11. Figure 11 Logic Inputs Connection Diagram Outputs The advanced option for the instrument provides two opto-isolated output ports. Either or both can be used for 4-20 mA or pulse outputs. CAUTION Due to the dual-purpose nature of the outputs, take care not to set the output as an open collector pulse type signal when connected to a 4-20 mA loop circuit. 4-20 mA Output Connection Figure 12 shows the connections for a 4-20 mA output. Output channel 1 uses terminals 27 (+) and 28 (-), output channel 2 uses terminals 29 (+) and 30 (-). Maximum Load Resistance = (Supply-9) / 0.02 ohms C- 23 Logic Input 22 24 25 26 1+ 2+ 3+ 4+ Signal Ground

20 515 GN01 - 30 August 2021 Figure 12 Output 4-20 mA Connection Diagram Pulse Output Connection Figure 13 shows a connection example for a pulse output. Output channel 1 uses terminals 27 (+) and 28 (-). Output channel 2 uses terminals 29 (+) and 30 (-). Figure 13 Output Pulse Connection Diagram 18 + - DC supply 9...24V Load Shield 515 4-20 mA Output (OUTn) + - External Load Resistor 10K Vo +8...24V DC 15 Logic Input Open DC Ground Collector Output 16 Pulse Output (OUTn) Shield 18 500

515 GN01 - 30 August 2021 21 Control Relays (Alarms) The standard instrument has two alarm relays, which can be used to drive external devices such as external relays, LEDs, and audible alarms. The advanced option has four alarm relays. The operation of each alarm relay can be set to various modes as described in Alarms on page 51. On the newer option card the separate common terminal for relays 1 and 2 and another common terminal for relays 3 and 4 allow for different signal or supply types to be connected to the control or alarm devices, as shown in Figure 14. There is also an equipment failure alarm option. This alarm can have normally closed (open) contacts which open (close) when the instrument displays any error message as listed in Error Messages on page 61, or if there is a loss of power to the instrument. The output characteristics of the relays are: Note: Solid state relays (SSR) use AC voltage only. Figure 14 Relay Connection Diagram Maximum Voltage 30 volts DC or 250 volts AC Maximum Current 3 A for EMR, 1.5A for SSR Supply Alarm/Load Relay 1 Relay 2 Relay 3 Relay 4 Alarm/Load Alarm/Load Alarm/Load R2 R1 R3 R4 RC Relay 1-2 Common MOV MOV MOV MOV 500 Supply 1-2 3-4 RC Relay 3-4 Common

22 515 GN01 - 30 August 2021 RC Network for Interference Suppression When driving inductive loads with the relay outputs, it is recommended to use RC suppression networks (often called “Snubbers”), fitted at the load end, for the following reasons: • To limit the amount of electrical noise caused by arcing across the contacts, which may, in extreme cases, cause the microprocessor to act erratically or cause other unwanted interference with connected signals. • To protect the relay contacts against premature wear through pitting or SSR (where specified) against premature failure. RC suppression networks consist of a capacitor and series resistor and are commonly available in the electrical industry. The values of R and C are dependent entirely on the load. However, if the user is unsure of the type of snubber to use, values of 0.25 F and 100  will usually suffice. Note that only UL and mains approved RC suppression networks should be used. The basic principle of the operation is that the capacitor prevents a series of sparks arcing across the contact as the contact breaks. The series resistor limits the current through the contact when the contact first makes.

515 GN01 - 30 August 2021 23 Communications The communication protocols are described in Protocols on page 67. COM-1 RS-232 Port The COM-1 RS-232 port has a 9-pin DB female connector and has the following pinout: Note: The instrument does not require a null-modem cable for connection to a personal computer. Refer to Hardware Interconnection on page 65 for cable termination requirements. COM-2 RS-485 Port Option Up to 32 units can be connected to a common RS-485 bus. Each unit has a unique address that the host computer uses to identify each instrument. Figure 15 shows the connection of several instruments to a computer using the RS-485 port. Figure 15 RS-485 Interface Connections Pin 1 Not used Pin 2 Transmit (TxD) Pin 3 Receive (RxD) Pin 4 Not used Pin 5 Ground Pin 6 Not used Pin 7 Handshake line (CTS) Pin 8 RTS Out Pin 9 Not used 1 2 3 4 5 6 7 8 9 Twisted Pair Load 120 ohms Gnd Gnd Host Computer Comms Gnd + - + - + - Instrument Instrument 19 20 21 19 20 21

24 515 GN01 - 30 August 2021 COM-2 Ethernet Port Option An Ethernet module is an available option, in place of the RS-485 port, if Modbus TCP/IP connection is required. In the programming communication settings, COM-2 should be set to RTU (Modbus), 19200 Baud rate, even parity and 1 stop bit. Mains Connection Earthing and Shielding A case earthing point is provided via the mains inlet. Note that this earthing point is for the case only and there is electrical isolation between this point and all electronic circuits. For EMC purposes, or when the instrument is connected to mains, this point must be connected to a good earth. It is a good practice to use shielded cable for all signal connections to the instrument. Care must be taken to separate signal cables from power cables to minimize interference. Overall earth should be connected at the instrument end only. This connection should be as short as possible and connected to the earthing point on the rear terminal at pin 18. Disconnection Device When powered from a mains supply this unit requires the provision of a suitable mains isolation device, capable of interrupting both poles of the supply and meeting your local wiring regulations, to be suitably located and easily accessible near to the installed instrument. It must be marked as the disconnecting device for the equipment. It must be suitably rated with respect to the cross sectional area of the supply conductors. Maintenance Instructions Occasionally it may be necessary to open the unit in order to change the Real Time Clock battery. No other service operations are permitted. In order to perform these operations and maintain safety it is essential to follow the instructions below. If mounted in an ExD enclosure, before proceeding, refer to the ExD manual for further information. This work may need to be scheduled and carried out in accordance with the local electrical Code of Practice.

515 GN01 - 30 August 2021 25 Battery Replacement INSTRUMENT MUST BE POWERED DOWN 1. Remove the top row of terminal blocks (19-36) Ethernet and RS232 cables if applicable. 2. Remove the two pan head machine screws on each side of the rear panel. 3. Withdraw the option card from the instrument. 4. Firmly press the battery holder tab to release the coin cell battery. 5. Identify the part number of the coin cell which is clearly marked on one side of the cell. 6. Firmly press the replacement coin cell into the holder 7. Reverse steps 1-3 for re assembly. Battery Type Only the battery type and manufacturer stated below should be used. 1. Instruments manufactured with issue 7 option card – CR2450N, Manufacturer RENATA ONLY* 2. Conformal coated “C” version - Type BR2032, manufacturer Panasonic ONLY. 3. Non Conformally coated versions :- BR2032, CR2032, Sony or Panasonic ONLY. *Issue 7 option card can be identified with 6 way (31-36) ORANGE relay connector.

27 Chapter 4 Operation Normal Operation In normal operation mode, you press the buttons on the front panel to display the values recorded and calculated by the instrument. There are four categories of information that the instrument can display: • Totals • Rates • Process variables • Instrument settings For each total, there is an associated rate as follows: Default Total In some applications, one set of variables is of more interest than others, and for this reason a default total and its associated rate can be assigned during instrument calibration. This default total can be used in two ways: • The default variables come first in the sequence of totals and rates that are displayed with the front panel keys. • If the display timeout option is enabled and no buttons are pressed for the selected period (usually 30 seconds) the display returns to the default total. Status LEDs The status LEDs illuminate to show the following conditions: Run The host computer is downloading the application software. Set The instrument is in Calibrate Set mode. Alarm The instrument has an error, as indicated on the display panel. Cal The instrument is in Calibrate View mode. Total Rate Volume Volume Flowrate Corrected Volume Corrected Flowrate Heat Heat Flowrate Mass Mass Flowrate Run Set Alarm Cal 515 GN01 - 30 August 2021

Front Panel Keys For most actions with the front panel keys, you can hold a key to scroll through the values or options, instead of repeatedly pressing the key. Press the key to display the rate that is associated with the currently displayed total. If an item other than a rate or total is displayed, press the key to display the “default rate”. When a rate is displayed, press or hold the key to display the other rate variables in turn. Press the key to display the total that is associated with the currently displayed rate. If an item other than a rate or total is displayed, press the key to display the “default total”. When a total is displayed, press or hold the key to display the other total variables in turn. Use the key to clear all resettable totals or to initiate a printout if the printer option has been selected. The printout is activated with a single press while the Total Reset function has different operation modes that are selectable during instrument calibration as follows: • NONE - The user cannot reset the non-accumulated totals. • INSTANT - When the user presses the key, the instrument resets all non-accumulated totals. • DELAYED - When the user holds the key for two seconds, the instrument resets all non-accumulated totals. The instrument makes three beeps when it resets the totals and two beeps when a printout is started. Pressing the key will also clear a quadrature input exception if the error condition no longer exists. Press the key to step or scroll through the main menu items. Hold the key to display the accumulated value for the currently displayed total or to display the peak value for the currently displayed flowrate. See below for further details of peak flowrates. Remote Reset The Remote Reset on logic input 3 (LINP3) has the same function as the front key, as described above. RATE RATE RATE RATE TOTAL TOTAL TOTAL TOTAL RESET RESET RESET RESET RESET DISPLAY DISPLAY ACCUM ACCUM RESET

29 Main Menu Items The main menu in this instrument consists of the following items. The key is used to step or scroll through the list. DISPLAY  Description Options VOLUME Volume Hold the key to display accumulated total V-FLOW Volume flowrate Hold the key to display peak value C-VOL Gas corrected volume Hold the key to display accumulated total C-FLOW Gas corrected flowrate Hold the key to display peak value HEAT Gas heat content (energy) Hold the key to display accumulated total H-FLOW Gas heat flowrate (power) Hold the key to display peak value MASS Mass Hold the key to display accumulated total M-FLOW Mass flowrate Hold the key to display peak value TEMP Temperature PRESS Pressure Hold the key to view the absolute value if the type of pressure sensor is set to GAUGE. Z-FACT Compressibility Factor REPORT PRINT Only shown in Detail Menu if a printer protocol is used Hold the key to print log report as defined in the TM/LOG section of calibration. LOGGED DATA Only shown in Detail Menu if real-time clock option is installed Hold the key to display data logs as described in Data Logs on page 30. MODEL INFO Only shown in Detail Menu Hold the key to display the Model information as described in Model Information on page 33. CAL MENU Only shown in Detail Menu Hold the key to enter Calibration View mode as described in Calibration View Mode on page 36. DISPLAY ACCUM ACCUM ACCUM ACCUM ACCUM ACCUM ACCUM ACCUM SET SET SET SET SET

Detail and Basic Menu The 515 instrument has the option to switch the main menu from the full Detail menu to a Basic menu. The Detail menu includes all of the main menu variables and the HOLD SET sub menu items as listed above. In the Basic menu only the application or operator essential main menu variables are shown. The main menu variables to be shown in the basic menu need to be selected in the 500 Series Program Manager (500-PM Software) prior to the application software being downloaded to the instrument. The 500-PM Software is Windows based configuration and resource tool for the 500 Series and is freely available from the www.contrec.co.uk website. To switch between the Detail and Basic menu, while in the main menu, press and hold the and keys together for 5 seconds. When switching to the Detail menu the display will briefly show: display DETAIL MENU. When switching to the Basic menu the display will briefly show: display BASIC MENU. When the application software is first installed, the default is the Detail menu. From that point, the menu type is saved and restored on power cycle. The menu type will need to be Detail to access the CAL MENU Peak Flowrates The peak value for the currently displayed flowrate can be viewed by holding the key. The peak value is the average over a 15 minute period since the last reset of totals or powering on of the instrument. Dashes are shown for this value after a reset or power on until the first averaging period has passed. Data Logs The instrument will log the main-menu variables if real-time clock option is installed. The logs are at fixed intervals of hours, days, weeks, months and years. The instrument can store a total of more than 1000 log entries. If the number of log entries exceeds the programmed number for a particular time interval, the oldest log entry is overwritten by the newest one for that time interval. Also note that the totals are saved as accumulated totals. DISPLAY SET ACCUM

31 The log entries are recorded at the following times: View Data Logs Use the following procedure to view the data that has been logged by the instrument: 1. Press the key to scroll through the menu to the LOGGED DATA prompt. 2. Hold the key. The system displays the hourly log. The timebase and number of the log are shown, for example LH-001. 3. While holding the key use the key to print the data for the displayed log if the printer option has been selected. HOUR 00 minutes each hour DAY 00 hours and 00 minutes each day WEEK 00 hours and 00 minutes each Monday MONTH 00 hours and 00 minutes on the first day of the month YEAR 00 hours and 00 minutes on the first day of the year. DISPLAY SET DISPLAY RESET

The following example shows the hourly log number 006 at 15:00 (3:00 pm) on 16 January 2019. The day and month alternate with the year in the bottom right hand corner. Figure 16 shows how to display the logged data. Figure 16 Logged Data Display Methods 15-00 LH-006 16/01 15-00 LH-006 2019 LY-nnn LM-nnn LW-nnn LD-nnn LH-nnn LY-002 LM-002 LW-002 LD-002 LH-002 YEAR LY-001 MONTH LM-001 WEEK LW-001 DAY LD-001 … … … HOUR LH-001 Press at any time to exit from the Data Logs SET Hold to show the values for a log entry DISPLAY Press to select the time base Press to select the log number Hold and press to display the main menu variables DISPLAY Variable 2 Variable 1 Error code

33 Model Information The model information items display the hardware, software and application versions of the instrument. This information is mainly for service personnel. Press at any time to exit from the Model information.  Description 2-1--S- 515 MODEL The hardware model code. Refer to Product Codes on page 87 for more information. qq-tP-- GN01 INPUT The Application number and the assignment of the inputs. Refer to Application Information Code on page 88 for more information. 3_0_000 500-PM VERS The version of 500-Series Program Manager from which the application software was compiled. 026357 CUSTOM VERS The Customer version code for this installation. Refer to Custom Version Codes on page 88 for more information. 123456 ABC123 S/N The instrument serial number and unit tag. The serial number is on the top line and unit tag is on the bottom left. Both items are entered when the instrument application software is initially loaded. If the unit tag is not used the default tag, UNIT, will be used. 16-15 EDITED 27/08 2019 The time and date when the calibration of the instrument was last edited. The format of the time and date is the same as for the data logs. This example shows 16:15 (4:15pm) on the 27th August 2019. This function is available only if the instrument has the real time clock option. CLASS-3 FLASH V-019 The instrument Class and Flash (bootloader) version. 5 POWER CYCLE The number of power cycles that have occurred since the application software was installed. 1 WDT RESET The number of ‘watchdog timer’ (WDT) resets that have occurred since the application software was installed. The WDT Reset count is only shown if a WDT Reset has occurred. HOLD.RST CONFIG PRINT If the printer protocol is assigned to one of the communication ports, the prompt to print the full program configuration report will be shown. Hold Reset to start the printing of the configuration report. The report will be in a similar format to the report generated by the 500 Program Manager. DISPLAY SET

35 Chapter 5 Instrument Calibration Introduction The 500 Series instrument calibration settings can be programmed via the front panel, according to program access levels explained below, or via the 500 Series Program Manager - a freely available Windows based configuration and resource tool. After an instrument has been configured by either means to suit the application requirements, the settings can be recorded or application software backups or instrument clones created as explained further in Program Backup & Reports on page 39. You can view or change the settings of the instrument according to the access level for each parameter, as set by the 500 Series Program Manager. There are five levels of access to the parameters as follows: • Not visible - you cannot display or edit the parameter. • Display only - you can display the parameter, but you cannot change the setting. • Programmable - you can change the setting of the parameter in Calibration Set mode. • Password protected - you can change the setting of the parameter in Calibration Set mode only if you enter the correct password. • CAL switch protected - you can change the setting of the parameter in Calibration Set mode only if you enter by using the CAL switch on Logic Input 4 to accept the password. Note: When you enter Calibration Set mode, the instrument prompts to enter a password. Any value will allow to change the settings of the “programmable” parameters, but the correct password must be entered to change the password-protected parameters. Likewise, the CAL switch (Logic Input 4) must be used to accept the password to change the CAL switch protected parameters. 515 GN01 - 30 August 2021

Calibration View Mode Use the following procedure to view the calibration settings of the instrument: 1. Press to scroll to the CAL MENU prompt. 2. Hold the key. The instrument beeps once, illuminates the Cal indicator and shows CAL on the display panel. • Press to scroll through the flashing menu headings. • Press to scroll through submenu items. • Hold to return to the main calibration menu. 3. To exit from the Calibration View mode, press to scroll to the END option and press . The instrument returns to Normal Operation mode. Calibration Set Mode In Calibration Set mode, you can change the settings of the “programmable” parameters. You must enter the system password to change the setting of the “password-protected” parameters and you must use the CAL switch on Logic Input 4 to access the “Cal switch protected” parameters. Use the following procedure to enter Calibration Set mode: 1. Press to scroll to the CAL MENU prompt. 2. Hold the key. The instrument beeps once, illuminates the Cal indicator and shows CAL on the display panel. 3. Press to select any flashing menu heading except END. 4. Hold the key for two seconds, or if “Cal switch protected” items exist the CAL switch can be closed for two seconds. The instrument prompts for a password to be entered if the password is non-zero, otherwise the password prompt is skipped. 5. If the password prompt is shown, press or to change the value of the current digit. To select the next digit, press . 6. Press or use the CAL switch on Logic Input 4 (if “Cal switch protected” items exist) to accept the password and proceed. DISPLAY SET Run Set Alarm Cal SET DISPLAY SET DISPLAY SET Run Set Alarm Cal SET SET

37 7. Proceed and observe the access confirmations. • If the CAL switch is used and the password is correct, the instrument makes two beeps and displays message: -EDIT- CS_PW MODE and enables you to change “programmable”, “password protected” and “CAL switch protected” parameters. • If the CAL switch is used but the password has been skipped or is incorrect, the instrument makes one beep and displays message: -EDIT- CAL_SW MODE and enables you to change “programmable” and “CAL switch protected” parameters. • If the key is pressed and the password is correct the instrument makes two beeps and displays the message: -EDIT- PASSW MODE and enables you to change the “programmable” and “password- protected” parameters. • If the key is pressed but the password has been skipped or is incorrect, the instrument makes one beep and displays the message: -EDIT- PROG MODE and enables you to change only the “programmable” parameters. The instrument illuminates both the Cal and Set indicators. 8. Edit the instrument parameters as required. The programmable values are indicated by the flashing display. • To change a numerical value, press to increase a value, or press to decrease a value. Press a key momentarily to change the value one number at a time. Hold a key to scroll through the numbers. To proceed to next digit, press . • To change an option setting, press or to scroll through the options. 9. Press to accept the currently displayed value and proceed to the next parameter. You can press to briefly view the current edit mode: -EDIT- XXXXXX MODE, as described in step 6 above. Continue to hold the key to return to the main calibration menu. 10.To exit from Calibrate Set mode, press to scroll through the main calibration menu to END, then press . Otherwise, to quick exit from any menu, you can press and hold for two seconds or, if “Cal switch protected” items exist, the CAL switch can be closed for two seconds. The instrument makes two beeps and cancels the Cal and Set indicators. SET SET Run Set Alarm Cal SET DISPLAY DISPLAY SET SET Run Set Alarm Cal

Changing the Instrument Settings In Calibration Set mode, the display flashes the item that can be changed. For option settings, the display flashes the complete option. For a numeric parameter, the display flashes one digit at a time, you can change the value of the flashing digit as required, then move the flashing cursor to change another digit. Note: When you change the setting of a parameter, the instrument records the result as soon as you move to another parameter, or exit from the Calibration Set mode. Changing Option Settings When you display an option that can be changed, the entire option flashes on the display, such as the choices of ODD, EVEN or NONE for the communications parity bit checking. Press or to change the option. You can “scroll” through the options in either direction to make a selection as shown below. Changing Numeric Settings The display flashes the digit that can be changed. Press to select the digit that you wish to change. Press or to increase or decrease the value of the selected digit. Changing the Decimal Point To change the position of the decimal point, press to move the flashing selection until the decimal point flashes. Press or to move the decimal point to the right or left as required. Units of Measurement The calibration of some parameters is based on the units that are defined for the relevant variables. These units of measurement can been viewed in the UNITS menu in the Instrument Settings section below. ODD EVEN NONE ODD NONE EVEN 6789.123

39 Program Backup & Reports Backup via 500 Series Program Manager As well as programming the 500 Series instruments via the front panel (according to program access levels), the 500 Series Program Manager (500- PM) can be used to create a custom version of the application software and program parameters preset prior to downloading the application software. Backups of customised applications can be saved as download-able APX or APL files and the full configuration reports printed or saved as PDF. The 500- PM is a Windows based programming tool and resource centre and is freely available from the Contrec www.contrec.co.uk website. Instruments are often supplied from the factory with the default application software, but it is by using 500-PM software that program access levels are set, USER text and messages customised and print headers and footers entered. Printing Configuration Report To assist in keeping an audit trail of the program settings and changes made via the front panel, the 515 instrument provides the ability to print the configuration to a local printer if one has been connected and assigned to one of the 515 communication ports. The prompt to hold the Reset key to print the configuration report HOLD.RST CONFIG PRINT is found at the end of the Model Info menu, described in Model Information on page 33. The report can be lengthy and adequate printer paper must be available (Note: This feature is available starting from version 3.0.377). Upload and Clone of Application Software To assist in maintaining a backup for important applications and installations, the 500-Series Program Utility software (500-LT, version 3.0.377 or higher) can be used to upload the instruments application software with all of the current program settings. The 500-LT (PM Lite) program is a Windows based computer program which can be downloaded for free from the Contrec www.contrec.co.uk website and is part of the package when the Contrec 500 Series Program Manager is installed. The 500-LT provides the option to ‘Upload Application’ or ‘Upload Report Only’. To use either upload functionality, the 515 port being used must have printer (PRN) protocol assigned to it. Once uploaded to the 500-LT, the report can be viewed or printed. The Upload Application is automatically saved as an APL file. The file can be used then or reopened later to download to another 515 instrument (of the same or higher class) to create a clone of the original instrument.

Calibration Menu Tree Figure 17 and Figure 18 show the keys for moving around the calibration menu tree in Calibration View or Set mode. Figure 17 Calibration Menu Tree Sheet 1 FINP1 QUAD INPUT FREQn FACTn V-FLOW SIGNAL DBNCE CUTOFF FILTER CORR NO-PTS FREQ01 FACT01 PULSE NPS COIL KFACT LINEAR NON-LIN TEMP TYPE PT-MIN PT-MAX PT-DEF AINP1 PT100(E)/500 4-20 0-5 /1-5V DEFAULT AINP2 PRESS TYPE PRESS PT-MIN PT-MAX PT-DEF ABSOL GAUGE 4-20 0-5 /1-5V DEFAULT EXCEPT DEFLT PARAMS ATM-PR T-REF P-REF HEAT-V REF-T ARGON ARGON ARGON METHAN COMP Press Press SET Continued on next page ALRM1/2 TYPE POINT HYST selection ALRM3/4 selection TYPE POINT HYST ALARMS INPUTS 4-20 mA PULSE selection OUT2 PULSE PT-MAX PT-MIN WIDTH 4-20 mA PULSE OUTPUT OUT1 selection PT-MIN PT-MAX WIDTH PULSE UNITS View/Edit units of measurement

41 Figure 18 Calibration Menu Tree Sheet 2 FINP1/2 AINP1/4 LINP1/4 SUPPLY OUT2 PROCESS OPEN CLOSED OUT1 PROCESS ON / HI OFF / LO REL/ALRM RTU ADDR ASCII ADDR FLASH PORT COM-2 / RS485 PROTOC BAUD PARITY S-BITS BAUD PARITY S-BITS COMMS TM/LOG SETUP Press Press From previous page Hold at any point to return to the main calibration menu. Press at any I/O assignment position to move to the next I/O assignment in the submenu (eg pressing on ALRM1 will move you to ALRM2 if it exists) DISPLAY SET DATE FORM CLOCK YEAR CLOCK M-DAY CLOCK H-MIN HOUR LOGS DAY LOGS WEEK LOGS MONTH LOGS YEAR LOGS RESET LOGS REPORT TYPE PRN TYPE PRINT ACCUM DEFAULT TOTAL SUPPLY VOLT T-OUT MODE T-OUT SEC RESET MODE RESET ACCUM DISPL TAGS BACK-L T-OUT RATES DP TOTALS DP COM-1 / RS232 PROTOC END Exit from calibration mode TEST The shaded boxes indicate hardware options RTU DATA

Instrument Settings Units of Measurement The Units menu allows the units to be viewed and edited, if accessibility has previously been selected/enabled, without the reloading of new application software. Any change in units will result in a full reset to initially downloaded settings. Therefore, any required changes to units of measurement should be made before changing any other settings. Parameters  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END ITEM n unit The units for main menu or calibration items can be viewed by pressing the key. The units of measurement are password protected or will be protected by the CAL switch if any instrument setting has an access level of ‘CAL Switch Protected’. To edit the units the correct password must be entered or CAL switch used on entry to EDIT mode. Press or to select the required units. ACCEPT UNITS The Accept Units prompt will only appear if one or more of the units have been changed. IMPORTANT: Accepting the change of units will initiate a master reset. All calibration parameters will revert to their default value (i.e. those values included in the downloaded instrument software). All totals and any logged information will be cleared. Press or to select YES, then press the key. The instrument makes three beeps to confirm the reset command. The message -RESET- PLEASE WAIT will be displayed as the instrument exits calibration mode and completes a full re-boot sequence. SET SET SET  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END ATM-PR unit If the pressure sensor is configured as a Gauge type sensor, the instrument adds the atmospheric pressure to the measured pressure to determine the absolute pressure. Set the atmospheric pressure (absolute) according to the height above sea level. T-REF unit Enter the reference temperature for the calculation of corrected natural gas volume flow. SET

43 P-REF unit Enter the reference pressure (absolute) for the calculation of the corrected natural gas volume flow. HEAT-V REF-T Select the combustion reference temperature for the calculation of the natural gas heating value. Press or to select 0°C, 15°C, 20°C, 25°C, 60°F or 77°F. Modbus Accessible Parameters The following PARAMS menu items are also accessible via Modbus communications. For Modbus register listing, refer to Instrument Configuration Parameters on page 78. Note: The instrument uses the compressibility factors for natural gas according to AGA-8. Refer to the American Gas Association (AGA) Report No. 8 for the applicability to ranges of gas composition, temperature and pressure. Enter the following values as 00.000% to 99.999%. METHAN MOLE% Enter the mole percent of Methane. NITROG MOLE% Enter the mole percent of Nitrogen. C-DIOX MOLE% Enter the mole percent of Carbon Dioxide. ETHANE MOLE% Enter the mole percent of Ethane. PROPAN MOLE% Enter the mole percent of Propane. WATER MOLE% Enter the mole percent of Water. H-SULP MOLE% Enter the mole percent of Hydrogen Sulphide. HYDROG MOLE% Enter the mole percent of Hydrogen. C-MONO MOLE% Enter the mole percent of Carbon Monoxide. OXYGEN MOLE% Enter the mole percent of Oxygen. I-BUTN MOLE% Enter the mole percent of i-Butane. N-BUTN MOLE% Enter the mole percent of n-Butane. I-PENT MOLE% Enter the mole percent of i-Pentane. PENTAN MOLE% Enter the mole percent of n-Pentane. HEXANE MOLE% Enter the mole percent of n-Hexane. HEPTAN MOLE% Enter the mole percent of n-Heptane.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET

Inputs OCTANE MOLE% Enter the mole percent of n-Octane. NONANE MOLE% Enter the mole percent of n-Nonane. DECANE MOLE% Enter the mole percent of n-Decane. HELIUM MOLE% Enter the mole percent of Helium. ARGON MOLE% Enter the mole percent of Argon.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END Frequency Input 1 QUAD INPUT The quadrature input provides Level B pulse security to ISO 6551 standard and can be used in custody transfer applications. If the quadrature input is enabled, the additional flowmeter output should be connected to frequency input 2. Press or to select ENABLE or DISABLE. INPUT FLOW FINP1 For this application, Frequency Input 1 is assigned to flowrate. SIGNAL FINP1 Frequency input 1 signal type. Press or to select COIL, NPS or PULSE. DBNCE FINP1 Switches and relays have metal contacts to make and break circuits. The contact bounce introduces random signals into the circuit. The instrument has a debounce circuit to eliminate this problem. Note: When the debounce circuit is enabled, the maximum input frequency for large amplitude signals is limited to approximately 500 Hz. For low amplitude signals, the maximum frequency can be approximately 200 Hz. Press or to select ENABLE or DISABLE. SET

45 CUTOFF FINP1 The Cut-off is the lowest frequency for which the instrument continues to calculate a rate from the flowmeter. The value for the cut-off is specified as the frequency of the flowmeter in Hertz. Be careful when setting low cut-off values because the display update time for the flow rate becomes very long. For example if the cut-off is set to 0.01 Hz, and the measured flow stops, the instrument continues to display the flow rate for 100 seconds before it can determine that the flow has actually stopped. FILTER FINP1 Input fluctuations caused by pulsating flow tend to create distortion in the input readings of the rate. The instrument has a digital filter that averages out these fluctuations. As a guide to the degree of filtering to use, the following table shows the response time (in seconds) to reach 90% and 99% of a step change in input. The value A is the filter constant that the user can set. Filter setting A Seconds to reach 90% of full swing Seconds to reach 99% of full swing 0 0 0 2 2 4 4 4 8 6 5 10 10 8 15 15 12 23 20 14 27 25 18 34 35 25 48 45 32 62 60 42 82 75 52 102 90 62 122 99 68 134 The input filter range is from 0 to 99. A setting of 0 (zero) means that there is no filtering. CORR FINP1 If the input sensor has non-linear characteristics, select NON-LINEAR to apply correction factors to the input signal. Use or to select LINEAR or NON-LINEAR.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET

KFACT1 unit This parameter is available for viewing and editing only when the correction type is set to Linear. The K-factor of the flowmeter is the number of pulses from the flowmeter per unit of volume. The K-factor cannot be 0 (zero). NO-PTS FINP1 This parameter is available for viewing and editing only when the correction type is set to Non-linear. Enter the number of non-linearity correction points. Press or to select a number between 1 and 10 for the number of correction points. FREQ01 FINP1 to FREQn This parameter is available for viewing and editing only when the correction type is set to Non-linear. Enter the frequency for this correction point. The instrument uses linear interpolation between the correction points except that the correction factor for FREQ01 is used from 0 Hz up to FREQ01. Similarly, the instrument maintains the correction factor for the highest frequency setting up to the maximum input frequency. The following diagram shows the scaling factors at different frequencies for a hypothetical flowmeter. The heavy black line represents the actual scaling factor of the flowmeter. The light black line is the approximation that the instrument uses. Enter the lowest correction factor frequency as FREQ01 and proceed up to the highest frequency. You can hold the key to skip the non-linear points and go to the next item.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET Scaling Factor Frequency FREQ01 FREQ05 FREQ02 FREQ04 FREQ03 FACT01 FACT02 FACT03 FACT04 FACT05 DISPLAY

47 FACT01 FINP1 to FACTn This parameter is available for viewing and editing only when the correction type is set to Non-linear. Enter the scaling factor for this correction point in the same units of measure as the single K-factor above. The correction factor cannot be 0 (zero). Analog Input 1 INPUT TEMP AINP1 For this application, Analog Input Channel 1 is assigned to Temperature. TYPE AINP1 Select the type of analog input source. Press or to select 0-5 V, 1-5V, 4-20 mA, PT100, PT100-E, PT500 or DEFAULT. Note: PT100-E allows for extended temperature range (-200 to 800°C). PT-DEF AINP1 The Default Point is a fixed value that the instrument uses when the Input Type is set to DEFAULT or Default Value On Exception has been chosen. You can use the Default value instead of a sensor signal for testing purposes, or if the sensor is faulty. You can set the Default value during instrument commissioning so that it is available immediately if you select the Default input type at a later date. Enter the value in the engineering units of assigned variable. PT-MIN AINP1 PT-MAX The Minimum Point and Maximum Point parameters are only for 0-5 V, 1-5V and 4-20 mA inputs. Enter the value of the measured parameter that corresponds to the minimum input signal level. The minimum point is commonly referred to as the base value. Enter the value of the measured parameter that corresponds to the maximum input signal level. The maximum point is the same as the base value (set at the minimum point) plus the span value. For example, if the source signal is 4 mA for a temperature of 10°C, enter 10 for the minimum point. If the source signal is 20 mA for a temperature of 2000°C, enter 2000 as the maximum point.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET

Analog Input 2 INPUT PRESS AINP2 For this application, Analog Input Channel 2 is assigned to Pressure. PRESS AINP2 Select the type of analog pressure sensor. For a gauge type sensor, the instrument adds the atmospheric pressure as defined in the Parameters menu. The pressure will be displayed as absolute or gauge, whichever is selected and indicated with an ‘A’ or ‘G’ at the end of the pressure units. However the pressure value when logged or read via serial communications will always be absolute. Press or to select ABSOL or GAUGE. TYPE AINP2 Select the type of analog input source. Press or to select 0-5 V, 1-5V, 4-20 mA or DEFAULT. PT-DEF AINP2 The Default Point is a fixed value that the instrument uses when the Input Type is set to DEFAULT or Default Value On Exception has been chosen. You can use the Default value instead of a sensor signal for testing purposes, or if the sensor is faulty. You can set the Default value during instrument commissioning so that it is available immediately if you select the Default input type at a later date. Enter the value in the engineering units of assigned variable.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET

49 Outputs PT-MIN AINP2 PT-MAX The Minimum Point and Maximum Point parameters are only for 0-5 V, 1-5V and 4-20 mA inputs. Enter the value of the measured parameter that corresponds to the minimum input signal level. The minimum point is commonly referred to as the base value. Enter the value of the measured parameter that corresponds to the maximum input signal level. The maximum point is the same as the base value (set at the minimum point) plus the span value. For example, if the source signal is 4 mA for a pressure of 1.00 megaPascals, enter 1.00 as the minimum point. If the source signal is 20 mA for a pressure of 5.00 megaPascals, enter 5.00 as the maximum point. EXCEPT DEFLT If Default Value On Exception is enabled, the instrument will use the default value for the analog input that raised the exception. This will allow calculations to continue, however the exception message will continue to be displayed until the error is rectified or the input type is set to DEFAULT in calibration set mode. Press or to select ENABLE or DISABLE.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END PULSE OUTn or 4-20 You can assign any of the “main menu” variables to an output. The nature of the output depends on the assigned variable. Totals are output as pulses and rates are output as 4-20 mA passive signals. Press or to select the variable that is required as an output. The top of the display shows the type of output signal that is assigned to the variable. CAUTION Due to the dual-purpose nature of the outputs, take care not to set the output as an open collector pulse type signal when connected to a 4-20 mA loop circuit. SET

WIDTH OUTn The Output Pulse Width is available for viewing and editing only when the assigned variable is a total (pulse output) type. Pulse output is usually used to drive remote counters. Set the pulse width (in milliseconds) as required by the remote counter. Press or to set to: 10, 20, 50, 100, 200 or 500 ms. PULSE OUTn The Output Pulse Factor is available for viewing and editing only when the assigned variable is a total (pulse output) type. The Output Pulse Factor is the scaling factor for the retransmission of the measured total quantity. For example, if “volume” is chosen as an output variable and engineering unit is cubic metres, then a pulse factor of 1.000 generates one pulse for 1 m3. Similarly, a pulse factor of 3.000 generates one pulse for 3 m3. For more information, see Output Pulse Factor on page 51. The output pulse factor cannot be 0 (zero). PT-MIN OUTn PT-MAX OUTn The Output Minimum Point and Maximum Point are available for viewing and editing only when the assigned variable is a rate (4-20 mA output) type. The output minimum value corresponds to the 4 mA point and the output maximum value corresponds to the 20 mA point. Setting the output range differently from the input range enables the instrument to amplify the input signal. You can drive a chart recorder that “zooms in” on a specified range of values instead of displaying the full operating range of the transducer. For example, if “volume flow” is chosen as an output variable and engineering unit is cubic metres per minute, then setting the minimum point to 30 and the maximum point to 100 would reflect the volumetric flow rate range of 30 to 100 m3/min. At rates above the maximum and below the minimum points, the output remains at 20 mA and 4 mA respectively.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET

51 Output Pulse Factor Increasing the output pulse width reduces the maximum frequency at which a total variable can be retransmitted. Pulses will be missed if the output cannot “keep up” with the rate of total counts. You can use the output pulse factor to ensure that this maximum is not reached. The maximum pulse output frequency is determined by: The minimum pulse factor required is determined by: For example: To calculate the required pulse factor to avoid losing counts in retransmission if a total counts at a maximum rate of 75 units/sec (Hz) and the required pulse width of a remote counter is at least 50 ms: The maximum pulse output frequency is: The minimum pulse factor for that frequency is: Alarms The alarm relay(s) can be assigned to rate variables such as flowrate, or set as an equipment failure alarm. The alarm switches “on” whenever an alarm condition exists. The alarm switches “off” when the alarm condition no longer exists. However, you may need to configure external alarm devices that require acknowledgement for cancelling an alarm. Equipment Failure Alarm Any alarm relay can be assigned as an equipment failure alarm. This alarm setting can have normally closed (open) contacts that open (close) when the instrument displays any error message as listed in Error Messages on page 61. 1000 2  pulse width in ms   --------------------------------------------------------Hz max rate of total max pulse output frequency ------------------------------------------------------------------ 1000 2  50 --------------- 10Hz = 75 10 ------ = 7.5

 UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END RELAY ALRMn Select a rate variable to assign to the alarm relay. Note: If the alarm type is set to “equipment alarm”, this relay assignment setting is ignored. Press or to select the variable that is required as an alarm. TYPE ALRMn The options available for alarm types are as follows: • HI-NO — High Alarm, Normally Open contacts • HI-NC — High Alarm, Normally Closed contacts • LO-NO — Low Alarm, Normally Open contacts • LO-NC — Low Alarm, Normally Closed contacts • BD-NO — Band Alarm, Normally Open contacts • BD-NC — Band Alarm, Normally Closed contacts • AL-NO — Equipment Alarm, Normally Open contacts • AL-NC — Equipment Alarm, Normally Closed contacts Press or to select the type of alarm required. POINT ALRMn The Alarm Setpoint is available for viewing and editing for any alarm type except ‘equipment alarms’. The Alarm Setpoint is the value (in engineering units of assigned variable) at which the alarm condition occurs and therefore the alarm is on. Each alarm is completely independent, e.g. a High alarm does NOT need to have a higher setpoint than the a Low alarm. SET

53 HYST ALRMn The Alarm Hysteresis is available for viewing and editing for any alarm type except ‘equipment alarms’. Alarm hysteresis loops occur when the alarm toggles continuously on and off when the process variable is close to the setpoint. For a high alarm, the alarm activates when the value of the variable rises above the alarm setpoint and deactivates when the value falls below the alarm setpoint minus the amount of the hysteresis setting (if any). For a low alarm, the alarm activates when the value of the variable falls below the alarm setpoint and deactivates when the value rises above the alarm setpoint plus the amount of the hysteresis setting (if any). For a band alarm, the alarm activates whenever the value of the variable is outside the setpoint plus or minus the amount of the hysteresis. For example, with a high alarm setpoint of 200, and a hysteresis setting of zero, a value oscillating between 197 and 202 will cause the alarm to toggle on at 200 and toggle off below 200. However, if the hysteresis is set to 5, the value of the variable must fall below 195 to cancel the alarm. The alarm will reactivate only when the value again rises above 200.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET

Communications The instrument has the following communication ports: • COM-1 RS-232 Port - A 9-pin female connector on the rear panel of the instrument. • COM-2 RS-485 or Ethernet Port (optional) - Terminals or socket on the rear panel. Ethernet connection requires COM-2 setting to be: RTU (Modbus), 19200 Baud rate, even parity and 1 stop bit. • COM-3 Port - A special communications port that is only applicable to some applications.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END PROTOC COM-n The Communications Protocols can be assigned to the communication ports as follows (a protocol cannot be assigned to more than one port at a time): • ASCII - Simple ASCII • RTU - Modbus RTU • PRN - Printer Protocol • NONE - If a port is not being used, set the protocol to NONE. Printer Protocol (PRN) is only available if the option with Real Time Clock is installed. For the selected port, press or to select the desired protocol. BAUD COM-n The Baud setting is the speed of the communication port in data bits per second. The baud rate of the instrument must match the baud rate of the communication device that the instrument is connected to. Use or to select 2400, 4800, 9600 or 19200 baud. PARITY COM-n The Parity bit helps to detect data corruption that might occur during transmission. The parity bit setting of the instrument must match the parity bit setting of the communication device that the instrument is connected to. Press or to select EVEN, ODD, or NONE. S-BITS COM-n The Stop bit indicates the end of a transmission. Stop bits can be 1 or 2 bit periods in length. The stop bit setting of the instrument must match the stop bit setting of the communication device that the instrument is connected to. Press or to select 1 or 2 stop bits. SET

55 Time Settings and Data Logging Instrument Clock Note: The real-time clock is part of the advanced option package. The instrument has a real-time clock for recording logged events. The clock displays the time and the date. The date format can be set to European format (day/month/year) or American format (month/day/year). The time clock uses the 24-hour format. The clock will continue to operate for up to 5 years (typically) on the internal battery if there is no power connected to the instrument. Therefore, after an interruption to the power supply, the instrument recommences normal operation although there will be no data recorded during the period without a power supply. RTU DATA The Modbus RTU data format for the 2-register (4-byte) values can be set as either floating point or long integer values. Use or to select FLOAT or INTEGER. RTU ADDR The Modbus RTU protocol address must be in the range of 1 to 247. When multiple instruments (slaves) are connected to one communication device (master), each assigned address must be unique. Note: The master device uses the RTU address 0 (zero) for broadcasting to all connected slave units. ASCII ADDR The ASCII protocol address identifies each communicating device. The address must be in the range of 1 to 255. When multiple instruments (slaves) are connected to one computer (master), each assigned address must be unique. FLASH PORT The Flash Driver Port assignment defines the communication port for downloading software into the instrument. The default setting of this assignment is the RS-232 port. The Ethernet port, if fitted, can not be used as the Flash port. Press or to select RS-232 (COM-1), RS-485 (COM-2) or NONE.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET

Note: If there is an interruption to the power supply and the battery has failed, the instrument displays an error message when the power supply is restored. In this case, you should set the current time and date so that the instrument continues to log data at the correct times. Data Logging The instrument will log the main-menu variables if real-time clock option is installed. The logs are at fixed intervals of hours, days, weeks, months and years. The instrument can store a total of 1530 log entries which are distributed over the log intervals as follows: • 800 hourly logs • 400 daily logs • 200 weekly logs • 100 monthly logs • 30 yearly logs If the number of log entries exceeds the programmed number for a particular time interval, the oldest log entry is overwritten by the newest one for that time interval. Also note that the totals are saved as accumulated totals. The log parameters (below) also determine the number of records to be included in a report printout if the printing option is used.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END DATE FORM Clock Date Format The European date format is: dd/mm/yyyy or (Day-Month). The American date format is: mm/dd/yyyy or (Month-Day). Press or to select DAY-M or M-DAY CLOCK YEAR The Clock Year defines the current year for the real-time clock. CLOCK M-DAY The Clock M-DAY setting defines the current month and date for the real-time clock. This parameter is programmed in Month-Day format for both European and American date formats. CLOCK H-MIN The Clock H-MIN setting is the current time in hours and minutes for the real-time clock. HOUR LOGS Set the number of Hourly Logs to appear on the printed log report. The hourly log entry occurs at 00 minutes each hour. SET

57 DAY LOGS Set the number of Daily Logs to appear on the printed log report. The daily log entry occurs at 00 hours and 00 minutes each day. WEEK LOGS Set the number of Weekly Logs to appear on the printed log report. The weekly log entry occurs at 00 hours and 00 minutes each Monday. MONTH LOGS Set the number of Monthly Logs to appear on the printed log report. The monthly log entry occurs at 00 hours and 00 minutes on the first day of the month. YEAR LOGS Set the number of Yearly Logs to appear on the printed log report. The yearly log entry occurs at 00 hours and 00 minutes on the first day of the year. RESET LOGS Reset the logged data. You may need to reset (clear) the logged data if you change the time/log settings. Press or to select YES, then press the key. The instrument makes three beeps to confirm the reset command. REPORT TYPE The Printer Protocol Report Type determines the nature of the printout from the REPORT PRINT - HOLD.SET prompt in the main menu. The following report types available in this instrument are: • REP-01 Hourly Logs Report • REP-02 Daily Logs Report • REP-03 Weekly Logs Report • REP-04 Monthly Logs Report • REP-05 Yearly Logs Report • REP-06 Previous Day’s 24 Hour Report (0Hr – 23Hr, minimum 48 hourly logs required) Press or to select Report Type.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET SET

General Setup Parameters PRN TYPE The Printer Protocol Printer Type allows the nature of the printer being used to be specified. The following printer types available in this instrument are: • PRN-01 Generic computer printer • PRN-02 Generic roll printer (prints first line first) • PRN-03 Slip printer TM295 • PRN-04 Label (roll) printer - Citizen CMP30L Press or to select Printer Type. PRINT ACCUM Select whether the accumulated totals are printed in addition to the non- accumulated totals for printer protocol.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END DEFAULT TOTAL The instrument displays the default Total when the user presses the key. If the display timeout is enabled, the instrument displays the default Total when there is no user action for the period of the display timeout period. Press or to select the default total display. SUPPLY VOLT The instrument provides a power-limited supply for external transducers. Press or to set the transducer supply voltage between 8 and 24 volts DC as required. T-OUT MODE If the Display Timeout mode is enabled, and there is no user activity for the defined timeout period, the display panel returns to the default display. This function is useful for the following reasons: • to return the display to a preferred variable after the user has finished reading other information, • to cancel the calibration mode and return to the default display if the user does not exit from the calibration mode for any reason. Press or to select the display timeout function as follows: • DISABLE - Timeout is completely disabled. • EN DISP - Timeout is enabled during Normal mode and Calibration View mode. • EN EDIT - Timeout is enabled during Calibration Set mode. • EN ALL - Timeout is enabled for all modes. SET TOTAL

59 T-OUT SEC The Display Timeout period defines the delay for the Display Timeout mode if it is enabled. The display timeout period can be from 5 to 99 seconds. RESET MODE The Totals Reset mode can be configured to reset the non-accumulated totals to zero. Press or to select the reset mode as follows: • NONE - The user cannot reset the non-accumulated totals. • INSTANT - When the user presses the key, the instrument resets all non-accumulated totals. • DELAYED - When the user presses the key and holds it for two seconds, the instrument resets all non-accumulated totals. RESET ACCUM The Reset Accumulated Totals function clears all of the accumulated totals and the non-accumulated totals. Press or to select YES, then press the key. The instrument makes three beeps to confirm the reset command. DISPL TAGS The Display Tags option determines whether the instrument displays the default display tags or the user-defined tags. The display tag setting also defines whether the instrument displays the default error and warning messages, or the user-defined messages. Note: The user-defined tags can be entered into the instrument only by the manufacturer or the distributor. Press or to select the Display Tags option as follows: • DEFAULT - the instrument displays the default (English) tags • USER - the instrument displays the user-defined tags. BACK-L T-OUT If the backlight timeout is enabled, and there is no user activity (any keys pressed) for a period of 10 seconds, the display backlight switches off to save power. The backlight switches on when a key is pressed. Select the backlight timeout mode as required. Press or to select ENABLE or DISABLE. RATES DP This parameter sets the maximum number of decimal places for displaying or printing main menu rates. TOTALS DP This parameter sets the maximum number of decimal places for displaying or printing main menu totals.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END SET RESET RESET SET

Test Menu The Test menu enables you to view the inputs and outputs to and from the instrument. In Calibration Set mode, (by entering the system password) you can control the outputs and the alarms as described in the table below.  UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM/LOG SETUP TEST END FINPn Hz The frequency of the input to FINPn is displayed in Hertz. AINPn units The units are displayed according to the calibration setup for the analog input. If unused or set to Default the input is 4-20mA and displayed in mA. LINPn STATE You can view the state of the logic inputs. If the input is an open contact or inactive it will display HI. If the input is a closed contact or active it will display LO. OUTn STATE You can control the state of the outputs. Press the or keys to set the output state as follows: • PROCESS - the output depends on the current values of the inputs and the calculations that the instrument performs. For a pulse output, such as a total, the output produces a pulse train as follows: • ON - a pulse train with a pulse width as set in the Outputs menu. • OFF - no output. For a 4-20 mA output, such as a rate, the output is as follows: • HI - the output is set to 20 mA. • LO - the output is set to 4 mA. ALRMn STATE or REL-n You can control the state of the relays (alarms). Press the or keys to set the selected relay as follows: • PROCESS - the relay operates according to the current values of the inputs and the relay settings as programmed. • OPEN - the relay output contacts are set to “open”. • CLOSED - the relay output contacts are set to “closed”. SUPPLY V You can display the actual DC output supply voltage, which may help with troubleshooting. If the actual supply voltage is lower than the preset value (refer to General Setup Parameters on page 58) it may indicate that the output is overloaded. SET

61 System Messages The instrument displays messages for defined events and fault conditions. The manufacturer or distributor can enter user-defined text for the messages. This user-defined text is displayed, instead of the default (English) messages, when the Display Tags option in the Setup menu is set to USER. Error Messages Failure of Analog Input Sensor If there is a failure of an analog input sensor for a process parameter such as temperature or pressure etc, the instrument sets the value of that parameter to 0 and displays the relevant error message. The input sensor and connections need to be inspected and may require replacement. The instrument also sets the results of calculations that depend on the failed input(s) to 0. For example, if the temperature sensor fails, the instrument displays a temperature reading of 0 and the calculated energy flow as 0. Default Value on Exception If Default Value On Exception has been enabled in the INPUTS section of calibration, the default value will automatically be used so that all calculations can continue. The error message will still continue to scroll across the display until the fault is corrected at which point the calculations will revert to using the live input. Override Error Condition While a fault is being rectified on an analog input for a process parameter, an operator with calibration access can set the Analog Input Signal Type to DEFAULT and the Analog Input Default Point to a typical process value. If there are no other faults, the instrument continues to operate by using the default value.

The system displays error messages as described in the following table: Error Messages Status Code Description CPU Card Failure 20 There are failed components on the CPU card and technical support is required. Power Supply is Low 21 The input and/or output power supply voltage is too low, ensure that: (a) input power supply voltage is within the specified range (b) output power supply is not overloaded. New/Failed Battery - Set Time 22 The real-time clock has lost the correct time because the battery has failed, or there is a new battery. Set the current time and date (in the TM/LOG menu) to clear the error message and to continue data logging at the correct times. Note: The instrument can continue operating with a failed battery, but the correct time will be lost if there are interruptions to the power supply. Temperature Sensor Failure 01 The temperature sensor (analog input 1) has failed. To deactivate the error, the Analog Input Signal Type can be set to DEFAULT to use a programmed default value instead of the sensor signal. Pressure Sensor Failure 02 The pressure sensor (analog input 2) has failed. To deactivate the error, the Analog Input Signal Type can be set to DEFAULT to use a programmed default value instead of the sensor signal. Invalid Reference Parameter 06 The reference parameter is outside of the allowed range. Reference temperature and pressure (specified in the Parameters menu) should be within the AGA-8 limits. Temp/Pressure is Out of Range 10 The temperature and/or pressure inputs are outside of the allowed calculation range. Quad Input Error Detected 12 Pulse security checking has detected a quadrature input error. Pressing the RESET key will clear the exception if the error condition no longer exists. The exception is only raised if the quadrature input has been enabled. Quad Frequency Over Limit 11 The quadrature input frequency is over the limit (no pulse security checking is performed). The exception is only raised if the quadrature input has been enabled.

63 Warning Messages The system displays warning messages as described in the following table: Warning Messages Description Value Has Been Set to Default You have entered an invalid value for a parameter. Therefore, the instrument has set the default value. Over Total Limit - Maximum Set You have exceeded the maximum number of logging entries for the combined time bases. The instrument has set the current log setting to the remaining maximum number. Already Assigned to Other Port You have tried to assign a particular protocol type to more than one serial communication port. The instrument has set the protocol to NONE.

65 Chapter 6 Communications Overview This chapter describes the communications between the instrument and another communicating device such as a computer or a printer. You should have relevant information about the devices to which the instrument will be connected. Some connection examples are included in this manual, however, the operation and connection of other devices is outside the scope of this manual. Hardware Interconnection The instrument has two communication ports: • COM-1 RS-232 port on the rear panel (DB9 female connector) • COM-2 RS-485 port on the rear panel (optional) or Ethernet (optional) The appropriate interface and protocols are selected during calibration. COM-1 RS-232 Port The COM-1 RS-232 port provides communication between the instrument and one other device such as a host computer or a printer. Note: A printer must have a serial port to be able to be directly connected to the flow computer. It is not possible to communicate directly with a printer via a parallel port. Computers use either a DB9 or a DB25 connector, and the connections to each type are shown in Figure 19. Figure 19 RS-232 Cable Connections to a Computer Instrument 2 3 5 7 8 TxD RxD GND CTS RTS DB9 Computer/Printer 3 2 7 4 5 RxD TxD GND RTS CTS DB25 2 3 5 7 8 DB9 Common Optional Optional 515 GN01 - 30 August 2021

Note: The instrument requires a cable with straight-through connections. Do not use a null modem cable for RS-232 connection to a computer. COM-2 RS-485 Port Option The COM-2 RS-485 port enables communication with multiple devices. Each device has a unique address so that the “master” device can communicate with specific “slave” devices. On RS-485 links, an external terminating resistor must be connected at the furthest end of the cable. When multiple instruments are connected, they should be “daisy chained” in a multidrop configuration as shown in Figure 20. Up to 32 units can be connected to the interface at a maximum distance of 1200 metres. Figure 20 RS-485 Connections COM-2 Ethernet Port Option An Ethernet module is an available option, in place of the RS-485 port, if Modbus TCP/IP connection is required. In the programming communication settings, COM-2 should be set to RTU (Modbus), 19200 Baud rate, even parity and 1 stop bit. For further advice and example of Ethernet port usage and setup, refer to Ethernet Port & Setup on page 90 in the Appendix. Twisted Pair Load 120 ohms Gnd Gnd Host Computer Comms Gnd + - + - + - Instrument Instrument 19 20 21 19 20 21

67 Protocols The communications protocols can be assigned to the communication ports on the instrument as follows: • ASCII - Simple ASCII • RTU - Modbus RTU • PRN - Printer Protocol • NONE - If a port is not being used, set the protocol to NONE. Note: The Printer Protocol is only available if the option with Real Time Clock is installed. Also a protocol cannot be assigned to more than one port at a time as described in Communications on page 54. • ASCII - In this ASCII protocol each command and response is a string of ASCII characters. This proprietary protocol is developed by Contrec to allow for simple information interchange. The main advantages of this mode are that it allows extended time intervals to occur between characters without causing a timeout error and that messages can be sent and monitored easily with a simple ASCII terminal. • Modbus RTU - Modbus RTU is an industry-standard protocol which allows the instrument to be easily connected to computers running supervisory software systems. The main advantage of this mode is that its greater character density allows better data throughput than ASCII mode, however each message must be transmitted in a continuous stream. • Printer - In the Printer protocol there is a selection of printer types. Please refer to the Printer Protocol on page 80 for full details. Simple ASCII Protocol This simple ASCII protocol requires that all requests are initiated with a colon ( : ) and terminated with a carriage return (C R). The message termination can include a linefeed before the carriage-return ( L F C R), but it is the carriage-return that acts as the message termination. All responses by the instrument are terminated with a linefeed and a carriage-return ( L F C R). Requests Format The format of a request to the instrument is as follows: :A001:LR001:XXX? L F C R Address Log Command Log type number Carriage-return Linefeed

Each request must include the address and command portions. The underlined section is an optional part of the request string. Address In multipoint communications, each instrument must have a unique address and it is essential in the request for identifying a particular instrument. However, it may be set to 000, for special broadcast commands. For single-instrument communications, the address can also be set to 000 in the request. Refer to Communications on page 54 for setting the instrument address. Note: The instrument always responds with its address in the header regardless of the type of request. Log Type and Number The log type and number enables a communicating device to retrieve data from the instrument. The data can be from timebased and/or event-based logs. Data can also be from the current process variables with the either accumulated or non-accumulated (resettable) totals. All logged records of the process variables contain the accumulated totals. The log request is optional. If the log request is not included, or the log number is set to 000, the instrument returns the current process variables. If the log request is included, the log number defines the specific log entry by counting backwards. The most recent log entry for a timebase is 001. The “last edit” log records the process variables at the time of the last exit from the calibration edit mode. There is only one “last edit” log, therefore, if a number is included in the request, the instrument ignores the number and returns the data at the time of the last edit. Likewise, there is only one set of current process variables with “non-accumulated totals”, therefore it also ignores any log number included in the request. The types of logs applicable to this instrument are as follows: Log Type LH - hourly log LD - daily log LW - weekly log LM - monthly log LY - yearly log LE - last edit log LN - current totals displayed as Non-accumulated

69 The number of the log entry is the same as shown on the front panel of the instrument. For example, a request for LH003 would return the data for the log entry two hours prior to the most recent hourly log entry. If the current time is between 9:00 am and 10:00 am, the most recent hourly log LH001 was recorded at 9:00. Therefore, LH002 is for 8:00 and LH003 is for 7:00. After 10:00 am in this example, LH003 becomes the 8:00 log. Instrument Responses The instrument response time to any enquiry is not more than 300 ms. The responses from the instrument are in the following format: HEADER L F C R DATA L F C R DATA L F C R . . . DATA L F C R L F C R The components of the response message are as follows: Header The format of the response header from the instrument is as follows: The instrument Exception Status codes that the instrument returns for the ASCII protocol are the same as those described for the Modbus RTU protocol in Instrument Exception Status on page 77. Data The format of the data variables from the instrument is as follows: Note: The decimal point in the Value is always at character position 8. Therefore whole numbers are aligned right at the decimal point, with trailing zeroes. 8 9 1 2 3 . 4 5 6 M W h E N E R G Y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 23 24 25 26 27 Value (aligned right) space Unit (aligned left) space Item (aligned left) A001 YYYY/MM/DD HH:MM:SS 00 Address Time Date space space space Exception Status (24-hour clock)

Variables Request The variables request asks the instrument to return the value of one or more requested variables. All totals are transmitted as accumulated totals. Variables Request and Response Example The following request is for the only instrument that is connected to the communication port to return the values of all main menu variables. The following is an example of a hypothetical instrument response. Refer to on page 3 for the list of variables that would be returned for this application. The following message to an instrument, requests the current values for the default rate and total: The instrument response would be similar to the following: Command Description :RVA? Return all variables :RVD? Return the default Total and Rate :RV0? … :RV9? Return the specific variable. The numbers relate to the position in the variables menu. For example, V0 is Energy, V1 is Power and so on. : A 0 0 1 : R V A ? L F C R A 0 0 1 2 0 0 2 / 0 3 / 1 4 1 8 : 2 5 : 0 0 0 0 L F C R 6 . 1 1 6 M W h E N E R G Y L F C R 1 6 . 5 7 3 M W P O W E R L F C R 1 3 2 0 . 5 3 0 m 3 V O L U M E L F C R 5 8 . 3 0 0 m 3 / M V - F L O W L F C R 7 6 2 7 . 1 1 7 K G M A S S L F C R 3 4 4 . 4 6 0 K G / M M - F L O W L F C R 2 3 0 . 0 0 0 D E G C T E M P L F C R 1 . 2 6 0 M P A P R E S S L F C R 0 . 1 7 4 m 3 / K G S P - V O L L F C R 2 8 8 6 . 7 6 0 K J / K G S P - E N T L F C R L F C R : A 0 0 1 : R V D ? L F C R A 0 0 1 2 0 0 2 / 0 3 / 1 4 1 8 : 2 5 : 0 0 0 0 L F C R 1 2 6 . 4 5 5 m 3 V O L U M E L F C R 2 0 . 4 3 7 m 3 / M V - F L O W L F C R L F C R

71 Log Request The log request asks the instrument how many logs it stores in the particular timebase. These are the values described in Time Settings and Data Logging on page 55. Log Response Example The following message asks the instrument with address 001 to return the number of logs that the instrument stores: The instrument response would be similar to the following: Clear Data Request The clear data request asks the instrument to clear the data in the selected registers. Clear Data Request Example The following message asks the instrument with address 001 to clear the logged data that the instrument stores: Command Description :RLH? Return the number of hourly logs :RLD? Return the number of daily logs :RLW? Return the number of weekly logs :RLM? Return the number of monthly logs :RLY? Return the number of yearly logs :RLR? Return the number of log records (non- timebased logging) : A 0 0 1 : R L R ? L F C R A 0 0 1 2 0 0 2 / 0 3 / 1 4 1 8 : 2 5 : 0 0 0 0 L F C R 2 4 L F C R L F C R Command Description :RCN? Clear the non-accumulated (resettable) totals :RCA? Clear the accumulated totals :RCL? Clear the logs except for the “last edited” log : A 0 0 1 : R C L ? L F C R

The instrument response would be similar to the following: Instrument Information Request The Instrument Information request asks the instrument to return the general information about the model and version codes. The instrument exception status is returned as a part of the header as it is with the header for all command responses. Instrument Information Response Example The following message asks the instrument with address 001 to return the general information about the instrument: The following is an example of a hypothetical instrument response: Corrupted or Invalid Requests If the instrument receives a corrupted or incomplete request, there is no response. The instrument discards any partial request and waits for the next enquiry. If the instrument receives a request message in the correct format, but for a non-existent option, it returns only the message header. For example, if the instrument received the following request variables message :A001:RVT? it will return only the header because there is no T option for the ‘Variables Request’ message. A 0 0 1 2 0 0 2 / 0 3 / 1 4 1 8 : 2 5 : 0 0 0 0 L F C R L F C R Command Description :RIG? Return the general information about the instrument such as Model number, Application number, Version and Serial numbers etc. These items are returned as a block in the same format as shown on the display in the “Model Info” menu. : A 0 0 1 : R I G ? L F C R A 0 0 1 2 0 0 2 / 0 3 / 1 4 1 8 : 2 5 : 0 0 0 0 L F C R 5 1 5 M O D E L - 1 1 - F - L F C R S C 0 1 I N P U T F - T P - - L F C R S C 0 1 V E R S 0 1 0 1 . 0 0 1 L F C R C U S T O M V E R S 0 0 0 0 0 1 L F C R U N I T S / N 1 2 3 4 5 6 L F C R L F C R 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

73 Modbus RTU Protocol Modbus RTU (remote terminal unit) is an industry standard protocol that allows the instrument to be easily interfaced to other communication devices. The instrument implements the Modbus protocol as detailed in the Modicon Modbus Protocol Reference Guide PI-MBUS-300 Rev J (June 1996). Message Format In RTU mode, messages start with a silent interval of at least 3.5 character times. The first field transmitted is the device address. Following the last transmitted character, a similar interval of at least 3.5 character times marks the end of the message. A new message can begin after this interval. The entire message frame must be transmitted as a continuous stream. A typical message frame is shown below: Except for broadcast messages, when a master device sends a query to a slave device, it expects a normal response. One of four possible events can occur from the master’s query: • If the slave device receives the query without a communication error, and can handle the query normally, it returns a normal response. • If the slave does not receive the query due to a communication error, no response is returned. The master program has to process a timeout condition for the query. • If the slave receives the query, but detects a communications error (parity or CRC), no response is returned. The master program has to process a timeout condition for the query. • If the slave receives the query without a communication error, but cannot handle it (for example, if the request is to read a nonexistent register), the slave will return an exception response informing the master of the nature of the error. Instrument Address The address of the instrument is programmable in the range from 1 to 247. Some addresses are reserved according to PI-MBUS-300 and have a special meaning: • 0 = Broadcast, no response required from slave devices • 248 to 255 Reserved Address Function Data CRC Check 1 byte 1 byte n bytes 2 bytes

Function Codes The instrument accepts the following function codes: Exception Response The instrument forms an exception response by adding 80H to the function code and using an exception code as the 1-byte data field in the returned frame. Implemented exception codes are as follows: Code Name Description 03 Read data register(s) Obtain the content of one or more 2-byte data registers. 06 Preset data register Preset one 2-byte data register. 07 Read status register Obtain the content of 1-byte status register. 16 Preset data register(s) Preset one or more 2-byte data registers. Code Name Description 01 Illegal function The function code is not a legal action for the slave. 02 Illegal data address The data address is not a legal address for the slave. 03 Illegal data value The data value is not a legal value for the slave. 05 Acknowledge The slave has accepted the request and is processing it, but a long duration of time will be required to do so. 06 Slave device busy The slave is engaged in processing a long duration program command. The master should re-transmit the message later when the slave is free.

75 List of Data Registers The following tables describe the addresses and meaning of the data registers in the instrument. The registers are grouped in blocks that relate to a particular function of the instrument. The data values are expressed in the engineering units that were selected for the variables when the instrument settings were configured. Note: Conventional numbering of registers often starts from 1, therefore be aware that “register 1” in this case has “address 0” and so on. The data registers represent different data types as specified in the tables: • I - Integer, 2 bytes (Holding Register) • L - Long Integer, 4 bytes (2 registers) • P - Programmable Format, 4 bytes (2 registers) The “Programmable Format” data type for 4-byte (2 registers) data values can be set as either Floating Point or Long Integer via the “Data Type” program item as described in Communications on page 54. The Floating Point variable is represented in IEEE-754 Floating Point 4-byte format and requires two 2-byte data registers: This means that two data registers must be read or written to obtain, or preset, one data value. IEEE-754 Modicon Registers 1st byte low byte (register X) 2nd byte high byte (register X) 3rd byte low byte (register X+1) 4th byte high byte (register X+1)

Current and Logged Process Data This block of registers is available for the retrieval of current or logged process data with its matching time and date information. Use the log type and log number to retrieve the logged information from the appropriate register. If a particular log number does not exist, or the instrument does not have the optional real-time clock, the time and date stamp and associated variables are set to zero. Register Name Comments Read Only or Read/Write Type 1 Volume Process Variables By default totals are the Accumulated values. If current Non-accumulated (resettable) totals are required, set register 37 to 06. All logged totals are the Accumulated values. R P 3 Volume Flowrate R P 5 Corrected Volume R P 7 Corrected Flowrate R P 9 Heat R P 11 Heat Flowrate R P 13 Mass R P 15 Mass Flowrate R P 17 Temperature R P 19 Pressure (absolute) R P 21 Compressibility Factor R P 23 R P 25 R P 27 R P 29 R P 31 Year Current Date/Time or Logged Date/Time Stamp (see register 38 Log Number). Only current Date/Time can be edited R/W I 32 Month R/W I 33 Date R/W I 34 Hour R/W I 35 Minute R/W I 36 Second R I 37 Log Type 00 - hourly or log records 01 - daily 02 - weekly 03 - monthly 04 - yearly 05 - last edit of calibration 06 - current totals are non-accumulated values, register 38 is ignored. R/W I 38 Log Number If set to 0, current variables and Date/Time are retrieved R/W I 39 Clear Data 01 - clear logs 02 - clear accumulated totals 03 - clear non-accumulated totals W I 40 Reserved

77 Instrument Exception Status This register is available to verify the status of the instrument. Instrument Control and I/O This block of registers is available in some applications to give access to monitor and/or control some of the instrument. Register Name Comments Read Only or Read/Write Type 41 Exception Status 00 = no error 01 = analog input 1 failure 02 = analog input 2 failure 03 = analog input 3 failure 04 = analog input 4 failure 05 = invalid calibration parameter 06 = invalid reference parameter 07 = invalid property 08 to 09 reserved 10 = process parameters out of range 11 = input is over limit 12 = flow error detected 20 = system failure 21 = power supply is low 22 = new or failed clock battery 23 to 29 reserved 30 = alarm 1 active 31 = alarm 2 active 32 = alarm 3 active 33 = alarm 4 active R I Register Name Comments Read Only or Read/Write Type 42 Reserved 43 Logic Inputs 0 to 15 Binary representation of logic inputs B0 = 0/1 (LSB) input 1 activated/deactivated B1 = 0/1 input 2 activated/deactivated B2 = 0/1 input 3 activated/deactivated B3 = 0/1 input 4 activated/deactivated R I 44 Operation Mode Representation of operation mode 0 = Idle/Local Idle state R I 45 Relay State 0 to 15 Binary representation of relay state. 0 = open; 1 = closed. B0 = relay 1 (LSB) B1 = relay 2 B2 = relay 3 B3 = relay 4 R I

Instrument Configuration Parameters This block of registers is available in applications to give access to some important instrument parameters (i.e. fluid properties etc). The usage of these parameters can be dependent on other instrument settings. For full description, please refer to the “Modbus Accessible Parameters” in Parameters on page 42. 46 Relay Control 0 to 15 Binary representation of relay control. 0 = open; 1 = close. B0 = relay 1 (LSB) B1 = relay 2 B2 = relay 3 B3 = relay 4 R/W I 47 Relay Control Source 0 to 15 Binary representation of relay control source. 0 = Local (controlled by instrument operation) 1 = RTU (controlled by Modbus register 46). B0 = relay 1 (LSB) B1 = relay 2 B2 = relay 3 B3 = relay 4 R/W I 48 Reserved R L 51 to 99 Instrument Parameters See next table for details. R/W P 101 Analog Inp.1 Raw analog input data. 4-20mA inputs are read in Amperes. 0-5V or 1-5V inputs are read in Volts RTD inputs are read in degrees Kelvin. Unused inputs are configured as 4-20mA. R P 103 Analog Inp.2 R P 105 Analog Inp.3 R P 107 Analog Inp.4 R P Register Name Comments Read Only or Read/Write Type Register Name Comments Read Only or Read/Write Type 51 Methane Mole % R/W P 53 Nitrogen Mole % R/W P 55 Carbon Dioxide Mole % R/W P 57 Ethane Mole % R/W P 59 Propane Mole % R/W P 61 Water Mole % R/W P 63 Hydrogen Sulphide Mole % R/W P 65 Hydrogen Mole % R/W P 67 Carbon Monoxide Mole % R/W P 69 Oxygen Mole % R/W P 71 i-Butane Mole % R/W P 73 n-Butane Mole % R/W P 75 i-Pentane Mole % R/W P 77 n-Pentane Mole % R/W P 79 n-Hexane Mole % R/W P 81 n-Heptane Mole % R/W P

79 83 n-Octane Mole % R/W P 85 n-Nonane Mole % R/W P 87 n-Decane Mole % R/W P 89 Helium Mole % R/W P 91 Argon Mole % R/W P 93to 99 Reserved R/W P Register Name Comments Read Only or Read/Write Type

Printer Protocol A printer protocol is available in the 500 Series. It provides the ability to print out live data, individual logged data and to do some report-style printing of logged data. The method of printing these and the format of the printouts is described below. Note: Printer output is only available if the Real Time Clock option is fitted. The selection of Printer Protocol can be made for the Communications Protocol options for the COM-1 RS232 or COM-2 RS485 port. A list of log report types and printer types available at the end of the TM-LOG calibration menu. Report Types The list of report types is as follows: • REP-01 Hourly Logs Report • REP-02 Daily Logs Report • REP-03 Weekly Logs Report • REP-04 Monthly Logs Report • REP-05 Yearly Logs Report • REP-06 Previous Day Hourly Logs (0Hr – 23Hr, minimum 48 hourly logs required) The number of logs printed in each report is determined by the values programmed in the TM-LOG menu. Printer Types The list of available printers is as follows: • PRN-01 Generic computer printer • PRN-02 Generic roll printer (printing first line first) • PRN-03 Slip Printer TM295 • PRN-04 Label (roll) printer - Citizen CMP30L Customizing a Printout A customized printout can be provided which can have up to 6 header lines and 6 footer lines. It is also possible to include or exclude each main menu item on the printout. If any customizing of the printout is required discuss this with the distributor.

81 Types of Printouts Live Data The RESET key, when in main menu, is shared as the PRINT key if the printer protocol has been selected. A printout will be initiated whenever this key is pressed. If printing is not required, do not select printer protocol. The format of this printout will be: Custom Header Lines Current Docket No. Instrument Serial No. & Tag Current Date & Time & Status Total Variable unit value Total Variable unit value (acc) Variable unit value Variable unit value etc. Custom Footer Lines ------------------------------------------- (Note that blank header and footer lines are not printed). Docket Number The docket number that appears on the live data printout indicates the print number. This number is cleared when the Accumulated totals are reset. If the Reset Mode is set for Delayed, where a print can be generated without resetting the non-accumulated totals, an additional number in brackets will be shown that indicates the number of prints since the last reset. i.e. DOCKET No. 000256 (000036) Instrument Serial Number and Unit Tag The instrument serial number and unit tag is the same as the information shown in the Model Info menu. For more details refer to Model Information on page 33.

Individual Log Data When in the Log Menu and while holding the DISPLAY key to view the data of the log of interest the RESET key can be pressed to initiate a printout of that log entry. The printout will have the time and date stamp corresponding to when the log was taken. After the print has been initiated there will be the opportunity to scroll to view another log entry and print again. Since in each log entry all totals are stored as the Accumulated value, the printout will not have any resettable totals. The format of the printout with this exception is the same as the LIVE DATA printout: Custom Header Lines Instrument Serial No. & Tag Log Date & Time & Status Variable unit value Variable unit value etc. Custom Footer Lines -------------------------------------------- Log Report Printing As there is the likelihood that the reports can be of a considerable length it is strongly recommended that only the 80 Column printer with Z fold (tractor feed) paper be used. This is just as much for the memory storage of printer as it is for the reliable paper supply. There is a HOLD.SET REPORT PRINT prompt under the main menu with the ability to print the pre-selected type of report. Pressing and holding the SET key for two seconds will initiate the printout. Any of the Log Reports will have the following format: Custom Header Lines Title of Report Current Date & Time Instrument Serial No. & Tag -------------------------------------------- Log No. Date & Time & Status Variable unit value Variable unit value etc.

83 -------------------------------------------- Log No. Date & Time & Status Variable unit value Variable unit value etc. -------------------------------------------- Log No. Date & Time & Status Variable unit value Variable unit value etc. Custom Footer Lines -------------------------------------------- Reports will print in the historical order, and for those logs that have no data (e.g. unit was powered off at the time) the print will show “Data not available”, i.e. Log No. Date & Time & Status Variable unit value Variable unit value etc. -------------------------------------------- Log No. Data Not Available -------------------------------------------- Log No. Date & Time & Status Variable unit value Variable unit value etc. If the unit is programmed for 0 logs for a particular time base then the report for that time base will only consist of the header and ID information and a “Data Not Available” message. Likewise for the 0Hr to 23Hr report to print the complete report there must be a minimum of 48 hourly logs programmed otherwise “Data Not Available” will be printed for the missing logs. Custom Header Lines Title of Report Current Date & Time Instrument Serial No. & Tag Data Not Available Custom Footer Lines --------------------------------------------

Printer Data Control Some printers have limited data buffers and are therefore unable to collect all the print data being transmitted. The 500 Series has the capability of software handshaking. The Xon/Xoff characters can be used by any of the printer types to control the flow of data to ensure that data is not lost. Some printers will also transmit an Xoff character in response to other events such as printer being off-line, print head not engaged or power being removed. The specific behaviour of the printer being used should be noted. Error Messages There are two printer error messages that can be displayed. PAPER OUT This message is related to the Printer Type PRN-03 TM295 Slip printer. It is standard procedure with this printer to check for paper status before printing. If a print is attempted but there is no paper the PAPER OUT message will be scrolled. The instrument will continue to poll the printer for paper and if paper is detected before a communications timeout expires the print will commence. COMMS TIMEOUT This message is relevant for all printer types and will be activated for the following conditions. 1. If the flow of data is stopped due to software or hardware handshaking and is not allowed to resume before the communications timeout. 2. If Printer Type is PRN-03 Slip printer and a paper status is requested but no response is received within the timeout period. 3. Paper Out has been detected for Printer Type PRN-03 but no paper is inserted within the timeout period. When a communications timeout error has been activated the message COMMS TIMEOUT will be scrolled once, the request to print will be cleared and the instrument will return to its normal mode.

85 Appendix A Glossary Glossary 500-PM Software The 500 Series Program Manager (500-PM software) is a Windows based program that is freely available from the download section of the Contrec website. The program is a comprehensive configuration tool and resource centre that can be used to tailor an instrument to suit specific application needs including program settings, units of measurement, custom tags/text, access levels and more. Custom versions can be saved and configuration reports generated as a PDF. AGA-8 American Gas Association AGA-8 is the equation to predict the compressibility of natural gas mixtures with higher inert contents (up to 50% N2 and /or CO2) and higher pressure and temperature than the NX-19 equation is used for. ASCII American Standard Code for Information Interchange. For the ASCII protocol, the instrument receives and transmits messages in ASCII, with all command strings to the instrument terminated by a carriage return. Replies from the instrument are terminated with a line-feed and a carriage-return. Absolute Pressure Absolute Pressure = Atmospheric Pressure + Gauge Pressure. It is the combined local atmospheric pressure and the gauge pressure. All calculations are based on absolute values for pressure. Some sensors can directly measure the absolute pressure value while others measure gauge pressure. Pressure can be displayed as absolute or gauge and is indicated with an ‘A’ or ‘G’ appended to the pressure units of measure. Atmospheric & Gauge Pressure Some sensors only measure gauge pressure, in this case the atmospheric pressure must be programmed to determine the absolute value. The atmospheric value is affected by the altitude of the installation. The atmospheric pressure default is 101.325 kPa (14.696 psia) which is the standard value at sea level. K-factor The K-factor is a constant value associated with frequency type flowmeters. It is a scaling factor used in calculations to determine flow rate. Modbus RTU The Modbus protocol is a message structure for communications between controllers and devices regardless of the type of network. In RTU (remote terminal unit) mode, each 8-bit byte in a message contains two 4-bit hexadecimal characters. This mode has greater character density than ASCII and allows better data throughput than ASCII for the same baud rate. 515 GN01 - 30 August 2021

Normal Conditions Normal conditions are defined as: • 0°C (273.15 K) and 101.325 kPa • 32°F (491.67°R) and 14.696 psia. A flow rate at normal conditions is indicated with an ‘N’ in the front of the corrected volume units of measure. Compare with Standard conditions. Normalised Input A normalised input ranges from 0 to 1.000. For 4-20 mA input, the signal is set to 0 at 4 mA and the signal is set to 1.000 at 20 mA. NPS Namur Proximity Switch. NX-19 A set of equations for calculating compressibility of natural gas as a function of temperature, pressure and gas composition. Passive Output Signal Requires an external power supply. RTD Resistance Temperature Device Standard Conditions Standard conditions are defined as: • 15°C (288.15 K) and 101.325 kPa, or • 59°F (518.67°R) and 14.696 psia. A flow rate at standard conditions is indicated with an ‘S’ in the front of the corrected volume units of measure. Compare with Normal conditions. Watchdog Timer (WTD) The WDT is used to monitor the activity of the micro processor and will force a reboot if the micro processor stops, while power is applied, due to any internal or external influences.

87 Appendix B Model Numbers Product Codes Note: Example full product part number is 515.111USC-GN01 (This is the number used for placing orders). Model Supplementary Code Description 515 . - GN01 Enclosure 1 Panel mount enclosure 2 Field mount enclosure (NEMA 4X / IP66) 3/5 Explosion proof Ex d (IECEx/ATEX), metric glands (5 specifies heater) 4/6 Explosion proof Ex d (CSA), NPT glands (6 specifies heater) Output Options 0 4 logic inputs, 1 isolated output, 2 relays (only relay type 1 is available), RS232 (DB9) communication port 1 4 logic inputs, 2 isolated outputs, 4 relays, real-time clock data logging, RS232 (DB9) and RS485 communication ports 2/3 4 logic inputs, 2 isolated outputs, 4 relays, real-time clock data logging, RS232 (DB9) and Ethernet communication ports Relay Type 1 Electromechanical relays only 2 2 electromechanical and 2 solid state relays 3 Solid state relays only Power Supply U Inputs for 12-28VDC and 100-240 VAC, 50-60Hz (Previous Models: A = 110/120 VAC, E = 220/240 VAC) D Input for 12-28VDC power only Display Panel Options S Standard option (now with backlight & LCD backup) (original Full option: F, with Infra-Red comms, no longer available) PCB Protection C Conformal coating - required for maximum environmental operating range. Recommended to avoid damage from moisture and corrosion. N None - suitable for IEC standard 654-1 Climatic Conditions up to Class B2 (Heated and/or cooled enclosed locations) Application Pack Number GN01 Defines the application software to be loaded into the instrument For example: Model No. 515.111USC Displayed on the 500 Series as: Note: The first character represents the CPU installed (factory use only). The remaining 6 characters only represent hardware that affects the operation. 2-1--S- 515 MODEL 515 GN01 - 30 August 2021

Custom Version Codes Application Information Code The Application Information code is an aid for users and service personnel to determine the type of inputs that are used in a particular application. The Application Information code is displayed on the instrument as shown below. Code Description Origin Code Identifies Distributor 00 Factory Default Application 01 Contrec Systems Pty. Ltd. Melbourne Australia 02 Contrec Limited. West Yorkshire UK 03 04 Contrec - USA, LLC. Pelham AL 35124 USA 05 Flowquip Ltd. Halifax UK 06 etc. User Language 0 English (Default) 1 German 2 Dutch 3 French 4 Spanish 5 etc. Distributor’s Code 000 Distributor’s own choice. Possibly a code that identifies the customer and the application. … 999 For example: 02 3 157 Displayed on the 500 Series as: 023157 CUSTOM VERS F-tP-- SC01 INPUT Assignment type Application number

89 The Application number identifies the application as in the following examples: • SC01 - steam flow computer for frequency flow meter • GN02 - natural gas flow computer for analog flow meter The Input Assignment type indicates the physical input that is assigned to each input on the instrument. The code is made up from six characters as follows: The codes are as follows: • - - not used in this application • A - indicates a generic analog input such as for density or level etc. • C - indicates a user code input • d - indicates a density input • F - indicates a generic flow input such as for volume or mass etc. • H - indicates a high flow input for stacked inputs • L - indicates a low flow input for stacked inputs • P - indicates a pressure input • q - indicates a quadrature input • t - indicates a temperature input. For example, F-tP-- is an instrument with FINP1 (frequency input 1) assigned to a flow input, AINP1 assigned to a temperature input and AINP2 assigned as a pressure input. The other inputs are not used. FINP1 FINP2 AINP1 AINP2 AINP3 AINP4 X X X X X X

Appendix C Ethernet Port & Setup Ethernet Port The optional Ethernet port simplifies the communication network and avoids the need for an external 3rd party Serial to Ethernet converter. It allows communications via an existing Ethernet network. In some installations you will need to speak with your network (IT) administrator in order to correctly set up your network. Applications, such as DataMod (available via Contrec), can communicate over the Ethernet network to perform remote monitoring and Data Logging operations. Within the instrument’s calibration menus the Ethernet port uses the settings for the RS-485 port that need to match a supplied Ethernet unit as follows: • Protocol: RTU • Baud Rate: 19200 • Data Bits: 8 • Parity: Even • Stop Bits: 1 Data mapping follows the same convention applied to Modbus registers. Connecting 515 Ethernet to Networks/Routers Ethernet 515s are set as default to DHCP (Dynamic Host Configuration Protocol), which should allow your network/router to automatically find and assign an IP address to the instrument (providing there are addresses available). If your network cannot locate the instrument you may need to run the ‘Digi Discovery’ tool (Contrec guide available on request) or enter the Ethernet module’s MAC address within your router settings. If required, the instrument can also be set to a static IP address, however it is strongly advised that only IT competent persons access and edit site network and 515 Ethernet settings. All Ethernet instruments are supplied with the Ethernet module MAC address printed on the outside of the enclosure and also printed directly onto the Ethernet Module itself (the Option card would need to be removed to view the physical Digi Ethernet module). Contrec Limited will not be held responsible for any changes made to customer router and network settings. Further guides on how to access the module settings and discovering IP address’ can be supplied upon request.