Kahn Easidew PRO XP Operation & User’s Manual

Moisture Transmitter User’s Manual Kahn Instruments, Inc. 2016 This document is the property of Kahn Instruments and may not, either in part or whole, be copied or otherwise reproduced, communicated in any way to third parties nor stored in any data processing system, without the written authority of Kahn Instruments, Inc.

This document is the property of Kahn Instruments , Inc. and may not be copied or otherwise reproduced, communicated in any way to third parties, nor stored in any Data Processing System without the express written authorization of Kahn Instruments , Inc. Easidew PRO XP For Kahn Instruments' contact information please go to www.kahn.com

iii 97442 Issue 2.5, January 2016 1 INTRODUCTION.................................................................................................1 1.1 Features............................................................................................................. 1 2 INSTALLATION...................................................................................................2 2.1 Unpacking the Instrument.................................................................................... 2 2.1.1 Wall Mounting ............................................................................................... 3 2.1.2 Pipe Mounting................................................................................................ 5 2.2 Gas Media Process Connection ............................................................................ 6 2.3 Liquid Media Process Connection.......................................................................... 7 2.3.1 Sample Block (Optional)................................................................................ 8 2.4 Electrical Schematic............................................................................................. 9 2.4.1 Easidew PRO XP EX1 (Non-Display)................................................................. 9 2.4.2 Easidew PRO XP EX2 (Display)........................................................................ 9 2.4.3 Electrical Boundaries.................................................................................... 10 2.5 Preparation of the Sensor Cable......................................................................... 11 2.5.1 Terminal Block Connection - Easidew PRO XP EX1 (Non-Display)..................... 11 2.5.2 Terminal Block Connection - Easidew PRO XP EX2 (Display)............................ 12 3 OPERATION.....................................................................................................14 3.1 Measurement and Configuration......................................................................... 14 3.2 Sampling Hints.................................................................................................. 15 4 MAINTENANCE.................................................................................................16 4.1 Calibration........................................................................................................ 16 4.2 Sensor Guard Replacement................................................................................ 16 4.3 Display Replacement..........................................................................................17 4.4 O-Ring Replacement..........................................................................................18 Contents Safety................................................................................................................................. v Electrical Safety............................................................................................................ v Hazardous Area Safety.................................................................................................vii Pressure Safety........................................................................................................... viii Toxic Materials............................................................................................................ viii Repair and Maintenance.............................................................................................. viii Calibration.................................................................................................................. viii Safety Conformity....................................................................................................... viii Abbreviations.......................................................................................................................ix

Kahn Instruments iv Figures Figure 1 Sensor Cap Removal....................................................................................2 Figure 2 Dimensions Easidew PRO XP EX1 (Non-Display) - Wall Mounting.....................3 Figure 3 Dimensions Easidew PRO XP EX2 (Display) - Wall Mounting............................4 Figure 4 Transmitter Mounting - Pipe or Duct.............................................................5 Figure 5 Dimensions Easidew PRO XP EX1 (Non-Display) - Pipe or Duct......................5 Figure 6 Dimensions Easidew PRO XP EX2 (Display) - Pipe or Duct.............................5 Figure 7 Transmitter Direct Mounting.........................................................................6 Figure 8 Transmitter Mounting - Sample Block............................................................8 Figure 9 Outline Dimensions - Sample Block...............................................................8 Figure 10 Electrical Schematic - Easidew PRO XP EX1 (Non-Display)..............................9 Figure 11 Electrical Schematic - Easidew PRO XP EX2 (Display)...................................10 Figure 12 Maximum Load of Easidew PRO XP - Including Cable Resistance..................10 Figure 13 Wire and Crimp Details..............................................................................11 Figure 14 Terminal Block Connection - Easidew PRO XP EX1 (Non-Display) ..................11 Figure 15 Set Screw ................................................................................................12 Figure 16 Terminal Block Mounting - Easidew PRO XP EX2 (Display)............................12 Figure 17 Set Screw ................................................................................................13 Figure 18 Indication of Dead Space...........................................................................15 Figure 19 Replacement of Sensor Guard....................................................................16 Appendices Appendix A Technical Specifications...............................................................................20 Appendix B Hazardous Area Certification.......................................................................23 B.1 Product Standards........................................................................23 B.2 Product Cerification.......................................................................23 B.3 Global Certificates/Approvals.........................................................24 B.4 Special Conditions........................................................................24 B.5 Maintenance and Installation.........................................................24 Appendix C EC Declaration of Conformity.......................................................................26 Appendix D Fully Programmable Loop Powered 4-Digit LED Display Meter........................28 D.1 Display Meter Parameter Limits......................................................28 D.2 Display Meter Operating Range......................................................28 D.3 Display Meter View.......................................................................28 D.4 Re-Configuration Steps..................................................................29 D.5 Moisture Scaling Label..................................................................30 D.6 Technical Specifications - EX2 LED Display......................................31

Kahn Instruments v Safety The manufacturer has designed this equipment to be safe when operated using the procedures detailed in this manual. The user must not use this equipment for any other purpose than that stated. Do not apply values greater than the maximum value stated. This manual contains operating and safety instructions, which must be followed to insure the safe operation and to maintain the equipment in a safe condition. The safety instructions are either warnings or cautions issued to protect the user and the equipment from injury or damage. Use qualified personnel and good engineering practice for all procedures in this manual. Where this symbol appears in the following sections it is used to indicate areas where potentially hazardous operations need to be carried out and where particular attention to personal and personnel safety must be observed. Electrical Safety WARNING: During the installation of this product insure that all applicable national and local electrical safety regulations are observed. WARNING: Isolate the power prior to installation. WARNING: Always insure that power is switched off prior to accessing the product for any purpose other than normal operation or prior to disconnecting any cables. In compliance with IEC 61010 Electrical Safety Standard the following applies to this product: Equipment ratings: This equipment must be supplied with a voltage between the range of 14 to 28 V DC. Maximum power rating is 1 W. The power is connected via PL2 on the pcb.

vi 97442 Issue 2.5, January 2016 The input and output connector is a 2-part pcb mounted type, rated at 300 V, 10 A. The detachable, screw terminal half of each connector is designed to accept 0.02 - 0.09 in2 (0.5- 2.5mm2) [24 -12 AWG] stranded or solid conductors (non-display version only). Any power connection cable should have a minimum 0.5mm insulation and be rated at 300 V. Insure the power supply can deliver sufficient power consumption requirement. Insure any power supply terminals and voltages are suitably separated from the other I/O requirements of this product. Before applying power, perform a continuity test to insure that the power supply screen and product are effectively connected to a ground. The ground terminal is mounted externally and the ground wire connected to it should never be disconnected. The product enclosure is supplied with a 5mm diameter external ground connection at the lower right hand side. At installation, connect this ground connection to a satisfactory ground by a minimum 0.16 in2 (4mm2) ground bonding. This product is designed to operate, as a minimum, between a temperature range of +23°F and +104°F (-5°C and +40°C), in maximum 80% relative humidity for temperatures up to +88°F (+31°C) decreasing linearly to 50% RH at 50°C. Supply voltages of ±10% and transient over voltages up to Overvoltage Category II. Pollution Degree 2. Altitudes up to 6200 ft (2,000 meters). Outdoor mounting is permitted using suitably rated glands equivalent to NEMA 4 / IP66. See Technical Specification Appendix in this manual for full operating parameters. Do not remove or exchange any of the cables or electrical components supplied with this product. To do so will invalidate all warranties. There are no additional or special electrical safety requirements other than those referred to in this manual. Refer to the relevant sections of this manual for the location and mounting details. Installation of this equipment should include the provision of a suitable and locally positioned power isolation switch or circuit breaker. Indication of the purpose of the switch or circuit breaker is strongly recommended. An over-current protection device should be rated to a maximum of 3 A. Insure this equipment and all power isolation devices are installed in a location and position that allows safe and easy access to their operation and is adequate to rigidly support the equipment. Do not install this equipment in a location that would expose it impact or high levels of vibration. Operation of this equipment, other than in a manner as specified by the manufacturer, may impair the safety protections provided. The safe installation of this equipment and any system incorporating this equipment is the responsibility of the installer. Insure local regulations and requirements are referred to prior to any installation commencing.

Kahn Instruments vii Hazardous Area Safety Appendix B of this manual refers to the Hazardous Area Certification of this product. This product is equipped with a marking label that contains Hazardous Area information pertinent to the suitable location and installation. During all installation and operation activities local regulations and permitted working routines must be observed. Installation should only be performed by competent personnel and in accordance with IEC/EN 60079-14:2008 or local equivalent. Cable glands / conduit seals shall be installed in accordance with the manufacturer’s instructions. Conduit seals used should be suitable for a reference pressure of 6.1 bar (89 psi). Repair and servicing of this equipment must only be carried out by the manufacturer. Supplied separately to the manual is an Installation and Maintenance Information Sheet. WARNING: This product is Certified safe for use in a Zone 1 and Zone 2 and Class I, Zone 1 and Class I, Division 1 area only. This product must not be installed or used within a Zone 0 area. WARNING: This product must not be operated within an explosive atmosphere greater than 16 PSIA (1.1 bar) absolute. WARNING: This product must not be operated with enriched Thermal Conductivity gas samples (more than 21% Thermal Conductivity content). WARNING: This product must not be operated outside of the temperature range of -4°F and 158°F (-20°C and +70°C). WARNING: The enclosure of this product provides Exd protection, partly through the threads used for mounting the lid, stopping plugs and cable gland. At all times effort should be made to ensure these threads are suitably protected from damage and that only appropriately rated mating parts are applied to them, in accordance with the certifying requirements.

viii 97442 Issue 2.5, January 2016 Pressure Safety WARNING: This product is used in conjunction with pressurized gases. Observe pressurized gas handling precautions. WARNING: Pressurized gas is dangerous. Pressurized gas should only handled by suitably trained personnel. The Easidew PRO XP requires pressurized gas to be connected to it. Observe pressurized gas handling regulations and only suitable trained personnel should carry out tasks that include the use of pressurized gas. DO NOT permit pressures greater than the safe working pressure to be applied to the instrument. The specified safe working pressure for this instrument is 6500 psig (450 barg) max. Toxic Materials The use of hazardous materials in the construction of this instrument has been minimized. During normal operation it is not possible for the user to come into contact with any hazardous substance which might be employed in the construction of the instrument. Care should, however, be exercised during maintenance and the disposal of certain parts. Long exposure to, or breathing of the calibration gases, may be dangerous. Repair and Maintenance The instrument must be maintained either by the manufacturer or an accredited service agent. For Kahn Instruments’ contact information go to www.kahn.com. Calibration Prior to shipment, the transmitter undergoes stringent factory calibration to traceable standards. A calibration certificate traceable to NIST is provided with each transmitter. Due to the inherent stability of the instrument, regular field calibration should not be required under normal operating conditions. However, Kahn Instruments recommends that a calibration be considered at intervals of every 12 months of the instrument’s life. Kahn Instruments recommends annual recalibration traceable to NIST. Please contact Kahn Instruments for further details (www.kahn.com). Otherwise, the transmitter should perform reliably for many years with just basic maintenance and housekeeping. Safety Conformity This product carries the CE mark.

Kahn Instruments ix Abbreviations The following abbreviations are used in this manual: A ampere A/F across flats barg pressure unit (=100 kP or 0.987 atm) gauge °C degrees Celsius °F degrees Fahrenheit dp dew point DC direct current EU European Union fps feet per second HDPE high-density polyethylene ins inches I/O Input/Output ISO International Organization for Standardization K Kelvin unit of temperature measurement lb/MMSCF pounds of water per million standard cubic feet of gas lb-ft pound foot Nl/min normal liters per minute m meters mA milliampere mg/m3 milligrams per cubic meter mm millimeter mm2 millimeter squared Mpa megapascal m/sec meters per second Nm Newton meter pcb printed circuit board psig pounds per square inch (gauge) ppmV parts per million by volume ppmW parts per million by weight PTFE Polytetrafluoroethylene Ra roughness average (unit of measure of surface finish) RH relative humidity scfh standard cubic feet per hour UNF unified fine thread μm micrometer “ inches % percentage V Volts

Kahn Instruments 1 INTRODUCTION 1 INTRODUCTION The Easidew PRO XP has been manufactured, tested and calibrated to the highest available standards and should arrive in perfect working order, ready for installation into a gas or liquid measurement application. For questions about the instrument or how to install and operate it, contact Kahn Instruments (www.kahn.com). There are two variants of the Easidew PRO XP, each available with various options for display, housing, range, etc: Easidew PRO XP-TX For gases Easidew PRO XP-LQ-TX For liquids 1.1 Features The Easidew PRO XP is a continuous, on-line, 4-20 mA transmitter for the measurement of moisture content in air, other non-corrosive gases and non-polar liquids. It is designed specifically for use within Zone 1 & 2 and Zone 21 & 22 Hazardous Areas (ATEX & IECEx) and Class I, Division 1, Groups B, C & D, Class II and III, Division 1, Groups E, F & G, Class I, Zone 1 & Zone 21 Hazardous Locations (North America). Its key features are: • Dewpoint measurement range -166 to +68°F (-110 to +20°C) • Global explosion / flameproof certification • Accuracy ±1.8°F (±1.0°C) • 2-wire 4-20 mA output • Traceable 13-point calibration certificate • 6500 psig (450 bar) pressure rating • 3/4” UNF industry standard process connection • EN 10204 3.1 material certification • Moisture in gases and liquids • Optional integrated display meter

2 97442 Issue 2.5, January 2016 INSTALLATION 2 INSTALLATION 2.1 Unpacking the Instrument On delivery, please check that all the following standard components are present in the packing box: • Easidew PRO XP Transmitter (EX1 - Non-display OR EX2 - Display) • Certificate of calibration • Quantity two ferrules • 1.5mm A/F Allen key • Quantity 1 conduit entry blanking plug (equipped hand tight) • User manual • Installation and maintenance information sheet • Sample block (optional) • Pipe mounting bracket (optional) • EN10204 3.1 material certificate (optional) The Easidew PRO XP is protected within the main packaging with a green cap protecting the sensor guard with a desiccant capsule inside (see Figure 1), and a plastic cap inside the cable entry opening. Remove and retain these items prior to commissioning. DO NOT HANDLE THE SENSOR GUARD Figure 1 Sensor Cap Removal

Kahn Instruments 3 INSTALLATION 2.1.1 Wall Mounting The instrument is housed in an aluminum or stainless steel Exd enclosure suitable for wall or panel mounting. Two mounting points are available with 0.3 in. (ø7mm) clearance holes on locating centers 5.0 in. (127mm) apart. Use quantity 2 max 0.25 in. (6.5mm) diameter mounting fasteners with a minimum length of 1.4 in. (35mm). The enclosure provides environmental ingress protection of NEMA4/ IP66 and should be mounted vertically in a location free of any appreciable vibration. It is good engineering practice to place it in a shaded location to prevent heating effects through solar radiation. Conduit entries can accept connection for threaded rigid metal conduit or other wiring methods in accordance with Article 501 of the National Electrical Code ANSI/NFPA 70- 2011 and IEC/EN 60079-14:2008. Figure 2 Outline Dimensions - Wall Mounting (Non-Display)

4 97442 Issue 2.5, January 2016 INSTALLATION Figure 3 Dimensions Easidew PRO XP EX2 (Display) - Wall Mounting

Kahn Instruments 5 INSTALLATION 2.1.2 Pipe Mounting The Easidew PRO XP can be supplied with a pipe mounting bracket as an optional accessory, which allows the transmitter to be installed onto pipe up to 2 inch (51mm) diameter. Figure 4 Transmitter Mounting - Pipe or Duct Figure 5 Outline Dimensions - Pipe or Duct (Non-Display) Figure 6 Dimensions Easidew PRO XP EX2 (Display) - Pipe or Duct

6 97442 Issue 2.5, January 2016 INSTALLATION 2.2 Gas Media Process Connection The Easidew PRO XP transmitter can be mounted in any orientation for the following: • inserted into a pipe or duct • inserted into a flow-through sample block (optional). It can be operated up to 6500 psig (450 barg) when installed correctly. If the installation is NOT into a Kahn sample block please take note of the following to insure correct installation is undertaken. The following procedure must be carried out by a qualified engineer to insure the safe operation of the pressure system. Figure 7 Transmitter Direct Mounting 1. Insure the O-ring is located correctly within the O-ring groove of the process connection and that there is no contamination or debris on its exposed surfaces. 2. Insure that the sealing face of the transmitter mounting is normal to the thread 0.003 in./1 in. (0.08mm/25mm) run. 3. Insure that the O-ring mating sealing surface is 0.8 Ra (0.8µm) or better. 4. Insure that the mating connection thread is cut to the correct size (¾ in. UNF x 16) with a minimum chamfer of 0.04 in. (1mm). 5. Screw the transmitter into the sample block and, while holding the block, tighten the seal nut to 29.5 lb-ft (40Nm) to compress the O-ring.

Kahn Instruments 7 INSTALLATION 6. Rotate the enclosure to the desired position (up to 360° available) and tighten the large clamping nut 1¼ in. (32mm) to 7.4 lb-ft (10Nm) to insure the dowty seal is correctly compressed for environmental protection (see Appendix B.1). The recommended fluid flow rate, when mounted in the optional sample block, is 2.1 to 10.6 scfh (1 to 5 l/min). However, for direct insertion applications, the flow can be from static to 32.8 fps (10 m/sec). The Easidew PRO XP is fitted with a mechanical stop to prevent the accidental over-rotation of the enclosure assembly that would damage the internal sensor wiring. 2.3 Liquid Media Process Connection When mounting the Easidew PRO XP into a liquid sample the flow rate must be between 0.2 and 0.6 scfh (0.1 and 0.3 l/min). Consideration should be taken regarding draining the sample fluid at times when the transmitter needs to be removed for maintenance or calibration. It would be beneficial for the Easidew PRO XP to be mounted in a vertical position (with the sensor pointing down) to allow for easy removal when necessary.

8 97442 Issue 2.5, January 2016 INSTALLATION 2.3.1 Sample Block (Optional) The following procedure must be carried out by a qualified engineer to insure the safe operation of the pressure system. 1. Remove the green protective cap and desiccant capsule. 2. Insure the O-ring (see Figure 8) is located correctly within the O-ring groove of the process connection and there is no contamination or debris on its exposed surfaces. 3. Screw the transmitter into the sample block and, while holding the flats on the block, tighten the seal nut to 29.5 lb-ft (40Nm) to compress the O-ring. 4. Rotate the enclosure to the desired position (up to 360° available) and tighten the large clamping nut 1¼ in. (32mm) to 7.4 lb-ft (10Nm) to insure the dowty seal is correctly compressed for environmental protection (see Appendix B.1). Figure 8 Transmitter Mounting - Sample Block Figure 9 Outline Dimensions - Sample Block

Kahn Instruments 9 INSTALLATION 2.4 Electrical Schematic 2.4.1 Easidew PRO XP EX1 (Non-Display) NOTE: To insure compliance with EMC standards, insure that the screen of the power supply/signal cable or the power supply/signal conduit is connected to ground. With the cable entry option, a conductive cable entry gland is recommended, allowing the transmitter housing to be ground via the cable screen connection. Always connect the 4-20 mA return signal to a suitable load (see Figure 15) before the power is applied. Without this connection, the transmitter may be damaged if allowed to operate for prolonged periods. 1 2 3 4 + - LOAD SUPPLY Screen or Conduit Figure 10 Electrical Schematic - Easidew PRO XP EX1 (Non-Display)

10 97442 Issue 2.5, January 2016 INSTALLATION 2.4.2 Easidew PRO XP EX2 (Display) NOTE: To insure compliance with EMC standards, insure that the screen of the power supply/signal cable or the power supply/signal conduit is connected to ground. With the cable entry option, a conductive cable entry gland is recommended, allowing the transmitter housing to be ground via the cable screen connection. Always connect the 4-20 mA return signal to a suitable load (see Figure 16) before the power is applied. Without this connection, the transmitter may be damaged if allowed to operate for prolonged periods. + - LOAD SUPPLY Screen or Conduit TRANSMITTER LOOP POWER +VE VE - +VE VE -  From main transmitter pcb Back of display module Figure 11 Electrical Schematic - Easidew PRO XP EX2 (Display) 2.4.3 Electrical Boundaries 100 200 300 400 500 600 12 14 16 18 20 22 24 26 28 Resistance (ohms) Supply Voltage Figure 12 Maximum Load of Easidew PRO XP - Including Cable Resistance

Kahn Instruments 11 INSTALLATION 2.5 Preparation of the Sensor Cable The sensor cable is not supplied with the Easidew PRO XP, but there are quantity 2 ferrules supplied. Maximum conductor size is 0.75mm². Correct preparation of the cable conductors is essential to insure a reliable connection to the sensor terminals. 1. Strip the insulation from each conductor to 8mm, without damaging any wire strands. 2. Using a crimping tool to correctly attach each ferrule. Figure 13 Wire and Crimp Details 2.5.1 Terminal Block Connection - Easidew PRO XP EX1 (Non-Display) 1. Remove the enclosure lid by carefully unscrewing counter-clockwise 2. Remove the 4-way terminal block from its header on the pcb, being careful not to put any strain onto the ground wire already attached. 3. Mount each of the power and return wires into positions 2 and 4 as shown, and tighten with a flat-blade screwdriver (min torque 0.2 lb-ft (0.25Nm)). Figure 14 Terminal Block Connection - Easidew PRO XP EX1 (Non-Display)

12 97442 Issue 2.5, January 2016 INSTALLATION 4. Plug the terminal block back into the header. 5. Reattach the enclosure lid in a clockwise direction until it stops and secure in place by tightening the set screw with a 1.5mm A/F Allen key. Set screw Figure 15 Set Screw 2.5.2 Terminal Block Connection - Easidew PRO XP EX2 (Display) 1. Remove the enclosure lid by carefully unscrewing counter-clockwise. 2. Lift off the display meter and integral mounting bracket from the 2 mounting posts and pull out the terminal block from the underside. 3. Mount each of the power and return wires into positions +VE and -VE as shown, and tighten with a straight screwdriver (min torque 0.25Nm). Figure 16 Terminal Block Mounting - Easidew PRO XP EX2 (Display) 4. Plug the terminal block back into the underside of the display meter and drop it back onto its posts. Align the display meter in relation to the housing, as required.

Kahn Instruments 13 OPERATION 5. Reattach the enclosure lid in a clockwise direction until it stops and secure in place by tightening the set screw with a 1.5mm A/F Allen key. Set screw Figure 17 Set Screw

14 97442 Issue 2.5, January 2016 OPERATION 3 OPERATION 3.1 Measurement and Configuration The Easidew PRO XP can be configured to provide an output of 4-20 mA (2-wire connection) for the following: Dew point -166 to +68°F (-110 to +20°C) Moisture content in gas 0 - 3000 ppmV Moisture content in liquids 0 - 1000 ppmW The Easidew PRO XP can be purchased factory configured as required. Alternatively, the Easidew PRO XP can be configured by the customer, using the Easidew XP Communications Kit (XP-CK) and Easidew Application Software. The Easidew Communications Kit can be purchased from Kahn Instruments. For a free copy of the Application Software contact Kahn Instruments (www.kahn.com). For moisture content in gas, the calculation from the measured dew point is assumed to be at atmospheric pressure. Alternatively, a fixed gas pressure needs to be programmed into the Easidew PRO XP. For moisture content measurement in liquid, the Easidew PRO XP requires the saturation constant of the liquid to be programmed into the transmitters, either at the factory or by the customer using the Application Software. The transmitter requires a 6-point look-up table for saturation constants up to 1000 ppmW over the temperature range +32 to +122°F (0 to +50°C). Saturation constants for 8 common liquids can be programmed into the Easidew PRO XP via the Application Software. Alternatively, the user can program saturation constants manually. The Application Software Help file provides detailed instructions on how to perform this task. Easidew PRO XP EX2 (Display) Only The display meter is simple in design and is a slave display to the measurement and configuration of the main transmitter pcb. It can be scaled linearly equating to the circulating 4-20 mA signal output from the main transmitter pcb. In order to re-configure the display, the enclosure lid should be removed by unscrewing it in a counter-clockwise direction. Care should be taken when unscrewing and replacing the enclosure lid as the threads form an important part of the Ex compliance regulations and therefore must not be damaged. The lid must be replaced after using the display meter and the set screw tightened. A full explanation of the operation and configuration of the integral display meter is detailed in Appendix D.

Kahn Instruments 15 OPERATION 3.2 Sampling Hints Operation is very simple, assuming the following installation techniques are adhered to: Be Sure the Sample is Representative of the Gas Under Test: The sample point should be as close to the critical measurement point as possible. Also, never sample from the bottom of a pipe as entrained liquids may be drawn into the sensing element. Minimize Dead Space in Sample Lines: Dead space causes moisture entrapment points, increased system response times and measurement errors, as a result of the trapped moisture being released into the passing sample gas and causing an increase in partial vapor pressure. Deadspace  Figure 18 Indication of Dead Space Remove Any Particulate Matter or Oil from the Gas Sample: Particulate matter at high velocity can damage the sensing element and similarly, at low velocity, they may ‘blind’ the sensing element and reduce its response speed. If particulate, such as degraded desiccant, pipe scale or rust is present in the sample gas, use an in-line filter, as a minimum level of protection. For more demanding applications Kahn Instruments offers a range of sampling systems (for more information contact www.kahn.com). Use High Quality Sample Tube and Fittings: Kahn Instruments recommends that, wherever possible, stainless steel tubing and fittings should be used. This is particularly important at low dew points since other materials have hygroscopic characteristics and adsorb moisture on the tubing or pipe walls, slowing down response and, in extreme circumstances, giving false readings. For temporary applications, or where stainless steel tubing is not practical, use high quality thick walled PTFE tubing and work within the maximum pressure rating of this tubing. Position Transmitter away from Heat Source: It is recommended, as good instrumentation practice, that the transmitter is placed away from any heat source to avoid adsorption/desorption (particularly solar radiation during daylight hours).

16 97442 Issue 2.5, January 2016 MAINTENANCE 4 MAINTENANCE ! The power to the enclosure must be turned off before any work is carried out in the measurement system enclosure. Observe de-energize durations. Gas line connections to the measurement system must be isolated and de-pressurized before any work commences. 4.1 Calibration Routine maintenance of the Easidew PRO XP is confined to regular re-calibration by exposure of the transmitter to sample gases of known moisture content to insure that the stated accuracy is maintained. Calibration services traceable to the US National Institute of Standards and Technology (NIST) are provided by Kahn Instruments. Kahn Instruments offers a re-calibration service to suit specific needs. A Kahn representative can provide detailed, custom advice (for Kahn Instruments’ contact information go to www.kahn.com). 4.2 Sensor Guard Replacement The sensor is supplied with either a stainless steel sintered or HDPE guard. The stainless steel guard provides >80μm protection to the dew-point sensor, whereas the HDPE protects to >10μm. It is designed to show any contamination and the guard should be changed if the surface becomes discolored. When replacing the guard, care should be taken to minimize touching the guard which should be handled by the threaded part. Replacement guards can be obtained by contacting Kahn Instruments (www.kahn.com) or your local distributor. Please note the sensor tile should not be touched. HANDLE THIS THREADED PART ONLY Figure 19 Replacement of Sensor Guard

Kahn Instruments 17 MAINTENANCE 4.3 Display Replacement 1. Unscrew the locking screw on the enclosure cap with a 1.5mm Allen key. 2. Unscrew the cap, lift the display and mounting ring clear from the 2 off mounting pillars, and unplug the connector. 3. Remove the 2 off small screws holding the display onto its mounting ring. Lift the display clear. 4. Re-assemble as above, in reverse order, being careful not to overtighten the screws. Insure that the connector is fully mated. 5. Re-fit the enclosure cap and tighten the locking screw. 6. The display is supplied with a default configuration. Refer to Appendix D.4 ‘Re-configuration Steps’ if required.

18 97442 Issue 2.5, January 2016 MAINTENANCE 4.4 O-Ring Replacement Do not touch the filter with bare hands 1. Identify the O-ring to be removed, as shown below. BS116 (3/4” x 3/32”) viton, 75 shore 2. Carefully slide tweezers, thin bladed screwdriver or a blunt needle under the outer edge of the O-ring. NOTE: Take care not to scratch any of the surfaces of the surrounding metal component. 3. Move the tool around the circumference to assist the extraction process. Slide the O-ring clear of the thread and filter. 4. Make sure the groove has no scratches and is free from grease, dirt or debris. Slide the new O-ring over the filter and thread and into the groove. NOTE: Do not touch the filter with bare hands.

20 97442 Issue 2.5, January 2016 APPENDIX A Appendix A Technical Specifications Product Easidew PRO XP for Gases Easidew PRO XP LQ for Liquids Performance Specifications Measurement Range -166 to +68°Fdp (-110 to +20°Cdp) -148 to +68°Fdp (-100 to +20°Cdp) 0 to 1000 ppmW Non-standard available upon request Accuracy ±1.8°F (±1°C) dew point +68 to -76°F (+20 to -60°C) ±3.6°F (±2°C) dew point -76 to -166°F (-60 to -110°C) Response Time 5 mins to T95 (dry to wet) Repeatability ±0.9°Fdp (0.5°Cdp) Calibration Traceable 13-point calibration certificate Electrical Specifications Output Signal 4-20 mA (2-wire connection) current source User-configurable over range Output Dew point or moisture content in ppmV Moisture content Analog Output Scaled Range Dew point -166 to +68°F (-110 to + 20°C) Moisture content in gas: 0 to 3000 ppmV Non-standard mg/m3, lbs/MMSCF, natural gas Moisture content in liquid: 0 to 1000 ppmW Non-standard available upon request Supply Voltage 14 to 28 V DC Load Resistance Max 250 Ω @ 14 V (500 Ω @ 24 V) Current Consumption 23 mA (depending on signal output) Saturation Constants (for moisture in liquids measurements only) 6-point look-up table for saturation constants up to 1000 ppmW over the temperature range +32 to +122°F (0 to +50°C) Saturation constants for 8 common liquids can be programmed into the Easidew PRO XP LQ via the Application Software Alternatively, the user can program saturation constants manually Operating Specifications Operating Temperature -4 to +158°F (-20 to +70°C) Operating Pressure 45 MPa (6500 psig / 450 barg) max Flow Rate 2.1 to 10.6 scfh (1 to 5 Nl/min) mounted in standard sampling block 0 to 32.8 fps (0 to 10 m/sec) direct insertion Temperature Coefficient Temperature compensated across operating temperature range

Kahn Instruments 21 APPENDIX A Mechanical Specifications Ingress Protection IP66 in accordance with standard BS EN 60529:1992 NEMA 4 in accordance with standard NEMA 250-2003 Canadian Pressure Vessel Cert C.R.N. - all Canadian provinces Housing Material Standard: Optional: Aluminum (copper free), epoxy and polyurethane powder coated, blue RAL 5009 316 stainless steel (supplied with BS EN 10204 3.1 material certification if option F2 requested) ATEX & IECEx only. Stainless steel is not cCSAus approved for N. America Dimensions Refer to diagram in Section 2.1.1 Filter (Sensor Protection) Standard: Optional: Stainless steel sintered guard (for protection against fine particulate >80µm) HDPE guard (for protection against fine particulate >10µm) Process Connection & Material 3/4” - 16 UNF with recessed Viton® O-ring 316 stainless steel Weight Aluminum: 3.5lbs (1.6kg) 316 stainless steel: 5.3lbs (2.4kg) Electrical Connections Dual 3/4” NPT gland Display Meter Programmable Display Range Optional: -1999 to +9999 Programmable Decimal Point Optional: 0 to 3 decimal places Overload Limits Optional: 3.6 mA & 20.4 mA Programmable Display Scales Optional: °C, °F, %, No scale Hazardous Area Certification Certification Codes (See also Housing Material section above) ATEX II 2 G D Ex d [ia] IIC T6 Gb Ex tb IIIC T80°C Db IP66 (-20°C to +70°C) IECEx Ex d [ia] IIC T6 Gb Ex tb IIIC T80°C Db IP66 (-20°C to +70°C) INMETRO Ex d [ia] IIC T6 Gb Ex tb IIIC T80°C Db IP66 (-20°C to +70°C) TC TR Ex EX 1 Ex d [ia] IIC T6 Gb X EX tb IIIC T80°C Db X (-20°C to +70°C) cCSAus Class I, Division 1, Groups ABCD Class II & III, Division 1, Groups EFG Class I, Zone 1 AEx/Ex d [ia] IIC T6 Zone 21, AEx/Ex tb IIIC T80°C

22 97442 Issue 2.5, January 2016 APPENDIX B Appendix B Hazardous Area Certification

97442 Issue 2, July 2014 23 APPENDIX B Appendix B Hazardous Area Certification The Easidew PRO XP is certified compliant to the ATEX Directive (2014/34/EU) and IECEx for use within Zone 1 & 2 and Zone 21 & 22 Hazardous Areas and has been assessed so by SIRA Certification (Notified Body 0518). The Easidew PRO XP is certified compliant to the North American Standards (USA and Canada) for use within Class I, Division 1, Groups A, B, C & D, Class II and III, Division 1, Groups E, F & G, Class I, Zone 1 & Zone 21 Hazardous Locations and has been assessed so by cCSAus. B.1 Product Standards This product conforms to the Standards: EN60079-0:2012 IEC 60079-0:2011 EN60079-1:2007 IEC 60079-1:2007 EN60079-11:2012 IEC 60079-11:2011 EN60079-31:2009 IEC 60079-31:2008 C22.2 No. 0-M10 CAN/CSA-C22.2 No. 60079-0:11 C22.2 No. 25-1966 CAN/CSA-C22.2 No. 60079-1:11 C22.2 No. 30-M1986 CAN/CSA-C22.2 No. 60079-11:11 C22.2 No. 142-M1987 CAN/CSA-C22.2 No. 60079-31:12 C22.2 No. 157-92 ISA 60079-0:11 FM Class 3600 ISA 60079-1:09 FM Class 3610 ISA 60079-11:11 FM Class 3615 ISA 60079-31:12 FM Class 3616 UL 916-2003 B.2 Product Certification This product is attributed with the product certification code: ATEX & IECEx II 2 GD Exd [ia] IIC T6 Gb Ex tb IIIC T80°C Db IP66 (-20°C to +70°C) North American Class I, Division 1, Groups A,B,C,D Class II & III, Division 1, Groups E,F,G Class I, Zone 1 AEx/Ex d [ia] IIC T6 Zone 21, AEx/Ex tb IIIC T80°C

24 97442 Issue 2.5, January 2016 APPENDIX B B.3 Global Certificates/Approvals ATEX SIRA14ATEX1007X IECEx IECEx SIR 14.0004X cCSAus 2679645 INMETRO NCC 14.03240 X TC TR Ex RU C-GB.ГБ05.В.00833 These certificates can be viewed or downloaded from our website at: http://www.kahn.com B.4 Special Conditions 1. The equipment has been assessed with a Um of 28V and shall be installed in accordance with the latest installation requirements of IEC/EN 60079- 14 for intrinsically safe equipment for EPL “Gb”. 2. The transmitter shall not be installed in such a manner that the sensing probe is in a dust environment. 3. WARNING - POTENTIAL ELECTROSTATIC CHARGING HAZARD. The equipment must only be wiped with a damp cloth. 4. When installing the transmitter a torque of 10 Nm must be applied to the sensor body/housing positioning lock nut to secure it. See manufacturer’s instructions for further details. B.5 Maintenance and Installation The Easidew PRO XP must only be installed by suitably qualified personnel and in accordance with the instructions provided and the terms of the applicable product certificates. Maintenance and servicing of the product must only be carried out by suitably trained personnel or returned to Kahn Instruments.

Kahn Instruments 25 APPENDIX C Appendix C EC Declaration of Conformity

26 97442 Issue 2.5, January 2016 APPENDIX C Appendix C EC Declaration of Conformity

Kahn Instruments 27 APPENDIX D Appendix D Fully Programmable Loop Powered 4-Digit LED Display Meter

28 97442 Issue 2.5, January 2016 APPENDIX D Appendix D Fully Programmable Loop Powered 4-Digit LED Display Meter In order to re-configure the display meter, the enclosure lid should be removed by unscrewing it in a counter-clockwise direction. Care should be taken when unscrewing and replacing the enclosure lid as the threads form an important part of the Ex compliance regulations and therefore must not be damaged. The lid must be replaced after using the display meter, and the set screw tightened. D.1 Display Meter Parameter Limits The programmable display meter is designed for current loops of 4-20 mA. It is powered from the loop and does not require any other supply. The display can be configured by set-up menus to show physical values measured by the sensor. Display will indicate low (-LO-) when the input current is lower than the overload limit (3.6 mA). Display will indicate high (-HI-) when the input current is higher than overload limit (20.4 mA). Display will indicate (----) when displayed value is <1999 or >9999. D.2 Display Meter Operating Range Operating Range from 3.6 to 20.4 mA Maximum Voltage Drop Out 3.7 V Display LED 4 digits, height 9.5mm Indication Limits from -1999 to 9999 Variable Sampling Time from 1 to 10 seconds D.3 Display Meter View E Easidew PRO XP Moisture Transmitter °C DP

Kahn Instruments 29 APPENDIX D D.4 Re-Configuration Steps To enter menu press the E button for 2 seconds. Displayed Text Description Setting decimal point DP Press E button Press and buttons to change decimal position 1.234 (value 3) 12.34 (value 2) 123.4 (value 1) Factory default 1234 to decimal point (value 0) Press E button. Press to go to Zero Setting Displayed Text Description Setting low limit Zero (set-up of the low limit) Press E button Press and buttons to change the value between -1999 and 9999 (the value chosen will be displayed at input current of 4 mA-point low) NOTE: For 1 decimal place resolution set this value to 10 times the actual required value, e.g. -1000 for -100.0 / -1100 for -110.0 Press E button. Press to go to Span Setting Displayed Text Description Setting high limit SPAN (setup of the high limit) Press E button Press and buttons to change the value between -1999 and 9999 (the value chosen will be displayed at input current of 20 mA-point high) NOTE: For 1 decimal place resolution set this value to 10 times the actual required value, e.g. 200 for 20.0 Press E button. Press to go to Li Setting Displayed Text Description Setting overload limit Li (set-up of the overload limit) Press E button Press and buttons to change the value 0 for 4-20 mA the display shows -LO- when current < 4 mA and -HI- when current >20 mA 1 for 3.6 mA - 20.4 mA Factory default the display shows -LO- when current <3.6 mA -HI- when current >20.4 mA Press E button. Press to go to St Setting

30 97442 Issue 2.5, January 2016 APPENDIX D Displayed Text Description Setting sampling rate St Press E button Press and buttons to change the sampling rate from 1 to 10 seconds 1 = Factory default Press E button. Press to go to Engineering Unit Displayed Text Description Set-up Engineering Unit Press E button Press and buttons to select the unit - nonE - for no unit on the display (factory default setting) see D.5 - °C, °F, K, % (There is a 6 second cycle - measured value is displayed for 4 seconds - the unit is displayed for 2 seconds) Press E button Exit from menu and save settings: Press and buttons (possible from each page) D.5 Moisture Scaling Label The Easidew PRO XP has 3 standard ranges and scales which are as follows: EA-XP-TX -110 to +20°Cdp output range -100 to +20°Cdp output range EA-XP-LQ-TX 0-3000ppmW The EA-XP-TX units will be configured for the range/scale ordered (as above) and will constantly display the measured value. The display meter will have a stick-on label defining the scale in °C DP. E Easidew PRO XP Moisture Transmitter °C DP Label If ordered with a non-standard range/scale the unit could be set up with the following: °F DP lbs/MMSCF ppmV ppmW mg/m3 Alternatively, an Easidew PRO XP Communication Kit (XP-CK) can be used to change the range/scale and this Kit will be shipped with its own manual and 2 additional sets of scaling labels so that the label can be changed as required.

Kahn Instruments 31 APPENDIX D D.6 Technical Specifications - EX2 LED Display The display meter is simple in design and is a slave display to the measurement and configuration of the main transmitter pcb. It can be scaled linearly equating to the circulating 4-20 mA signal output from the main transmitter pcb. + - LOAD SUPPLY Screen or Conduit TRANSMITTER LOOP POWER +VE VE - +VE VE -  From main transmitter pcb Back of display module Performance Reference Operating Condition 25°C Maximum Measured Error 0.1% of the programmed range ± 1 digit Influence of Ambient Temperature (temp drift) 20 ppm / °C of measuring range at 20°C as reference temperature Output Signal 4-20 mA Supply Voltage 24 V (10 to 30 V) Voltage Drop Out 3.3 V at 4 mA and 3.7 V at 20 mA Minimum Current of LED Activation 3.6 mA Digits LED, 4 digits 7 segments, height 9.5mm Display Characteristics 6400ucd for If=10 mA Storage Period 10 years (non-powered) Operating Conditions Ambient Temperature -4 to +176°F (-20 to +80°C) Storage Temperature -22 to +176°F (-30 to +80°C) Functionality Parameters Zero, span, decimal, point, refresh rate, unit Indication Limit -1999 to +9999 Programmable Range -1999 to +9999 Decimal Points Position 0, 1, 2, 3 decimals Overload Limits From 3.6 to 20.4 mA Refresh Rate From 1 to 10 seconds Unit °C, °F, K, % in cycle: 4 second value - 2 second unit Mechanical Construction Electrical Loop Connection 2 terminals, max wire section 1mm2 (16 AWG)