RKI Instruments GX-6000 Operator's Manual

Operator’s Manual Part Number: 71-0363 Revision: 0 Released: 8/10/17

WARNING Read and understand this instruction manual before operating instrument. Improper use of the gas monitor could result in bodily harm or death. Periodic calibration and maintenance of the gas monitor is essential for proper operation and correct readings. Please calibrate and maintain this instrument regularly! Frequency of calibration depends upon the type of use you have and the sensor types. Typical calibration frequencies for most applications are between 1 and 3 months, but can be required more often or less often based on your usage.

Table of Contents Table of Contents Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 About the GX-6000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Chapter 2: Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Instrument Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Control Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Flashlight LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Alarm LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Infrared Communications Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Vibrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Printed Circuit Boards (PCBs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Flow Chamber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Inlet Filter Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Included Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Tapered Rubber Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Belt Clip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Rubber Boot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Wrist Strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Sample Hose and Probe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Screen Protector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Other Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 VOC Zero Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 DIN Rail Mounting Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

GX-6000 Operator’s Manual Chapter 3: Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Turning On the GX-6000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Performing a Demand Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Turning Off the GX-6000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Measuring Mode, Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Monitoring an Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Using Optional Sample Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Snap Log Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Measuring Mode, Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Alarm Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Responding to Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Display Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Tips for Using Display Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 PID Gas Name Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Peak Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 STEL Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 TWA Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 View Alarm Settings Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Time in Operation Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Date/Time, Battery Voltage Screen . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Log Time Remaining Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Clear Data Logging Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Pump Off Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Select User ID Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Select Station ID Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Viewing Snap Logger Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Peak Bar Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Gas Display Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 LCD Flip Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 LCD Background Color Flip Screen . . . . . . . . . . . . . . . . . . . . . . . . . 57 Language Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Table of Contents Chapter 4: Calibration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Calibration Supplies and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Entering Calibration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Calibrating Using the Auto Calibration Method . . . . . . . . . . . . . . . . . . . . . 61 Setting the Fresh Air Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Performing a Span Adjustment in Auto Calibration . . . . . . . . . . . . . 63 Returning to Measuring Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Calibrating Using the Single Calibration Method . . . . . . . . . . . . . . . . . . . . 69 Setting the Fresh Air Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Performing a Span Adjustment in Single Calibration . . . . . . . . . . . 70 Performing a Bump Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Chapter 5: User Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Tips for Using User Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Entering User Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Setting the Date and Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Setting the Date Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Configuring the Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Updating the Language Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Viewing the ROM/SUM of the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . 84 Turning the Password Function On or Off. . . . . . . . . . . . . . . . . . . . . . . . . . 85 Exiting User Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Chapter 6: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Replacing or Recharging the Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Replacing the Alkaline Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Replacing the Lithium Ion Battery Pack . . . . . . . . . . . . . . . . . . . . . . 91 Recharging the Lithium Ion Battery Pack . . . . . . . . . . . . . . . . . . . . . 93 Recharging the Lithium Ion Battery Pack Out of the Instrument . . . 95 Replacing the Probe’s Particle Filter and Hydrophobic Filter Disk . . . . . . 98 Replacing the PID Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Replacing the Hydrophobic Filter and Wire Mesh Disk . . . . . . . . . . . . . . 102

GX-6000 Operator’s Manual PID Sensor Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Cleaning the PID Sensor’s Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Replacing the PID Sensor’s Lamp. . . . . . . . . . . . . . . . . . . . . . . . . . 107 Replacing the PID Sensor’s Electrode Stack. . . . . . . . . . . . . . . . . . 110 General Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Appendix A: Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 116 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 Tips for Using Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 Using Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Setting the Date and Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 Setting the Date Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Performing a Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Performing a Bump Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Updating Calibration Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Updating Bump Test Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Updating Alarm Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 Turning the Pump On/Off Display On or Off . . . . . . . . . . . . . . . . . 134 Turning the User/Station ID Function On or Off . . . . . . . . . . . . . . 135 Updating the Backlight Time Setting . . . . . . . . . . . . . . . . . . . . . . . . 135 Updating the Language Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Updating the Lunch Break Setting. . . . . . . . . . . . . . . . . . . . . . . . . . 136 Updating the Auto Zero Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Updating the Demand Zero Setting . . . . . . . . . . . . . . . . . . . . . . . . . 137 Zero Follower Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Zero Suppression Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Updating the Autoranging Setting. . . . . . . . . . . . . . . . . . . . . . . . . . 137 Updating the Confirmation Alert Setting. . . . . . . . . . . . . . . . . . . . . 137 Turning the Key Tone Noise On or Off . . . . . . . . . . . . . . . . . . . . . . 138 Turning Inert Mode On or Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Updating the Leak Check/Bar Hole Mode Setting. . . . . . . . . . . . . . 138 Setting the Bar Hole Measurement Time . . . . . . . . . . . . . . . . . . . . . 138 Updating the CO Display Setting . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Updating the Man Down Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Updating the Datalogging Parameters . . . . . . . . . . . . . . . . . . . . . . 141 Adjusting the Low Flow Setpoint. . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Viewing the ROM/SUM of the Instrument . . . . . . . . . . . . . . . . . . . . 144 Turning the Password Function On or Off . . . . . . . . . . . . . . . . . . . 144

Table of Contents Restoring the Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 Exiting Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Appendix B: 10.0 eV/Benzene PID Sensor . . . . . . . . . . . . . . . . . . . 148 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Sensor Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Tube and Tube Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Tube Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 Display Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 Measuring Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 Benzene Select Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 Viewing Benzene Select Mode Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Calibrating the 10.0 eV/Benzene PID Sensor . . . . . . . . . . . . . . . . . . . . . . 160 Important Calibration Information . . . . . . . . . . . . . . . . . . . . . . . . . 160 Performing an AUTO CAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Performing a SINGLE CAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Performing a TUBE CAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Entering a CAL CODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 PID Sensor Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 Replacing a Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 WARNING: Understand manual before operating. Substitution of components may impair intrinsic safety. To prevent ignition of a hazardous atmosphere, batteries must only be changed or charged in an area known to be nonhazardous. Not tested in oxygen enriched atmospheres (above 21%). NOTE: RKI Instruments, Inc. recommends that you refer to ISA-RP12.13, Part II-1987 or an equivalent international recommended practice for guidance in the use of combustible gas detection instruments.

GX-6000 Operator’s Manual Chapter 1: Introduction Overview This chapter briefly describes the GX-6000 Single Sensor PID Model gas monitor. This chapter also describes the GX-6000 Single Sensor PID Model Operator’s Manual (this document). Table 1 at the end of this chapter lists the specifications for the GX-6000 Single Sensor PID Model (hereafter referred to as the GX-6000). About the GX-6000 The GX-6000’s rugged, reliable, and easy-to-use design makes it ideally suited for a wide range of applications, including sewage treatment plants, utility manholes, tunnels, hazardous waste sites, power stations, petrochemical refineries, mines, paper mills, drilling rigs, and fire fighting stations. The GX-6000 offers a full range of features including: • VOC monitoring • Sample-drawing pump with up to 50 foot range • Liquid crystal display (LCD) for complete and understandable information at a glance • Ultrabright alarm LEDs • Distinctive audible/vibrating alarms for dangerous gas conditions and audible alarms for unit malfunction • Microprocessor control for reliability, ease of use, and advanced capabilities • Data logging functions • Alarm trend data • STEL and TWA (for high range PID only) and over range alarms • Peak reading • Built-in time function • Lunch break feature • RF shielded high impact plastic case • CSA classification for Class I, Division I, Groups A, B, C, and D hazardous atmospheres

About the GX-6000 • 2 WARNING: The Model GX-6000 detects elevated levels of VOC gases which can be dangerous or life threatening. When using the GX-6000, you must follow the instructions and warnings in this manual to assure proper and safe operation of the unit and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the GX-6000 as described in this manual.

GX-6000 Operator’s Manual Specifications Table 1: Sensor Specifications/Alarm Points Table 2: GX-6000 Specifications VOCs, Isobutylene Calibration Standard Low Range PID High Range PID Detection Range 0 - 50000 ppb 0 - 6000 ppm Reading Increment • 0 - 5000: 1 ppb • 5000 - 50000: 10 ppb • 0 - 600 ppm: 0.1 ppm • 600 - 6000 ppm: 1 ppm Alarm 1 Factory Setting 5000 ppb 400 ppm Alarm 2 Factory Setting 10000 ppb 1000 ppm STEL Alarm n/a 60.0 ppm TWA Alarm n/a 42.0 ppm Sampling Method Sample Draw Response Time T90 Within 30 Seconds Display Graphics LCD Display Operating Temperature & Humidity -20°C to 50°C/Below 95% RH (Without Condensation) Safety/ Regulatory • ATEX: II 1 G Ex ia IIC T4 Ga Certificate Number Presafe 15ATEX6171 • IECEx: Ex ia IIC T4 Ga Certificate Number PRE 15.0011 • CSA classified as Intrinsically Safe. Exia. Class I, Groups A, B, C, & D. Temperature Code T3A. 186718 Power Supply • Three AA size alkaline batteries OR • One lithium ion battery pack

Specifications • 4 Continuous Operating Hours @ 25 °C • Alkaline Batteries: 20 Hours (Non Alarm Operation, Fully Charged) • Li-ion Battery Pack: 25 Hours (Non Alarm Operation, Fully Charged) Case High-impact Plastic, RF Shielded, Dust and Weather Proof Included Accessories • Belt clip • Red rubber boot • Wrist strap • Tapered nozzle • Screen protector • 3 foot hose and probe • VOC zero filter (included for instruments with a low range PID sensor) Other Accessories • Alkaline Battery Pack • Rechargeable Li-ion Battery Pack • 115 VAC Charger • 12 VDC Charger • Hose/Probes of Various Lengths, See “General Parts List” on page 113. • VOC Zero Filter (optional for instruments with a high range PID sensor) • DIN Rail Mounting Assembly (for mounting chargers to the wall) • Product CD, includes Data Logger Management Program • IrDA/USB Cable for connecting to a computer when using the Data Logger Management Program (not needed if computer has an infrared port) Dimensions and Weight Approximately 200(H) x 68(W) x 52(D) mm (7.9”H x 2.7”W x 2.0”D) Approximately 400 g (14 oz.)

GX-6000 Operator’s Manual About this Manual Although the GX-6000 can support up to 6 sensors, this manual specifically describes an instrument with only a PID sensor installed. The GX-6000 Single Sensor PID Model Operator’s Manual uses the following conventions for notes, cautions, and warnings. NOTE: Describes additional or critical information. CAUTION: Describes potential damage to equipment. WARNING: Describes potential danger that can result in injury or death. The GX-6000 Single Sensor PID Model Operator’s Manual is organized as follows: • Chapter 1 is an introduction to the GX-6000. • Chapter 2 describes the components of the GX-6000. • Chapter 3 describes the operation of the GX-6000. • Chapter 4 describes Calibration Mode which allows you to calibrate the GX-6000. • Chapter 5 describes the GX-6000’s User Mode. • Chapter 6 describes the GX-6000’s maintenance requirements and procedures. • Appendix A describes Maintenance Mode which allows you to configure different parameters of the GX-6000. • Appendix B describes the 10.0 eV/benzene PID sensor.

Overview • 6 Chapter 2: Description Overview This chapter describes the GX-6000 instrument and accessories. Instrument Description The GX-6000 includes the case, LCD, control buttons, flashlight LED, alarm LEDs, infrared communication port, buzzer, vibrator, printed circuit board, pump, flow chamber, sensor, filters, inlet filter holder, and batteries. Figure 1: Component Location Case The GX-6000’s sturdy, high-impact plastic case is radio frequency (RF) resistant and is suitable for use in many environmental conditions, indoors and out. The case is dust proof and water resistant. A clear plastic window is located on the front of the case. The battery pack and flow chamber are located on the back of the GX-6000. The inlet filter holder is located on the top of the GX-6000 case. Inlet Filter Holder Flow Chamber Battery Pack Flashlight LED Alarm LEDs RKI GX-6000 DISP LOCK (PANIC) AIR S HIFT RESE T Infrared Communications Port Control Buttons LCD P OW ER/E NTER

GX-6000 Operator’s Manual LCD A digital LCD (liquid crystal display) is visible through a clear plastic window in the top case. The LCD shows the gas reading. The LCD also shows information for each of the GX-6000’s operating modes. Control Buttons Five control buttons are located below the LCD. They are, from left to right and top to bottom, DISP/LOCK, ▲ AIR, SHIFT ▼ (PANIC), POWER/ ENTER, and RESET. Flashlight LED A white LED is visible through a round, raised, frosted lens in the top of the case. This LED can be used to provide extra light, if necessary. The RESET button turns this LED on and off. Table 3: GX-6000 Control Button Functions Button Function(s) DISP/LOCK • activates Display Mode • enters instructions into the GX-6000’s microprocessor • allows you to exit a menu without saving changes • locks screen orientation in any mode if INVERSION SELECT is set to ON ▲ AIR • activates the demand zero function (adjusts the GX-6000’s fresh air reading) • enters instructions into the GX-6000’s microprocessor • moves the cursor on the LCD up the screen • increases the value of a parameter available for adjustment • scrolls through parameter options SHIFT ▼ (PANIC) • enters instructions into the GX-6000’s microprocessor • moves the cursor on the LCD down the screen • decreases the value of a parameter available for adjustment • scrolls through parameter options • initiates a Panic alarm in any mode if PANIC is set to ON POWER/ENTER • turns the GX-6000 on and off • enters instructions, values, and settings into the GX-6000’s microprocessor RESET • silences and resets audible alarm if ALARM LATCHING is set to LATCHING and ALARM SILENCE is set to ON • turns the flashlight LED on and off

Instrument Description • 8 Alarm LEDs Five sets of red alarm LEDs (light emitting diodes) border the LCD. The alarm LEDs alert you to gas, low battery, and failure alarms. Infrared Communications Port An infrared (IR) communications port is located on the front of the case, below the POWER/ENTER button. The data transmitted through the port is in standard IrDA protocol. A computer’s infrared port or an IrDA/USB cable connected to a USB port can be used to download data saved by the GX-6000 to a computer using the GX-6000 Data Logger Management Program. See the GX-6000 Data Logger Management Program operator’s manual for data logging and downloading instructions. Buzzer One solid-state electronic buzzer is located inside the case. Holes on the top front of the case allow the sound to exit the case. The buzzer sounds for gas alarms, malfunctions, low battery voltage, and as an indicator during use of the GX-6000’s many display and adjustment options. Vibrator A vibrating motor inside the GX-6000 case vibrates for gas alarms, unit malfunctions, and as an indicator during normal use of the various modes of the GX-6000. Printed Circuit Boards (PCBs) The GX-6000 printed circuit boards analyze, record, control, store, and display the information collected. The circuit boards are located inside the case. They are not user serviceable. Pump A diaphragm pump inside the GX-6000 draws the sample to the sensor. It can draw sample from as far as 50 feet from the GX-6000. The pump is not user serviceable. CAUTION: Sample hose lengths of more than 50 feet are not recommended for the GX-6000 because of flow rate reduction. Flow Chamber The flow chamber is on the back of the GX-6000 and is held in place by four Phillips screws. The flow chamber seals to the rubber sensor gasket which seals to the sensor face inside the GX-6000 and routes flow from the pump to the sensor and to the exhaust port (on the top of the GX-6000 case).

GX-6000 Operator’s Manual Sensors PID Sensor Two types of PID sensors can be used with the GX-6000, a low range (higher sensitivity) sensor and a high range (lower sensitivity) sensor (see Table 1 for specifications). The PID sensor is a cylindrical sensor with a diffusion opening on the front and 3 pins on the back. It is installed in a white housing that has three sockets on the bottom that mate with the GX-6000 instrument. The PID sensor must always be installed in the first smart sensor position which is located in the top left corner of the sensor block. The standard calibration for a PID channel is to isobutylene. A PID channel can be factory setup for and calibrated to other gases. Consult RKI Instruments, Inc. for other available PID configurations and to specify the desired PID configuration when a unit is ordered. Dummy Sensors This version of the GX-6000 has 5 dummy sensors installed in the unused sensor positions. Dummy sensors are factory installed. The flat top of the dummy sensor should face up and the bottom hollow side should face down. Inlet Filter Holder The filter holder is a clear plastic dome shaped piece on the top of the case. A male quick connect fitting is located on the inlet filter holder. This is the GX-6000’s inlet fitting. The filter holder may be removed by turning it counterclockwise and pulling it away from the case. One flat membrane disk hydrophobic filter, a wire mesh disk, and a rubber filter retaining gasket are held in place by the filter holder and are located in the bottom of the case chamber where the filter holder is installed. Batteries Three AA-size alkaline batteries or a rechargeable lithium ion battery pack (4.1 VDC) power the GX-6000. Instrument run time is dependent upon battery type. At 25°C the alkaline batteries last at least 20 hours and the lithium ion battery pack lasts at least 25 hours. The battery icon in the upper right of the LCD shows remaining battery life. When the GX-6000 detects a low battery voltage, a low battery warning is activated. When battery voltage is too low for Measuring Mode, the GX-6000 sounds a dead battery alarm. The alkaline batteries can be replaced by removing the battery cover on the back of the case. The lithium ion pack can be replaced by removing the entire battery pack. The battery pack release latch is located on the bottom of the

Included Accessories • 10 instrument. When viewing the instrument from the bottom with the LCD facing down, push the battery pack release latch toward the right to release the pack. The lithium ion battery pack can be recharged by placing the GX-6000 in its battery charging station or by placing the battery pack in the charging station. NOTE: Use of batteries or battery chargers not specified by RKI Instruments, Inc. will compromise the CSA classification and may void the warranty. See “Replacing or Recharging the Batteries” on page 89. WARNING: To prevent ignition of a hazardous atmosphere, batteries must only be changed or charged in an area known to be nonhazardous. AVERTISSEMENT:Pour éviter l’inflammation d’une atmosphère dangereuse, les batteries doivent uniquement être modifiés ou facturés dans une zone connue comme non dangereuse. Included Accessories Included accessories consist of the tapered rubber nozzle, belt clip, rubber boot, wrist strap, and the sample hose/probe. Tapered Rubber Nozzle A cone shaped 4 inch long rubber nozzle is included with the GX-6000 as standard. It can be installed on the inlet fitting by pushing the larger end over it. The smaller end can be inserted through a hole in a wall or some other access to an enclosed area to sample the environment. Belt Clip A belt clip can be mounted to the back of the case using 3 Phillips head screws. The belt clip allows the GX-6000 to be securely attached to a belt. Rubber Boot A red protective rubber boot can be installed over the GX-6000. Wrist Strap A wrist strap is included with the GX-6000 and can be attached to the right or left wrist strap installation feature on the GX-6000 case.

GX-6000 Operator’s Manual Sample Hose and Probe A 3 foot sample hose with an attached probe is standard with the GX-6000. When desired, the rubber nozzle may be removed and the sample hose and probe may be connected to the inlet fitting. Sample hose lengths are available from 3 feet to 50 feet (see “General Parts List” on page 113). The quick connect end of the sample hose connects to the inlet fitting of the GX-6000. The probe is integral with the hose and connects to it with a tube fitting. CAUTION: Sample hose lengths of more than 50 feet are not recommended for the GX-6000 because of flow rate reduction. The probe includes a replaceable particle filter and hydrophobic filter disk that prevent particulates and water from entering the GX-6000’s flow system. See “Replacing the Probe’s Particle Filter and Hydrophobic Filter Disk” on page 98 for instructions to replace the particle filter and hydrophobic filter disk. Figure 2: Sample Hose and Probe

Included Accessories • 12 Screen Protector The clear screen protector can be installed over the GX-6000’s LCD to prevent it from getting scratched. 1 . Remove the GX-6000’s rubber boot. 2 . Orient the GX-6000 so that the LCD is as horizontal as possible. 3 . Clean the LCD with rubbing alcohol. 4 . Place 1 drop of water in the center of the LCD. 5 . Grasp the tab at the top of the screen protector’s backing and pull it away from the screen protector. 6 . Use needle-nose pliers or tweezers to handle the screen protector. 7 . Align the top of the screen protector with the top of the “RKI GX-6000” logo. 8 . Press down on the center of the screen protector. Water should spread out along the entire surface of the screen protector between the screen protector and the LCD. Some of the water may come out the edges. 9 . If you are unhappy with the initial placement of the screen protector, lift the screen protector up from a corner. Quickly rearrange the screen protector and set it back down on the LCD. 10 . Use a small, stiff piece of plastic and, working your way out from center, remove any air bubbles. The screen protector may shift during this process so be sure to hold it securely with your other hand. 11 . Allow enough time for the water between the screen protector and the LCD to dry before handling the GX-6000. 12 . Reinstall the rubber boot.

GX-6000 Operator’s Manual Other Accessories Several other accessories are available for the GX-6000. This section describes the VOC zero filter and the DIN rail. Data logging accessories are briefly described in “Data Logging” on page 58. VOC Zero Filter The VOC zero filter scrubs out low levels of VOC gases using charcoal. A VOC zero filter is included as standard with GX-6000s that include a low range PID sensor since this sensor is more susceptible to low levels of VOCs. A VOC zero filter is not included with GX-6000s that include a high range PID sensor. Use the VOC zero filter when performing an air adjust on a PID sensor in an area that may have a low-level VOC background. The tubing stub on the end of the filter should be used to connect the filter to the inlet fitting or probe. Be sure the arrow on the filter is pointing toward the GX- 6000. Figure 3: VOC Zero Filter DIN Rail Mounting Assembly Two different DIN rail mounting assemblies are available for the GX-6000’s charger. Each assembly has two end clamps but one assembly is long enough to accommodate 1 charger and the other assembly is long enough to accommodate 4 chargers. Figure 4: DIN Rail Dimensions 1 . Use #10 screws to mount the DIN rail to the wall. VOC Zero Filter Tubing Stub 4" for 1-Charger Model 14" for 4-Charger Model Use #10 Screws to Mount 1.38"

Other Accessories • 14 2 . Install the charger(s) on the DIN rail. Seat the top of the DIN rail in the top slot on the back of the charger. Press the bottom of the charger toward the DIN rail until it locks into place. Figure 5: Installing a Charger on the DIN Rail 3 . Slide the charger(s) along the DIN rail into the desired position. 4 . Install the end clamps on the left and right side of the charger or bank of chargers to prevent sliding. Figure 6: Clamp Installation DIN Rail Charger Clamp DIN Rail

GX-6000 Operator’s Manual Figure 7: 1-Charger Installation Figure 8: 4-Charger Installation 5 . To remove any charger(s) from the DIN rail: a. Remove the clamps by pushing on the bottom of the clamp and pulling on the top of the clamp. b. Slide the charger(s) off the DIN rail. Figure 9: Charger Removal

Overview • 16 Chapter 3: Operation Overview This chapter explains how to use the GX-6000 to perform confined space entry monitoring or general area monitoring in Normal Mode. There are three operational modes in Normal Mode: Measuring Mode, Display Mode, and Calibration Mode. While in Normal Mode, the unit is normally operating in Measuring Mode. Display Mode and Calibration Mode are accessible from Measuring Mode. Display Mode is described in this chapter. Calibration Mode is described in “Chapter 4: Calibration Mode” on page 60. Start Up This section explains how to start up the GX-6000, get it ready for operation, and turn it off. Turning On the GX-6000 To illustrate certain functions, the following description of the GX-6000 start up sequence assumes that the following menu items in Maintenance Mode are turned on: LUNCH BREAK, CAL REMINDER, BUMP REMINDER, and ID DISPLAY. If any of these items are turned off, then the corresponding screens will not appear. The GX-6000 may be used with a sample hose and probe or with the tapered rubber nozzle. Determine which configuration works best for your application. NOTE: When the sample hose is not being used, its outgassing characteristics may result in a small buildup of gas to which the PID sensor will respond. If a sample hose has been sitting unused for a period of time, when that sample hose is connected to a GX-6000, the PID channel may temporarily show a reading. The reading will return to a fresh air reading after all of the built up gas has been drawn out of the sample hose. 1 . Connect the tapered rubber nozzle or the sample hose and probe to the GX-6000’s quick connect inlet fitting. 2 . Press and briefly hold down the POWER/ENTER button. Release the button when you hear a beep.

GX-6000 Operator’s Manual 3 . If LUNCH BREAK is turned on (see “Updating the Lunch Break Setting” on page 136), the Lunch Break Screen appears. The unit counts down from 5 seconds at the top of the screen. • To continue accumulating peak and time-weighted average (TWA) readings (high range PID only) from the last time the GX-6000 was used, press and release the POWER/ENTER button before the countdown reaches 0 or allow the countdown to reach 0. If you do not press the POWER/ENTER button within the 5 second countdown, the GX-6000 automatically resumes accumulating the peak and TWA readings. The GX-6000 will also continue to keep track of operating time including the operating time from the last time the GX-6000 was used. See “Time in Operation Screen” on page 46 for more information about how the GX-6000 tracks the operating time. The short-term exposure limit (STEL) reading is reset each time the GX-6000 is turned on. • To reset the accumulation of these measurements, press and release the DISP/LOCK button before the countdown reaches 0. 4:07 LUNCH BREAK 5 SEC YES:ENTER NO:DISP

Start Up • 18 4 . If CAL REMINDER is set to ON, the screen that appears next depends on how CAL EXPRD is set in Maintenance Mode (see “Updating the Calibration Expired Setting” on page 126). • If the unit is due for calibration and CAL EXPRD is set to CONFIRM TO USE, then the following screen displays and the buzzer sounds in a double pulsing pattern. To perform a calibration, press and release the POWER/ENTER button. The GX-6000 will enter Calibration Mode and the LCD will show the Calibration Mode main menu. See “Chapter 4: Calibration Mode” on page 60 for instructions to calibrate the GX-6000. When you are done with the calibration and exit Calibration Mode, the unit will begin the startup sequence. If the calibration was successful, the screen above will not appear again until the unit is due for calibration. If the calibration was not successful, the screen above will again appear in the startup sequence. To continue without performing a calibration, press and release the RESET button. • If the unit is due for calibration and CAL EXPRD is set to CANNOT USE, then the following screen displays and the buzzer sounds in a double pulsing pattern. 4:07 CAL DATE PAST CONFIRM TO USE CAL MODE : ENTER NO : RESET 4:07 CAL DATE PAST CANNOT USE CAL MODE : ENTER

GX-6000 Operator’s Manual The GX-6000 cannot be used until a successful calibration has been performed. Press and release the POWER/ENTER button to enter Calibration Mode. See “Chapter 4: Calibration Mode” on page 60 for instructions to calibrate the GX-6000. NOTE: In this situation, even if the User password function has been turned on, no password is required to perform a calibration. When you are done with the calibration and exit Calibration Mode, the unit will begin the startup sequence. If the calibration was successful, the screen above will not appear again until the unit is due for calibration. If the calibration was not successful, the screen above will again appear in the startup sequence. • If the unit is due for calibration and CAL EXPRD is set to NO EFFECT, then the following alert screen displays and the buzzer sounds in a double pulsing pattern. If you want to enter Calibration Mode, press and release the POWER/ENTER button. If you do not want to enter Calibration Mode, wait for the instrument to continue with its startup sequence. 4:07 CAL DATE PAST NO EFFECT CAL MODE : ENTER

Start Up • 20 5 . If BUMP REMINDER is set to ON (factory setting is OFF), the screen that appears next depends on how BUMP EXPRD is set in Maintenance Mode (see “Updating the Bump Expired Setting” on page 130). • If the unit is due for bump testing and BUMP EXPRD is set to CONFIRM TO USE, then the following screen displays and the buzzer sounds in a double pulsing pattern. To perform a bump test, press and release the POWER/ENTER button. The GX-6000 will enter Calibration Mode and the LCD will show the Calibration Mode main menu. See “Chapter 4: Calibration Mode” on page 60 for instructions to bump test the GX-6000. When you are done with the bump test and exit Calibration Mode, the unit will begin the startup sequence. If the bump test was successful, the screen above will not appear again until the unit is due for bump testing. If the bump test was not successful, the screen above will again appear in the startup sequence. To continue without performing a bump test, press and release the RESET button. NOTE: If BUMP DISP is set to OFF, the bump test menu item will not appear in Calibration Mode even though the instrument is prompting you to perform a bump test. A bump test can always be performed in Maintenance Mode, if necessary. 4:07 BUMP DATE PAST CONFIRM TO USE CAL MODE : ENTER NO : RESET

GX-6000 Operator’s Manual • If the unit is due for bump testing and BUMP EXPRD is set to CANNOT USE, then the following screen displays and the buzzer sounds in a double pulsing pattern. The GX-6000 cannot be used until a successful bump test has been performed. Press and release the POWER/ENTER button to enter Calibration Mode. See “Chapter 4: Calibration Mode” on page 60 for instructions to bump test the GX-6000. NOTE: In this situation, even if the User password function has been turned on, no password is required to perform a bump test. NOTE: If BUMP DISP is set to OFF, the bump test menu item will not appear in Calibration Mode even though the instrument is prompting you to perform a bump test. A bump test can always be performed in Maintenance Mode, if necessary. When you are done with the bump test and exit Calibration Mode, the unit will begin the startup sequence. If the bump test was successful, the screen above will not appear again until the unit is due for bump testing. If the bump test was not successful, the screen above will again appear in the startup sequence. 4:07 BUMP DATE PAST CANNOT USE CAL MODE : ENTER

Start Up • 22 • If the unit is due for bump testing and BUMP EXPRD is set to NO EFFECT, then the following alert screen displays and the buzzer sounds in a double pulsing pattern. If you want to enter Calibration Mode, press and release the POWER/ENTER button. If you do not want to enter Calibration Mode, wait for the instrument to continue with its startup sequence. NOTE: If CAL REMINDER or BUMP REMINDER or both are set to OFF, a WARM-UP screen will display before the warm up sequence continues. 6 . The Date/Time Screen appears for a few seconds. 4:07 BUMP DATE PAST NO EFFECT CAL MODE : ENTER 4:07 DATE 4/ 1/15 DD/MM/YYYY 4:07

GX-6000 Operator’s Manual 7 . The Battery Voltage Screen appears for a few seconds. 8 . The Active Gases Screen appears for a few seconds indicating the active channel and its target gas. 4:07 BATTERY VOLTAGE 4.5V BATTERY TYPE ALKALINE LATCHING GAS P ppm VOC GAS SMART 1 Isobutylene 10.6 eV

Start Up • 24 9 . The full scale value and the gas alarm setpoints are displayed by five screens in sequence: the Full Scale Screen, the Low Alarm Screen, High Alarm Screen, STEL Alarm Screen (high range PID only), and TWA Alarm Screen (high range PID only). Each screen remains on the LCD for three seconds. 10 . If ID DISPLAY is set to ON (see “Turning the User/Station ID Function On or Off” on page 135), the User ID Screen appears for a few seconds, followed by the Station ID Screen. If ID DISPLAY is set to OFF, these screens will not appear. F.S. VOC P ppm 6000 AL1 VOC P ppm 400.0 AL2 VOC P ppm 1000 STEL VOC P ppm 60.0 TWA VOC P ppm 42.0 4:07 USER ID KIMBERLY 4:07 STATION ID TANK 5

GX-6000 Operator’s Manual 11 . If the PID sensor fails during start up, the screen indicates the failure and the buzzer sounds a double pulsing tone once per second. The GX-6000 cannot be used if the PID sensor fails. Turn the instrument off and replace the sensor. 12 . The GX-6000 is now monitoring for gas in Measuring Mode. The Measuring Mode Screen appears displaying the current gas reading. Performing a Demand Zero Before using the GX-6000, it is recommended to set the fresh air reading by performing a demand zero. This will set the PID channel to 0 ppm. 1 . Find a fresh-air environment. This is an environment free of toxic or combustible gases and of normal oxygen content (20.9%). 2 . Turn on the unit as described above in “Turning On the GX-6000”. 3 . If you suspect any low-level VOC background in the area, attach the tubing stub of the VOC zero filter to the inlet fitting or probe and let the instrument draw through it for 1 minute before continuing. 4 . Press and hold the ▲ AIR button. The LCD prompts you to continue holding the ▲ AIR button and the buzzer will pulse while you hold the button. SENSOR VOC P ppm FAIL 4:07 VOC ppm 0.0

Measuring Mode, Normal Operation • 26 5 . Continue to hold the ▲ AIR button until the LCD prompts you to release it. The GX-6000 will set the fresh air reading. Start up is complete and the unit is now ready for monitoring. Turning Off the GX-6000 1 . Press and hold the POWER/ENTER button. 2 . TURN OFF will appear on the display and the buzzer will pulse for about five seconds. 3 . Release the button when TURN OFF disappears from the display. Measuring Mode, Normal Operation When the GX-6000 completes its startup sequence, it is in Measuring Mode. In Measuring Mode the GX-6000 continuously monitors the sampled atmosphere and displays the gas concentration present. In a low-light environment, press and release any button to turn on the display backlight. See “Updating the Backlight Time Setting” on page 135 to program backlight duration. If CONFIRMATION is set to ON in the Maintenance Mode menu (see “Updating the Confirmation Alert Setting” on page 137), the GX-6000 beeps periodically to confirm that it’s operating. Monitoring an Area 1 . Start up the GX-6000 as described above in “Start Up” on page 16. It is now in Measuring Mode. 2 . Take the GX-6000 to the monitoring area. 4:07 VOC ppm 0.0

GX-6000 Operator’s Manual 3 . Put the probe tip in the area to be monitored. NOTE: If the particle filter or hydrophobic filter become dirty or clogged, replace them. If water enters the probe, dry out or replace the particle filter (if installed) and shake any water out of the probe and off of the hydrophobic filter. If you notice that water has entered the flow system through the probe, replace the probe’s hydrophobic filter. See “Replacing the Probe’s Particle Filter and Hydrophobic Filter Disk” on page 98 for instructions to replace the particle filter and the hydrophobic filter. 4 . Wait 10 - 15 seconds and observe the display for gas reading. If a reading is observed, allow the reading to stabilize to determine the gas concentration present. NOTE: Response time increases with the length of the sample hose. Long sample hoses will require more time to show a response at the GX-6000. The maximum sample hose length recommended for the GX-6000 is 50 feet. Consult RKI Instruments, Inc. for longer sample hose lengths. 5 . Keep the following in mind: • The PID channel will indicate an upscale reading if one of a variety of combustible gases is present. If %LEL concentrations of one of these combustible gases is present, the PID channel may indicate an overscale reading. • If concentrations of methane greater than 10% LEL are present in the monitoring environment, the PID channel’s reading will be suppressed. • The PID sensor will also respond to H2S and NH3. If H2S or NH3 is present, the PID channel may indicate an upscale reading depending on the concentration present. 6 . If a gas alarm occurs, take appropriate action. See “Responding to Alarms” on page 33.

Measuring Mode, Normal Operation • 28 Using Optional Sample Hoses The standard sample hose for the GX-6000 is 3 feet long. Optional samples hoses and probes with longer hoses are available from 5 - 50 feet in 5 foot increments (see “General Parts List” on page 113). If you are considering using a hose and probe with a longer hose, keep in mind that a longer hose will increase the GX-6000’s response time and the flowrate may decrease close to the low flow alarm point. CAUTION: Sample hose lengths of more than 50 feet are not recommended for the GX-6000 because of flow rate reduction and increased response time. Consult RKI Instruments, Inc. for hose lengths longer than 50 feet. The chart below illustrates how response time is affected by the sample hose length. Table 4: GX-6000 Response Time vs. Sample Hose Length Hose Used Typical Time to 90% of Response (T90) Probe & 3 Foot Hose (standard) 10 seconds Probe & 10 Foot Hose 15 seconds Probe & 30 Foot Hose 30 seconds Probe & 50 Foot Hose 40 seconds

GX-6000 Operator’s Manual Snap Log Mode The snap logging function in Snap Log Mode allows the user to record data at a specific time and have it saved to the data logger. The data is assigned a snap log ID and is saved with the station ID that was in use when the data was taken. To enter Snap Log Mode and record snap log data: 1 . While the unit is in Measuring Mode, press and hold the SHIFT ▼ (PANIC) button, then press and hold the ▲ AIR button and hold both until you hear a beep. The unit will cycle through the following screens. The first screen displays what snap log ID will be given to this particular set of data and that you should press the POWER ENTER button to save a set of snap log data. The snap log ID number increases sequentially with each set of snap log data taken. The second screen displays what Station ID will be associated with this snap log and that you should press the DISP/LOCK button to exit Snap Log Mode without saving a set of snap log data. The third screen displays the year, month, day, and time of REC DATA REC. DATA NUMBER 001 YES : ENTER REC DATA REC. DATA STATION ID TANK 5 NO : DISP REC DATA REC. DATA 05/20/2015 MM/DD/YYYY 3:38 REC DATA VOC ppm 0.0

Measuring Mode, Normal Operation • 30 the snap log. The fourth screen displays the current gas reading. NOTE: If the GX-6000 detects an alarm condition while in Snap Log Mode, it will automatically exit Snap Log Mode and return to Measuring Mode. You may then reenter Snap Log Mode and take snap logs while the instrument is still in alarm. 2 . You can change the Station ID to be used with the snap log by pressing the SHIFT ▼ (PANIC) button and then pressing the DISP/LOCK button. The Station ID Select Screen will appear and the current Station ID will be flashing. 3 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to scroll to the desired Station ID, then press and release the POWER/ENTER button to return to the Snap Logging Screen sequence. To return to the Snap Logging Screen sequence without changing the Station ID, press and release the DISP/LOCK button. 4 . To take a snap log of the current gas reading, press and release the POWER/ENTER button. The unit will display SAVED along the bottom of the screen before returning to the Snap Logging Screen sequence. To exit Snap Log Mode without taking a snap log or when you are finished recording snap logs, press and release the DISP/LOCK button. The unit will immediately return to the Measuring Mode Screen. The data recorded in Snap Log Mode can be viewed in Display Mode. See “Viewing Snap Logger Data” on page 54 for more information. 4:07 STATION ID VALVE 3

GX-6000 Operator’s Manual Measuring Mode, Alarms This section covers alarm indications in Measuring Mode. It also describes how to reset the GX-6000 after an alarm has occurred and how to respond to an alarm condition. NOTE: False alarms may be caused by radio frequency (RF) or electromagnetic (EMI) interference. Keep the GX-6000 away from RF and EMI sources such as radio transmitters or large motors. Alarm Indications The GX-6000 buzzer will sound an alarm, the LEDs will flash, and the vibrator will pulse when any sort of alarm condition or failure is encountered. NOTE: If an alarm condition occurs while you are in Display Mode, the GX-6000 will automatically bring up the alarm screen instead. The table below summarizes the types of alarms produced by the GX-6000 and their indications. None of the Man Down alarm indications will happen if MAN DOWN is set to OFF in Maintenance Mode (factory setting). Table 5: Alarm Types and Indications Alarm Type Visual Indications Other Indications Low Alarm Concentration of gas rises above the Low Alarm setting. • Display alternates between gas reading and AL1 • Alarm LED arrays flash in circle sequence once per second • Backlight turns on • High-low tone sounding twice per second • Vibrator pulses once per second High Alarm Concentration of gas rises above the High Alarm setting. • Display alternates between gas reading and AL2 • Alarm LED arrays flash in circle sequence twice per second • Backlight turns on • High-low tone sounding four times per second • Vibrator pulses twice per second

Measuring Mode, Alarms • 32 TWA or STEL Concentration of high range VOC rises above the TWA or STEL alarm setting. • Display alternates between gas reading and TWA or STEL • Alarm LED arrays flash in circle sequence once per second • Backlight turns on • High-low tone sounding twice per second • Vibrator pulses once per second Over Range • Display alternates between OVER displayed where the gas reading normally is and OVER displayed where the reading units normally are • Alarm LED arrays flash in circle sequence twice per second • Backlight turns on • High-low tone sounding four times per second • Vibrator pulses twice per second Low Flow • The display indicates FAIL LOW FLOW • Alarm LED arrays flash once per second • Backlight turns on Double pulsing tone once per second Low Battery Warning • The last bar in the battery icon disappears and the battery icon starts flashing None Dead Battery Alarm • Gas reading disappears and FAIL BATTERY appears at the top of the screen • Alarm LED arrays flash once per second Double pulsing tone once per second Sensor Failure • SENSOR appears at the top of the screen and FAIL appears under the gas name. • Alarm LED arrays flash once per second Double pulsing tone once per second Clock Failure • FAIL CLOCK appears at the top of the screen • Alarm LED arrays flash once per second Double pulsing tone once per second System Failure • FAIL SYSTEM appears at the top of the screen and an error code displays below it • Alarm LED arrays flash once per second Double pulsing tone once per second Table 5: Alarm Types and Indications Alarm Type Visual Indications Other Indications

GX-6000 Operator’s Manual Responding to Alarms This section describes response to gas, over range, battery, sensor failure, clock failure, system failure, man down, and panic alarms. Responding to Gas Alarms 1 . Determine which gas alarm has been activated. 2 . Follow your established procedure for an increasing gas condition. Man Down Warning 1 The WARNING 1 TIME defined in Maintenance Mode has passed since the instrument detected movement. • Alarm LED arrays flash once per second Single pulsing tone once per second Man Down Warning 2 The WARNING 2 TIME defined in Maintenance Mode has passed since the instrument detected movement. • Alarm LED arrays flash twice per second Single pulsing tone twice per second Man Down Alarm The ALARM TIME defined in Maintenance Mode has passed since the instrument detected movement. • MAN DOWN flashes at top of screen in place of time • Alarm LED arrays flash in circle sequence twice per second • High-low tone sounding twice per second • Vibrator pulses twice per second Panic User presses and holds the SHIFT ▼ (PANIC) button. • Screen unaffected for 5 seconds before alarm starts • MAN DOWN flashes at top of screen in place of time • Alarm LED arrays flash in circle sequence twice per second • Backlight turns on • Single pulsing tone twice per second for 5 seconds before alarm starts • High-low tone sounding twice per second • Vibrator pulses twice per second Table 5: Alarm Types and Indications Alarm Type Visual Indications Other Indications

Measuring Mode, Alarms • 34 3 . Reset or silence the alarm as necessary or allowed. Table 6 below summarizes resetting and silencing alarms for all ALARM LATCHING and ALARM SILENCE combinations that are possible. See “Updating the Alarm Latching Setting” on page 133 and “Updating the Alarm Silence Setting” on page 134 for further descriptions of these parameters. Responding to an Over Range Alarm WARNING: An over range condition may indicate an extreme combustible gas concentration. Confirm a normal condition with a different GX-6000 or with another gas detecting device. CAUTION: A high off-scale reading may indicate an explosive concentration. PRUDENCE:Des lectures élevées hors échelle peuvent indiquer une concentration explosive. 1 . Follow your established procedure for an extreme gas condition. 2 . Reset the alarm using the RESET button once the alarm condition has cleared. Table 6: Resetting and Silencing Alarms ALARM LATCHING: LATCHING ALARM LATCHING: SELF RESET ALARM SILENCE: ON (factory setting) • Press and release the RESET button to silence the buzzer. • If the gas concentration was still above the alarm level when the button was pressed, the LED arrays continue to flash, the vibrator continues to pulse, and the GX-6000 continues to display the current alarm level. • The gas reading must fall below an alarm setting before you can reset the alarm, the LEDs, and the vibrator using the RESET button. • Press and release the RESET button to silence the buzzer. • The RESET button will not reset the alarm. • Alarm, LEDs, and vibrator will automatically reset when gas reading falls below an alarm setpoint. ALARM SILENCE: OFF • RESET button will not silence buzzer. • The gas reading must fall below an alarm setting before you can reset the alarm condition using the RESET button. • RESET button will not silence or reset alarm. • Alarm condition will automatically reset when gas reading falls below an alarm setpoint.

GX-6000 Operator’s Manual 3 . Calibrate the GX-6000 as described in “Chapter 4: Calibration Mode” on page 60. 4 . If the over range condition continues or if you are not able to successfully calibrate the unit, you may need to replace the sensor. 5 . If the over range condition continues after you have replaced the sensor, contact RKI Instruments, Inc. for further instructions. Responding to Battery Alarms WARNING: The GX-6000 is not operational as a gas monitoring device during a dead battery alarm. Take the GX-6000 to a non- hazardous area and replace or recharge the batteries as described in “Replacing or Recharging the Batteries” on page 89. The GX-6000 is fully functional during a low battery warning. However, only a limited amount of operating time remains, approximately 1 - 2 hours. The amount of time depends on how often the LCD backlight is used and how often the unit is responding to alarm conditions. Recharge the Li-ion battery pack or replace the alkaline batteries as soon as possible as described in “Replacing or Recharging the Batteries” on page 89. NOTE: Alarms and the LCD back light consume battery power and reduce the amount of operating time remaining. Responding to a Sensor Failure Alarm 1 . Try calibrating the sensor as described in “Chapter 4: Calibration Mode” on page 60 before replacing it. 2 . If the sensor failure continues, replace the sensor as described in “Replacing the PID Sensor” on page 100. 3 . If the sensor failure condition continues after you have replaced the sensor, contact RKI Instruments, Inc. for further instructions.

Measuring Mode, Alarms • 36 Responding to Clock Failure Alarms A clock failure alarm occurs if the unit’s internal clock malfunctions. 1 . Press and release the RESET button to continue into Measuring Mode. CAUTION: There will be no datalogging function if you operate the instrument after a clock failure. 2 . Attempt to change the date using the DATE menu item in Maintenance Mode. See “Setting the Date and Time” on page 123. 3 . If the date cannot be set correctly, contact RKI Instruments, Inc. as soon as possible. Responding to System Failure Alarms 1 . If a system failure occurs, the system failure screen will display an error code as shown below: 2 . The error code meanings are shown in the table below: Table 7: Error Code Explanation Error Code Explanation 000 ROM failure 4:07 FAIL CLOCK 4:07 FAIL SYSTEM 0 2 2

GX-6000 Operator’s Manual 3 . If the error code is anything but 022 as shown above, the instrument cannot be used. Contact RKI Instruments, Inc. as soon as possible. If the error code is 022, you may press and release the RESET button to continue into Measuring Mode if the instrument must be used temporarily. CAUTION: There will be no datalogging function if you operate the instrument after a 022 system failure. Contact RKI Instruments, Inc. as soon as possible. Responding to a Man Down Warning 1 and Warning 2 The Man Down Warning 1 and Warning 2 alarms occur after the WARNING 1 TIME and WARNING 2 TIME, respectively, has passed since the last movement of the instrument. See “Updating the WARNING 1 TIME Setting” on page 140 and “Updating the WARNING 2 TIME Setting” on page 140 for instructions to change these values. 1 . Follow your established procedure for a man down warning. 2 . To silence the alarm and reset the Man Down clock, move the instrument or press and release the RESET button. Responding to a Man Down Alarm The Man Down Alarm alarms occur after the ALARM TIME has passed since the last movement of the instrument. See “Updating the ALARM TIME Setting” on page 141 for instructions to change this value. 1 . Follow your established procedure for a man down alarm. 2 . To silence the alarm and reset the Man Down clock, press and release the RESET button. Moving the instrument will not reset the alarm or Man Down clock. Responding to a Panic Alarm If the user is in a dangerous situation or feels that others must be alerted to any sort of problem, holding the SHIFT ▼ (PANIC) button will initiate a panic alarm. 1 . Press and release the RESET button to silence and reset the alarm. 010 RAM failure 021 FRAM failure 022 FLASH memory failure Table 7: Error Code Explanation Error Code Explanation

Display Mode • 38 Display Mode Two other operating modes are accessible when the GX-6000 is in Measuring Mode. They are Display Mode and Calibration Mode. This section describes using the GX-6000 in Display Mode. See Table 8 below for a list of Display Mode’s menu items, a short description of each item, and the page number for further description. Table 8: Display Mode Items Menu Item (page number) Description SELECT PID LIST (pg.39) Define the PID channel’s gas name PEAK (pg.42) View and clear the peak reading STEL (pg.43) View the STEL reading (high range PID only) TWA (pg.43) View the TWA reading (high range PID only) ALARM POINTS (pg.44) View the alarm points OPERATION TIME (pg.46) View the time in operation DATE AND BATTERY (pg.46) View the date/time, battery voltage, and battery type LOG REMAIN (pg.47) View the log time remaining LOG CLEAR (pg.47) Clear the log data PUMP OFF (pg.49) Turn the pump on or off (if the PUMP OFF DISP item in Maintenance Mode is set to ON) USER ID (pg.50) Select the user ID (if the ID DISPLAY item in Maintenance Mode is set to ON) STATION ID (pg.52) Select the station ID (if the ID DISPLAY item in Maintenance Mode is set to ON) REC. DATA DISP (pg.54) View snap logger data PEAK BAR (pg.55) Turn the peak bar function on or off GAS DISP (pg.56) N/A INVERT SELECT (pg.56) Turn the LCD flip function on or off LCD BACKGROUND (pg.57) Reverse the black/white of the LCD LANGUAGE (pg.57) Change the instrument’s language back to English (only appears if the language has been changed to something other than English)

GX-6000 Operator’s Manual Tips for Using Display Mode • To enter Display Mode and scroll from one menu item to the next or skip an item when a question is asked, press and release the DISP/LOCK button. • To enter an item, press and release the POWER/ENTER button. • To change a flashing parameter, use either the ▲ AIR button or SHIFT ▼ (PANIC) button. • To return to Measuring Mode from the top level of any menu item, press and release the RESET button. NOTE: With the exception of the Pump Off Screen, each screen displays for 20 seconds. If you do not press a button within 20 seconds, the GX-6000 automatically returns to Measuring Mode. If the Pump Off Screen is used to turn the instrument’s pump off, the Pump Off Screen will display until you turn the pump back on. PID Gas Name Screen The standard PID channel is configured for and calibrated to isobutylene. If calibration to a different gas is required for an application, the PID channel can also be configured for other gases. If you configure the instrument for another gas, the instrument will retain that configuration until you change it again. Turning the instrument off and on does not change this setting. 1 . With the PID Gas Name Screen displayed, press and release the POWER/ENTER button. The top level of the PID Gas Name List will be displayed and the cursor will be next to the letter corresponding to the first letter of the current setting. In the example below, the PID channel is configured for isobutylene so the cursor is next to “I”. Each letter has a list of gas names behind it. At the top of the letter list, there is a User List item and a Recent List item. The User List can hold 30 gas names and DISP SELECT PID LIST PID SET TO Isobutylene 10.6 eV CHANGE :ENTER KEEP :DISP EXIT :RESET

Display Mode • 40 the GX-6000 Data Logger Management Program is required to configure this list. The Recent List can hold up to 8 gas names and is made up of the 8 most recently used gas names. The Recent List is not user editable. 2 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to scroll through the letter and list options. To view the gas names behind a letter, User List, or Recent List, press and release the POWER/ENTER button when the cursor is next to the desired letter. 3 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to scroll through the gas names. DISP SELECT PID 11/24 F - G - H - I- J - K - L - M - DISP I - I s o b u t a n o l I s o b u t y l a c e t a t I s o b u t y l a c r y l a I s o b ut y l e n e I s o b u t y l e n e epo I s o b u ty r a l d e hy d I s o b u t y r ic a c i d I s o d e c a n o l

GX-6000 Operator’s Manual 4 . To view the information for each gas name, press and release the POWER/ENTER button when the cursor is next to the desired gas name. The number in the upper left corner is the gas’s number in relation to all other gas names that are stored in the GX-6000. The chemical formula is displayed next to the gas number. The response factor relative to isobutylene is listed on the second line. The gas name is listed on the third line. 5 . To select a gas name, press and release the POWER/ENTER button while you are viewing the parameters. The selection will be in effect until you change it again. To return to the gas name list without saving any changes, press and release the DISP/LOCK button. 6 . To return to the top level PID Gas Name List that has all of the letter choices, press and release the DISP/LOCK button. 7 . To return to the PID Gas Name Screen, press and release the DISP/ LOCK button one more time. DISP I - 17/46 #396 C4H8 VOC RF 1.00 I s o b ut y l e n e

Display Mode • 42 Peak Screen The peak screen displays the highest concentration detected since the GX-6000 was turned on. The peak reading is are stored in the GX-6000’s memory until a higher level is detected, the peak reading is cleared, or the GX-6000 is turned off. The lunch break feature enables the GX-6000 to save the peak reading when it is turned off so it can continue them when it is turned on again. See “Turning On the GX-6000” on page 16. To clear the peak reading, do the following: 1 . With the Peak Screen displayed, press and hold the RESET button. The following screen sequence will occur. 2 . Release the RESET button. The peak reading will be reset and the unit will return to the Peak Screen. If you do not want to clear the peak reading, release the RESET button before the above screen sequence occurs. The unit will return to the Peak Screen. PEAK VOC ppm 4300 PEAK PEAK CLEAR HOLD PEAK PEAK CLEAR RELEASE

GX-6000 Operator’s Manual STEL Screen The STEL Screen displays the short term exposure limit (STEL) reading (high range PID only). The STEL reading is the average reading over the last 15 minutes. TWA Screen The TWA Screen displays the time weighted average (TWA) reading (high range PID only). The TWA reading is the average reading over the last 8 hours. If 8 hours have not elapsed since the last time the TWA reading was cleared, the average is still calculated over 8 hours. The missing time is assigned a 0 value for readings. If LUNCH BREAK is set to OFF, the TWA is cleared when the GX-6000 is turned off. If LUNCH BREAK is set to ON, the GX-6000 will remember the TWA reading when it is turned off so it can continue it when it is turned on again. See “Turning On the GX-6000” on page 16. STEL VOC ppm 10.0 TWA VOC ppm 5.0

Display Mode • 44 View Alarm Settings Screen The View Alarm Settings Screen gives you the option to view the gas alarm settings. To view the gas alarm settings, do the following: 1 . With the View Alarm Settings Screen displayed, press and release the POWER/ENTER button. The Full Scale Settings screen will appear. Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to scroll through the Warning, Alarm, STEL (high range PID only), and TWA (high range PID only) settings. DISP ALARM POINTS YES :ENTER NO :DISP EXIT :RESET

GX-6000 Operator’s Manual 2 . Pressing and releasing the POWER/ENTER button while in a settings screen will cause the instrument to simulate that condition. The buzzer, LED’s, and vibration will activate. Press and release the POWER/ ENTER button again to stop the simulated alarm. 3 . Press and release the DISP/LOCK button to return to the View Alarm Settings Screen. ▲ AIR ▲ AIR ▲ AIR ▲ AIR ▲ AIR SHIFT ▼ (PANIC) F.S. VOC ppm 6000 AL1 VOC ppm 400.0 AL2 VOC ppm 1000 STEL VOC ppm 60.0 TWA VOC ppm 42.0

Display Mode • 46 Time in Operation Screen The Time In Operation Screen displays the length of time since the GX-6000 was turned on if the lunch break feature is turned off. With LUNCH BREAK set to OFF, the time in operation is reset when the GX-6000 is turned off. See “Updating the Lunch Break Setting” on page 136 for a description of the lunch break feature. If LUNCH BREAK is set to ON, the time in operation will only be reset if you do not choose to resume the peak and TWA measurements when the GX-6000 is turned on in the Lunch Break Screen described in Step 3 on page 17 in “Turning On the GX-6000”. If you choose to resume the peak and TWA measurements during startup, the GX-6000 will include the time in operation when the unit was last turned off in the current time in operation. Date/Time, Battery Voltage Screen The Battery Voltage Screen displays the current battery voltage. Fully charged alkaline batteries typically indicate around 6.0 volts; a fully charged Li-ion battery pack typically indicate 4.1 volts. This screen also displays during the startup sequence. DISP OPERATION TIME 0:02 DISP DATE AND BATTERY 5/12/2015 MM/DD/YYYY 1:57 4.1V BATTERY TYPE ALKALINE

GX-6000 Operator’s Manual Log Time Remaining Screen The Data Logging screen displays the time remaining until the data logger memory is full. LOG CLEAR Screen CAUTION: Once you clear the data logger, you cannot retrieve any data previously stored in the data logger. The LOG CLEAR screen asks if you want to clear the data logger memory. To continue through Display Mode without clearing the log data, press and release the DISP/LOCK button. DISP LOG REMAIN 129 HOUR DISP LOG CLEAR YES :ENTER NO :DISP EXIT :RESET

Display Mode • 48 To clear the data logger memory, do the following: 1 . With the LOG CLEAR Screen displayed, press and release the POWER/ENTER button. The following screen appears asking you to confirm that you want to clear the data logger memory. 2 . If you do not want to clear the data logger memory, press and release the DISP/LOCK button. The unit will return to the LOG CLEAR screen in Display Mode. 3 . If you want to clear the data logger memory, press and release the POWER/ENTER button. The unit will display the following screen as it clears the data. 4 . When the instrument has cleared the data, it will return to the LOG CLEAR screen in Display Mode. DISP LOG CLEAR YES : ENTER NO : DISP CONFIRM ? DISP LOG CLEAR CLEAR

GX-6000 Operator’s Manual Pump Off Screen WARNING: The GX-6000 is not a gas monitoring device while the pump is off. NOTE: The item appears in Display Mode only if the PUMP OFF DISP menu item in Maintenance Mode is turned ON. The factory setting for PUMP OFF DISP is OFF. This feature can be used to conserve battery life if there is a significant period of time until the next gas monitoring task, but you do not want to wait for the warm-up sequence to complete if you turn the instrument off and on again. 1 . In this screen, press and release the POWER/ENTER button to turn the pump off. The fan symbol in the upper right corner will disappear. Once the pump is off, you cannot exit this screen and return to Measuring Mode or continue in Display Mode until you turn the pump back on. 2 . To turn the pump back on and continue in Display Mode or return to Measuring Mode, press and release the DISP/LOCK button. DISP PUMP OFF YES :ENTER NO :DISP EXIT :RESET 1:44 PUMP OFF OFF

Display Mode • 50 Select User ID Screen This screen only appears in Display Mode if the ID DISPLAY item in Maintenance Mode is set to ON. Use this screen to select a user ID from the user ID list in the GX-6000’s memory. The current user ID is displayed. A user ID can be up to 16 characters long. The GX-6000 can store up to 128 user IDs. The user ID provides a way to identify the GX-6000 user during a data logging session. If the user ID is changed during an operating session, a new data session is initiated with the new user ID attached to it. This allows you to change the user ID during operation and have each user ID that was used during an operating session saved for the corresponding data. See the GX-6000 Data Logger Management Program Operator’s Manual for a detailed description of data logging and the user ID. The user ID list cannot be edited using the GX-6000 user interface. The GX-6000 Maintenance Data Loader Program is required to define or change user IDs in the user ID list. For a detailed description of editing the list of user IDs stored in the GX-6000, see the GX-6000 Maintenance Data Loader Program Operator’s Manual. DISP USER ID KIMBERLY

GX-6000 Operator’s Manual To select a different user ID: 1 . With the Select User ID Screen displayed, press and release the POWER/ENTER button. The current user ID will be displayed and it will be flashing. 2 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to scroll through the available user IDs. The list will wrap around if you get to the top or bottom. Any of the user IDs in the list that have not been changed from the factory setting will be shown as USER_ID_XXX where the “XXX” is a number from 001 to 128. 3 . When the desired user ID is displayed, press and release the POWER/ ENTER button. NOTE: To exit the selection screen without saving a change, press and release the DISP/LOCK button. You will return to the Select User ID screen without saving the user ID change. 4 . The unit will save the selected user ID as the current one and will return you to the Select User ID Screen. DISP USER ID KIMBERLY

Display Mode • 52 Select Station ID Screen This screen only appears in Display Mode if the ID DISPLAY item in Maintenance Mode is set to ON. Use this screen to select a station ID from the station ID list in the GX-6000’s memory. The current station ID is displayed. A station ID can be up to 16 characters long. The GX-6000 can store up to 128 station IDs. The station ID provides a way to identify a location where monitoring was done during a data logging session. If the station ID is changed during an operating session, a new data session is initiated with the new station ID attached to it. This allows you to change the station ID during operation and have each station ID that was used during an operating session saved for the corresponding data. See the GX-6000 Data Logger Management Program Operator’s Manual for a detailed description of data logging and the station ID. The station ID list cannot be edited using the GX-6000 user interface. The GX-6000 Maintenance Data Loader Program is required to define or change station IDs in the station ID list. For a detailed description of editing the list of station IDs stored in the GX-6000, see the GX-6000 Maintenance Data Loader Program Operator’s Manual. DISP STATION ID TANK 5

GX-6000 Operator’s Manual To select a different station ID: 1 . With the Select Station ID Screen displayed, press and release the POWER/ENTER button. The current user ID will be displayed and it will be flashing. 2 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to scroll through the available station IDs. The list will wrap around if you get to the top or bottom. Any of the station IDs in the list that have not been changed from the factory setting will be shown as STATION_ID_XXX where the “XXX” is a number from 001 to 128. 3 . When the desired station ID is displayed, press and release the POWER ENTER button. NOTE: To exit the selection screen without saving a change, press and release the DISP/LOCK button. You will return to the Select Station ID screen without saving the station ID change. 4 . The unit will save the selected station ID as the current one and return you to the Select Station ID Screen. DISP STATION ID TANK 5

Display Mode • 54 Viewing Snap Logger Data The Snap Logging Screen allows you to view data from previous snap logs. For information on how to use the snap logging feature, see “Snap Log Mode” on page 29. 1 . With the snap logging screen displayed, press and release the POWER/ ENTER button. The screen that appears will depend on whether or not any snap logs have been taken. 2 . If snap logs have been taken, the screen indicates the year, month, day, and time that the most recent snap log was taken. The number near the bottom of the screen indicates the snap log ID number. The first snap log that is taken is given an ID of 001. The next snap log ID is 002. The ID number increases sequentially with each set of snap log data. The last line of the screen indicates the Station ID that was used for the snap log. 3 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to scroll through different snap log IDs. DISP REC. DATA DISP YES :ENTER NO :DISP EXIT :RESET REC DATA REC. DATA NO DATA REC DATA DATE 5/20/2015 MM/DD/YYYY 3:40 NUMBER 001 TANK 5 No snap logs taken Snap logs taken

GX-6000 Operator’s Manual 4 . To view the data in a snap log ID, press and release the POWER/ENTER button. The gas reading that was taken during the snap log is displayed. You can use the ▲ AIR and SHIFT ▼ (PANIC) buttons to scroll through the different snap logs. The gas reading will change as you view different snap log data but the snap log ID is not visible from this screen. To scroll through the data by viewing the snap log ID number, press and release POWER/ENTER. 5 . To return to the Snap Logging Screen, press and release the DISP/LOCK button. Peak Bar Screen The Peak Bar Screen allows you to turn the peak bar on or off. If the function is turned on, the peak bar appears along the right side of the gas reading in Measuring Mode and on the Peak Screen in Display Mode. It shows the peak reading in bar graph format. 1 . With the Peak Bar Screen displayed, press and release the POWER/ ENTER button. The current setting will be displayed. 2 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to display the desired setting. REC DATA VOC ppm 0.0 DISP PEAK BAR YES :ENTER NO :DISP EXIT :RESET

Display Mode • 56 3 . Press and release the POWER/ENTER button to save the setting and return to the Peak Bar Screen. To return to the Peak Bar Screen without saving any changes, press and release the DISP/LOCK button. Gas Display Screen This menu item does not apply to this version of the GX-6000. LCD Flip Screen If INVERT SELECT is set to ON, the instrument’s LCD will automatically flip if the instrument is turned upside down. This allows for the LCD to be read with the instrument right side up or upside down. If desired, holding down the DISP/LOCK button will lock the screen in its current position and keep it from rotating. A LOCK symbol will flash at the top of the screen to indicate that the LCD’s position is fixed. To unlock the LCD, hold the DISP/ LOCK button until the LOCK symbol disappears. NOTE: Even if INVERT SELECT is set to ON, the screens in Calibration Mode, User Mode, and Maintenance Mode will not flip if the instrument is turned upside down. If INVERT SELECT is set to OFF, the instrument’s LCD will not flip and can only be read when the instrument is right side up. A LOCK symbol will appear at the top of the screen to indicate that the LCD’s position is fixed. 1 . With the Gas Display Screen showing, press and release the POWER/ ENTER button. The current setting will be displayed. 2 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to display the desired setting. 3 . Press and release the POWER/ENTER button to return to the LCD Flip Screen. To return to the LCD Flip Screen without saving any changes, press and release the DISP/LOCK button. DISP INVERT SELECT YES :ENTER NO :DISP EXIT :RESET

GX-6000 Operator’s Manual LCD Background Color Flip With LCD BACKGROUND set to ON, the LCD colors will flip. The background will be black instead of white and the text will be white instead of black. With LCD BACKGROUND set to OFF (factory setting), the LCD background will be white and the LCD text will be black. 1 . With the LCD Background Flip Screen showing, press and release the POWER/ENTER button. The current setting will be displayed. 2 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to display the desired setting. 3 . Press and release the POWER/ENTER button to return to the LCD Background Flip Screen. To return to the LCD Background Flip Screen without saving any changes, press and release the DISP/LOCK button. Language Screen If the instrument’s language is changed to something other than English, the Language Screen will appear in Display Mode. The Language Screen will not appear if the instrument’s language is set to English. The Language Screen allows the user to change the instrument’s language back to English. DISP LCD BACKGROUND YES :ENTER NO :DISP EXIT :RESET DISP LANGUAGE CHANGE TO ENGLISH YES :ENTER NO :DISP EXIT :RESET

Data Logging • 58 To change the language back to English, do the following: 1 . With the Language Screen showing, press and release the POWER/ ENTER button. The following screen will appear asking you to confirm that you want to change the language back to English. 2 . Press and release the POWER/ENTER button again to confirm the change. To return to the Language Screen without changing the instrument’s language to English, press and release the DISP/LOCK button. Data Logging The GX-6000 features the ability to log data to its internal memory and download it to a computer via the infrared communications port on the front of the unit. It logs gas readings in Measuring Mode, alarm data, and calibration data. NOTE: The data logging function is separate from the snap logging function. For a description of the snap logging function, see “Snap Log Mode” on page 29. To utilize the GX-6000’s downloading capability, you will need the GX-6000 Data Logger Management Program and a computer with an infrared port or a USB port that runs one of the following operating systems: Windows® 7, Windows® 8, or Windows® 10. If your computer has an infrared port, then no additional accessories are needed to download data from the GX-6000. If your computer does not have an infrared port but does have a USB port, a USB/IrDA adapter cable can be used to download data from the GX-6000 using the USB port. The GX-6000 Data Logger Management Program is available at www.rkiinstruments.com/gx6000. The USB/IrDA adapter cable is also available from RKI Instruments, Inc. DISP LANGUAGE CHANGE TO ENGLISH CONFIRM ?

GX-6000 Operator’s Manual The data logging capacity depends on how often the GX-6000 stores data and how often the GX-6000 is turned on and off. The table below illustrates how much data logging time is available for the various interval times. It assumes that the unit is only turned on once and that there are no alarm occurrences. See “Updating the Data Log Interval Setting” on page 142 for instructions on setting the data logging interval time. For a complete description of the Data Logger Management Program and procedures for downloading data to a computer, see the GX-6000 Data Logger Management Program Operator’s Manual. Table 9: Data Logging Capacity Interval Time Data Logging Time 10 seconds 10 hours 20 seconds 20 hours 30 seconds 30 hours 1 minute 60 hours 3 minutes 180 hours 5 minutes 300 hours 10 minutes 600 hours

Overview • 60 Chapter 4: Calibration Mode Overview This section describes the GX-6000 in Calibration Mode. In Calibration Mode, you can move through a menu of screens to do the following: • Perform a fresh air (zero) adjustment • Perform a span adjustment using auto calibration • Perform a span adjustment using single calibration • Perform a bump test NOTE: You can set up the GX-6000 to alert you during the startup sequence when calibration is due. See “Updating the Calibration Reminder Setting” on page 125. The unit should be calibrated periodically. The optimum frequency of calibration depends heavily on how the GX-6000 is used. For example, instruments used daily may need to be calibrated weekly or monthly, while instruments that are used only a few times a year may need to be calibrated before each use. Typical calibration frequencies range from monthly to quarterly. Calibration Supplies and Equipment To calibrate the GX-6000, you will need: • Known calibrating samples of the gas being detected. RKI Instruments, Inc. normally recommends a calibration concentration between 10% and 50% of the full scale value but in this case, RKI Instruments, Inc. recommends a calibration concentration of 10 ppm IBL for the low range sensor and 100 ppm IBL for the high range sensor. • A demand-flow regulator to provide adequate sample gas flow • Non-absorbent tubing WARNING: If you are using a calibration kit that includes a gas bag and a fixed flow regulator or dispensing valve, do not apply gas directly to the GX-6000 with the regulator or dispensing valve or damage to the pump will result.

GX-6000 Operator’s Manual Entering Calibration Mode To enter Calibration Mode, do the following: 1 . Find a fresh-air environment. This is an environment free of toxic or combustible gases and of normal oxygen content (20.9%). 2 . While in Measuring Mode, press and hold the SHIFT ▼ (PANIC) button, then press the DISP/LOCK button and release both buttons. 3 . If the unit prompts you for the password, enter it by using the ▲ AIR and SHIFT ▼ (PANIC) buttons to select each password number and then pressing and releasing POWER/ENTER to enter the number and move on to the next one. NOTE: You will only be prompted to enter a password if the PASSWORD menu item in User Mode is set to ON. See “Turning the Password Function On or Off” on page 85 for instructions to update the PASSWORD setting and to choose a password. 4 . The Calibration Mode Screen displays with the cursor next to AIR CAL. Calibrating Using the Auto Calibration Method This method is the quickest and easiest method to calibrate the GX-6000. See Table 13 on page 113 for available cylinders. Make sure your calibration cylinder is appropriate for the PID detection range. Setting the Fresh Air Reading 1 . Find a fresh-air environment. This is an environment free of toxic or combustible gases and of normal oxygen content (20.9%). 2 . While in Measuring Mode, press and hold the SHIFT ▼ (PANIC) button, CAL CAL MODE AIR CAL AUTO CAL SINGLE CAL NORMAL MODE

Calibrating Using the Auto Calibration Method • 62 then press the DISP/LOCK button and release both buttons. 3 . If the unit prompts you for the password, enter it by using the ▲ AIR and SHIFT ▼ (PANIC) buttons to select each password number and then pressing and releasing POWER/ENTER to enter the number and move on to the next one. NOTE: You will only be prompted to enter a password if the PASSWORD menu item in User Mode is set to ON. See “Turning the Password Function On or Off” on page 85 for instructions to update the PASSWORD setting and to choose a password. 4 . The Calibration Mode Screen displays with the cursor next to AIR CAL. 5 . Press and release the POWER/ENTER button. The Fresh Air Reading screen will display. 6 . If you suspect any low-level VOC background in the area, attach the tubing stub of the VOC zero filter to the inlet fitting or probe and let the instrument draw through it for 1 minute before continuing. 7 . To continue with the fresh air adjustment, press and hold the ▲ AIR button. If you do not want to continue, press and release the DISP/LOCK button and the unit will return to the Calibration Mode Screen. CAL CAL MODE AIR CAL AUTO CAL SINGLE CAL NORMAL MODE AIR VOC ppm 0.0

GX-6000 Operator’s Manual 8 . The GX-6000 will indicate that it is adjusting the zero reading for a few seconds and then it will prompt you to release the ▲ AIR button. 9 . Release the ▲ AIR button. The fresh air adjustment will finish, the fresh air reading will be displayed momentarily, and then the instrument will return to the Calibration Mode Screen. Performing a Span Adjustment in Auto Calibration 1 . Install the demand flow regulator onto the calibration cylinder. 2 . Connect the sample tubing to the demand flow regulator. AIR AIR CAL HOLD AIR KEY AIR AIR CAL HOLD AIR KEY ADJUSTING ZERO AIR AIR CAL RELEASE AIR KEY ZERO ADJUSTED AIR AIR CAL ZERO ADJUSTED CAL CAL MODE AIR CAL AUTO CAL SINGLE CAL NORMAL MODE AIR AIR CAL END AIR VOC ppm 0.0

Calibrating Using the Auto Calibration Method • 64 3 . Install the sample hose and probe on the GX-6000 inlet fitting. Make sure the probe’s two halves are tightened firmly together to avoid leaks that can affect the calibration. See Figure 21, “Replacing the Particle Filter and Hydrophobic Filter Disk” on page 99 for an illustration of the internal parts of the probe. 4 . Move the cursor next to the AUTO CAL menu item by using the ▲ AIR or SHIFT ▼ (PANIC) button. 5 . Press and release the POWER/ENTER button to display the Auto Cal Menu. CAL CAL MODE AIR CAL AUTO CAL SINGLE CAL NORMAL MODE AUTO AUTO CAL CONCENTRATION GAS SELECT ESCAPE

GX-6000 Operator’s Manual 6 . To check or update the gas concentration, use the ▲ AIR and SHIFT ▼ (PANIC) buttons to put the cursor next to CONCENTRATION and press and release the POWER/ENTER button to display the Calibration Gas Values Screen. The gas concentration displayed in the Calibration Gas Values Screen must match the gas concentration listed on the PID cylinder. If the concentration matches, go to Step 11. If the concentration does not match, continue with Step 7. If you do not want to continue with the concentration adjustment, press and release the DISP/LOCK button to return to the Auto Cal Menu. 7 . The cursor will already be next to the PID channel. 8 . Press and release the POWER/ENTER button. The auto cal value will begin to flash. 9 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to adjust the calibration gas setting to the desired value. 10 . Press and release the POWER/ENTER button to save the change. The calibration gas value stops flashing. 11 . When you are done adjusting the calibration gas value, move the cursor to ESCAPE. AUTO CONCENTRATION VOC 100.0 ppm ESCAPE AUTO CONCENTRATION VOC 100.0 ppm ESCAPE

Calibrating Using the Auto Calibration Method • 66 12 . Press and release the POWER/ENTER button. The instrument returns to the Auto Cal Menu. 13 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to move the cursor next to GAS SELECT. 14 . Press and release the POWER/ENTER button. The PID sensor screen will be displayed. In addition to the PID sensor screen, there is an ESCAPE screen that will take you back to the Auto Cal menu. Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to scroll between the screens. AUTO AUTO CAL CONCENTRATION GAS SELECT ESCAPE AUTO GAS SELECT VOC 100.0 ppm AUTO GAS SELECT ESCAPE ▲ AIR or SHIFT ▼ (PANIC)

GX-6000 Operator’s Manual 15 . With the PID sensor screen displayed, press and release the POWER/ ENTER button. The target gas selection screen will display. This screen allows you to select the gas you want to use for calibration. Isobutylene will always be displayed on the top line. The second line will show the gas that is currently selected in the PID Gas Name Screen in Display Mode. In the example below, acetone is the currently selected gas. If isobutylene is the selected gas, then isobutylene will appear twice in this list. 16 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to move the cursor next to the gas you want to use for calibration. 17 . Press and release the POWER/ENTER button to proceed to the Calibration In Process Screen with APPLYGAS and the gas reading flashing. If you do not want to proceed with the calibration, press and release the DISP/LOCK button to return to the Gas Select Screen. If you do want to continue with the calibration, proceed to the next step. 18 . Connect the tubing from the demand flow regulator to the rigid tube on the probe. Allow the GX-6000 to draw gas for one minute. AUTO GAS SELECT Isobutylene Acetone ESCAPE APPLYGAS VOC ppm 100.0

Calibrating Using the Auto Calibration Method • 68 19 . Press and release the POWER/ENTER button to set the span adjustment to the programmed value. 20 . If the PID channel passed calibration, the following screen sequence occurs. 21 . If the PID sensor cannot be adjusted to the proper value, a screen displays that indicates a calibration failure. The buzzer and alarm LEDs activate in a double pulsing pattern. Press and release the RESET button to reset the alarm and continue to the Auto Cal Menu. Attempt to calibrate the PID channel again. If the failure continues, investigate the cause. See “Troubleshooting” on page 87. Returning to Measuring Mode 1 . Disconnect the tubing from the probe. 2 . Unscrew the demand flow regulator from the calibration cylinder. 3 . Use the SHIFT ▼ (PANIC) button to move the cursor next to ESCAPE, then press and release the POWER/ENTER button to return to the Calibration Mode Menu. 4 . Use the SHIFT ▼ (PANIC) button to place the cursor next to the NORMAL MODE menu option, then press and release the POWER/ ENTER button to return to Measuring Mode. AUTO PASS AUTO AUTO CAL CONCENTRATION GAS SELECT ESCAPE AUTO VOC ppm 100.0 SENSOR VOC ppm FAIL

GX-6000 Operator’s Manual Calibrating Using the Single Calibration Method Setting the Fresh Air Reading 1 . While in the Calibration Mode Screen, move the cursor to the AIR CAL menu item by using the SHIFT ▼ (PANIC) button. 2 . Press and release the POWER/ENTER button. The Fresh Air Reading Screen will be displayed. 3 . If you suspect any low-level VOC background in the area, attach the tubing stub of the VOC zero filter to the inlet fitting or probe and let the instrument draw through it for 1 minute before continuing. 4 . To continue with the fresh air adjustment, press and hold the ▲ AIR button. If you do not want to continue, press and release the DISP/LOCK button and the unit will return to the Calibration Mode Screen. CAL CAL MODE AIR CAL AUTO CAL SINGLE CAL NORMAL MODE AIR VOC ppm 0.0

Calibrating Using the Single Calibration Method • 70 5 . The GX-6000 will indicate that it is adjusting the zero reading for a few seconds and then it will prompt you to release the ▲ AIR button. 6 . Release the ▲ AIR button. The fresh air adjustment will finish, the fresh air reading will be displayed momentarily, and then the instrument will return to the Calibration Mode Screen. Performing a Span Adjustment in Single Calibration 1 . Install the demand flow regulator onto the calibration cylinder. 2 . Connect the sample tubing to the demand flow regulator. AIR AIR CAL HOLD AIR KEY AIR AIR CAL HOLD AIR KEY ADJUSTING ZERO AIR AIR CAL RELEASE AIR KEY ZERO ADJUSTED AIR AIR CAL ZERO ADJUSTED CAL CAL MODE AIR CAL AUTO CAL SINGLE CAL NORMAL MODE AIR AIR CAL END AIR VOC ppm 0.0

GX-6000 Operator’s Manual 3 . Install the sample hose and probe on the GX-6000 inlet fitting. Make sure the probe’s two halves are tightened firmly together to avoid leaks that can affect the calibration. See Figure 21, “Replacing the Particle Filter and Hydrophobic Filter Disk” on page 99 for an illustration of the internal parts of the probe. 4 . Move the cursor next to the SINGLE CAL menu item by using the ▲ AIR or SHIFT ▼ (PANIC) button. 5 . Press and release the POWER/ENTER button. The Select Sensor Screen appears. 6 . The cursor will already be next to the PID channel. If you do not want to proceed with the span adjustment, press and release the DISP/LOCK button or place the cursor next to ESCAPE and press and release POWER/ENTER to return to the Calibration Mode Screen. To proceed with the calibration, continue with the next step. CAL CAL MODE AIR CAL AUTO CAL SINGLE CAL NORMAL MODE SINGLE SINGLE CAL VOC ESCAPE

Calibrating Using the Single Calibration Method • 72 7 . Press and release the POWER/ENTER button. The target gas selection screen will display. This screen allows you to select the gas you want to use for calibration. Isobutylene will always be displayed on the top line. The second line will show the gas that is currently selected in the PID Gas Name Screen in Display Mode. In the example below, acetone is the currently selected gas. If isobutylene is the selected gas, then isobutylene will appear twice in this list. 8 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to move the cursor next to the gas you want to use for calibration. 9 . Press and release the POWER/ENTER button to proceed to the Single Calibration Apply Gas Screen. APPLYGAS and the gas reading will be flashing. 10 . Connect the tubing from the demand flow regulator to the rigid tube on the probe. Allow the GX-6000 to draw gas for one minute. 11 . If necessary, adjust the reading to match the cylinder concentration with the ▲ AIR and SHIFT ▼ (PANIC) buttons. If the reading cannot be adjusted to match the cylinder concentration, see “Troubleshooting” on page 87. SINGLE GAS SELECT Isobutylene Acetone ESCAPE APPLYGAS VOC ppm 100.0

GX-6000 Operator’s Manual 12 . Press and release the POWER/ENTER button to save the span value. The LCD will indicate that the calibration has ended, then the Select Sensor Screen appears. 13 . Disconnect the tubing from the GX-6000’s probe. 14 . Unscrew the demand flow regulator from the calibration cylinder. 15 . With the Select Sensor Screen displayed, place the cursor next to ESCAPE using the ▲ AIR or SHIFT ▼ (PANIC) button. 16 . Press and release the POWER/ENTER button to return to the Calibration Mode Screen. 17 . Use the SHIFT ▼ (PANIC) button to place the cursor next to the NORMAL MODE menu item, then press and release the POWER/ ENTER button to return to Measuring Mode. SINGLE PASS SINGLE SINGLE CAL VOC ESCAPE SINGLE SINGLE CAL VOC ESCAPE

Performing a Bump Test • 74 Performing a Bump Test NOTE: The BUMP DISP menu item in Maintenance Mode is factory set to OFF. The BUMP TEST menu item will not appear unless BUMP DISP is set to ON. See “Updating the Bump Display Setting” on page 127 for instructions. NOTE: The GX-6000 uses parameters defined in the BUMP PARAMETERS menu item of Maintenance Mode while performing a bump test. To view or update these parameters, see “Updating the Bump Parameters” on page 128. 1 . Install the demand flow regulator onto the calibration cylinder. 2 . Connect the sample tubing to the demand flow regulator. 3 . Install the sample hose and probe on the GX-6000 inlet fitting. Make sure the probe’s two halves are tightened firmly together to avoid leaks that can affect the calibration. See Figure 21, “Replacing the Particle Filter and Hydrophobic Filter Disk” on page 99 for an illustration of the internal parts of the probe. 4 . While in Measuring Mode, press and hold the SHIFT ▼ (PANIC) button, then press the DISP/LOCK button and release both buttons. 5 . If the unit prompts you for the password, enter it by using the ▲ AIR and SHIFT ▼ (PANIC) buttons to select each password number and then pressing and releasing POWER/ENTER to enter the number and move on to the next one. NOTE: You will only be prompted to enter a password if the PASSWORD menu item in User Mode is set to ON. See “Turning the Password Function On or Off” on page 85 for instructions to update the PASSWORD setting and to choose a password.

GX-6000 Operator’s Manual 6 . The Calibration Mode Screen displays with the cursor next to AIR CAL. 7 . Move the cursor next to the BUMP TEST menu item by using the SHIFT ▼ (PANIC) button. 8 . Press and release the POWER/ENTER button. The PID sensor screen will be displayed. In addition to the PID sensor screen there is an ESCAPE screen that will take you back to the Calibration Mode menu. Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to display the PID sensor screen. CAL CAL MODE AIR CAL AUTO CAL SINGLE CAL BUMP TEST NORMAL MODE CAL CAL MODE AIR CAL AUTO CAL SINGLE CAL BUMP TEST NORMAL MODE AUTO GAS SELECT VOC 100.0 ppm AUTO GAS SELECT ESCAPE ▲ AIR or SHIFT ▼ (PANIC)

Performing a Bump Test • 76 9 . Before proceeding, confirm that the bump test gas value is the same as the concentration in the calibration cylinder. If it is not, adjust the bump test gas value by entering the AUTO CAL menu item in Calibration Mode, changing the value there, and reentering the BUMP TEST menu item. 10 . With the PID sensor screen displayed, connect the tubing from the demand flow regulator to the rigid tube on the probe then quickly press and release the POWER/ENTER button to proceed to the Bump In Progress Screen. The instrument will count down. If you do not want to proceed with the bump test, press and release the DISP/LOCK button to return to the Gas Select Screen. If you do want to continue with the bump test, proceed to the next step. 30BUMP VOC ppm 100.0

GX-6000 Operator’s Manual 11 . When AUTO CAL in the BUMP PARAMETERS menu item in Maintenance Mode is set to OFF: a. The instrument will indicate whether or not the PID channel passed or failed the bump test with an OK (pass) or an NG (fail) to the right of the gas. You can scroll between the bump test result and the bump test gas reading with the ▲ AIR and SHIFT ▼ (PANIC) button. b. To return to the Gas Select Screen, press and release the POWER/ ENTER button. If the PID channel failed the bump test, the buzzer will sound a double pulsing tone until you press and release the POWER/ENTER button. If the PID sensor failed the bump test, see “Troubleshooting” on page 87 to investigate the cause of the failure and replace the failed sensor, if necessary. c. Disconnect the tubing from the probe. ▲ AIR or SHIFT ▼ (PANIC) BUMP VOC ppm 100.0 BUMP VOC OK

Performing a Bump Test • 78 12 . When AUTO CAL in the BUMP PARAMETERS menu item in Maintenance Mode is set to ON: If the PID channel passes the bump test: a. The results screen appears. You can scroll between the bump test result and the bump test gas reading with the ▲ AIR and SHIFT ▼ (PANIC) buttons. b. To return to the Gas Select Screen, press and release the POWER/ ENTER button. c. Disconnect the tubing from the probe. If the P ID channel fails the bump test: a. The instrument will beep and a calibration is immediately and automatically started. Continue to apply the calibration gas. CAL will appear at the top of the screen along with a countdown. The calibration time counted down during a calibration initiated because of a failed bump test is the difference between the gas time and the calibration time defined in the BUMP SETTING menu item in Maintenance Mode. ▲ AIR or SHIFT ▼ (PANIC) BUMP VOC ppm 100.0 BUMP VOC OK 60CAL VOC ppm 100.0

GX-6000 Operator’s Manual b. At the end of the calibration, the instrument displays the results from both the bump test and the calibration. Use the ▲ AIR and SHIFT ▼ (PANIC) button to scroll between the calibration/bump test results, the bump test gas reading, and the calibration gas reading. c. To return to the Gas Select Screen, press and release the POWER/ ENTER button at any time. If the PID channel failed the calibration, the buzzer will sound a double pulsing tone until you press and release the POWER/ENTER button. d. Disconnect the tubing from the probe. 13 . Unscrew the demand flow regulator from the calibration cylinder. 14 . Use the SHIFT ▼ (PANIC) button to display the ESCAPE screen, then press and release the POWER/ENTER button to return to the Calibration Mode Menu. 15 . Use the SHIFT ▼ (PANIC) button to place the cursor next to the NORMAL MODE menu option, then press and release the POWER/ ENTER button to return to Measuring Mode. ▲ AIR or ▲ AIR or ▲ AIR or SHIFT ▼ (PANIC) SHIFT ▼ (PANIC) SHIFT ▼ (PANIC) BUMP VOC NG OK CAL VOC ppm 100.0 BUMP VOC ppm 27.0

Overview • 80 Chapter 5: User Mode Overview This section describes the GX-6000 in User Mode. See Table 10 below for a list of the items found in User Mode, the page that the menu item’s instructions can be found on, and a short description of the menu item. Tips for Using User Mode • When in the main menu, the cursor (>) indicates which menu item will be selected if the POWER/ENTER button is pressed and released. • Use the SHIFT ▼ (PANIC) button to move the cursor down through the main menu and submenu items, and to lower values or change the setting in a specific option. • Use the ▲ AIR button to move the cursor up through the main menu and submenu items, and to raise values or change the setting in a specific option. • Use the POWER/ENTER button to enter a selected menu item with the cursor next to it and to enter and save settings during programming. • An adjustable parameter that is flashing can be adjusted with the ▲ AIR and SHIFT ▼ (PANIC) buttons. • Press the DISP/LOCK button while in a screen where you are entering or updating parameters to exit the screen without saving any changes. Table 10: User Mode Menu Items Menu Item (page number) Description DATE (pg.82) Set the instrument’s date and time DATE FORMAT (pg.83) Set the date format CONFIGURE CH (pg.83) N/A LANGUAGE (pg.83) Change the instrument’s language ROM/SUM (pg.84) View the instrument’s ROM number and checksum PASSWORD (pg.85) Turn the User Mode password function on or off and update the password START MEASURE (pg.86) Return to Measuring Mode

GX-6000 Operator’s Manual Entering User Mode WARNING: The GX-6000 is not in operation as a gas detector while in User Mode. 1 . Take the GX-6000 to a non-hazardous location and turn it off if it is on. 2 . Press and hold the ▲ AIR and SHIFT ▼ (PANIC) buttons, then press and hold the POWER/ENTER button. When you hear a beep, release the buttons. 3 . The screen that appears will depend on the setting of User Mode’s PASSWORD item. If PASSWORD is set to OFF (factory setting), continue with Step 4. If PASSWORD is set to ON, continue with Step 6. 4 . If PASSWORD has been set to OFF, the Mode Select screen will appear, prompting you to choose the mode you’d like to enter. 5 . Use the ▲ AIR and SHIFT ▼ (PANIC) buttons to put the cursor in front of USER MODE and press and release the POWER/ENTER button. Continue to Step 8. 6 . If PASSWORD has been set to ON in User Mode, a password screen will appear. The first digit will be flashing. 7 . Enter the password by using the ▲ AIR and SHIFT ▼ (PANIC) buttons to select each password number and then pressing and releasing the POWER/ENTER button to enter it and move on to the next number until all of the numbers are entered. Continue to Step 8. PASSWORD MODE SELECT USER MODE MAINTENANCE PASSWORD INPUT PASSWORD 0 0 0 0 PASSWORD set to OFF PASSWORD set to ON

Setting the Date and Time • 82 8 . The main menu displays. It has 7 menu items. 9 . Use the ▲ AIR or SHIFT ▼ (PANIC) button to move the cursor up and down the menu items. Setting the Date and Time NOTE: The example screen shown below assumes a DATE FORMAT setting of MM/DD/YYYY (factory setting). If your instrument’s DATE FORMAT is set to something else, your screen will appear different. 1 . From the main menu, place the cursor next to DATE. 2 . Press and release POWER/ENTER. The date and time will be displayed with the year flashing. 3 . Use ▲ AIR or SHIFT ▼ (PANIC) to display the desired year. 4 . Press and release POWER/ENTER to save the setting. The month setting flashes. 5 . Repeat Step 3 and Step 4 to enter the month, day, hours, and minutes settings. The main menu displays after you enter the seconds setting. MAINTE USER DATE DATE FORMAT CONFIGURE CH LANGUAGE ROM/SUM PASSWORD START MEASURE DATE DATE 5/ 1/2015 MM/DD/YYYY 12:55

GX-6000 Operator’s Manual Setting the Date Format The date can be displayed in three ways, MM/DD/YYYY (factory setting), DD/MM/YYYY, or YYYY/MM/DD. 1 . From the main menu, place the cursor next to DATE FORMAT. 2 . Press and release POWER/ENTER. The Date Format screen appears with the current setting flashing. 3 . Use ▲ AIR or SHIFT ▼ (PANIC) to display the desired setting. 4 . Press and release POWER/ENTER to save the setting and return to the main menu. Configuring the Channels This menu item does not apply to this version of the GX-6000. Updating the Language Setting The LANGUAGE menu item allows you to select the language for the GX-6000’s user interface. The available choices are English (factory setting), Japanese, Italian, Spanish, German, French, Portuguese, Russian, and Korean. 1 . From the main menu, place the cursor next to LANGUAGE. 2 . Press and release POWER/ENTER. The Select Language Screen appears with the cursor in front of the current language. USER LANGUAGE ENGLISH JAPANESE ITALIAN SPANISH GERMAN FRENCH PORTUGUESE RUSSIAN

Viewing the ROM/SUM of the Instrument • 84 3 . Use ▲ AIR or SHIFT ▼ (PANIC) to move the cursor in front of the desired language. If you do not wish to select a new language, press and release DISP/ LOCK. The unit will return to the main menu. 4 . Press and release POWER/ENTER to save the new language setting and return to the main menu. The GX-6000’s user interface will now be in the newly selected language. Viewing the ROM/SUM of the Instrument The ROM/SUM screen shows the firmware version that is loaded in the instrument and the firmware checksum. 1 . Use the ▲ AIR or SHIFT ▼ (PANIC) button to place the cursor next to ROM/SUM. 2 . Press and release the POWER/ENTER button. The ROM and checksum values for your unit will be displayed. 3 . The first line displays the ROM number. The ROM number indicates the firmware version number. In the above example, the ROM number is 05017. The bottom line displays the firmware file’s checksum, 62C7 in the above example. 4 . Press and release the POWER/ENTER button again to return to the main menu. ROM/SUM ROM 05017 SUM 62C7

GX-6000 Operator’s Manual Turning the Password Function On or Off With PASSWORD set to ON, the GX-6000 prompts you for a password when you enter User Mode and Calibration Mode. With PASSWORD set to OFF (factory setting), no password is required to enter User Mode or Calibration Mode. 1 . From the main menu, place the cursor in front of PASSWORD. 2 . Press and release POWER/ENTER. The Password Protection Screen appears. 3 . Use ▲ AIR or SHIFT ▼ (PANIC) to display the desired setting. 4 . If you selected OFF, press and release POWER/ENTER to save the setting and return to the main menu. If you selected ON, continue with Step 5. 5 . Press and release POWER/ENTER. The Set Password Screen appears. 0000 is at the bottom of the screen with the first 0 flashing. 6 . Use ▲ AIR or SHIFT ▼ (PANIC) to display a number from 0 to 9. USER USER PASSWORD ON USER USER PASSWORD INPUT PASSWORD 0 0 0 0

Exiting User Mode • 86 7 . Press and release POWER/ENTER to enter the selection and advance to the next number. 8 . Repeat Step 6 and Step 7 to select the remaining numbers. When you press and release POWER/ENTER to enter the last number, the password is saved and you return to the main menu. Exiting User Mode 1 . From the main menu, place the cursor in front of START MEASURE at the bottom of the menu. 2 . Press and release POWER/ENTER. 3 . The unit will begin its start-up sequence.

GX-6000 Operator’s Manual Chapter 6: Maintenance Overview This chapter describes troubleshooting procedures for the GX-6000. It also includes procedures for replacing and recharging the batteries and replacing various consumable parts. WARNING: RKI Instruments, Inc. recommends that service, calibration, and repair of RKI Instruments be performed by personnel properly trained for this work. Replacing the sensor and other parts with original equipment does not affect the intrinsic safety of the instrument. Troubleshooting The troubleshooting table describes error messages, symptoms, probable causes, and recommended action for problems you may encounter with the GX-6000. Table 11: Troubleshooting the GX-6000 Symptoms Probable Causes Recommended Action • The LCD is blank. • The unit may have been turned off. • The alkaline batteries may need to be replaced or Li- ion battery pack may need to be recharged. 1. To turn on the unit, press and briefly hold the POWER/ENTER button. 2. If the unit does not turn on, replace the alkaline batteries or recharge the Li-ion battery pack. 3. If the difficulties continue, contact RKI Instruments, Inc. for further instruction. • The LCD shows an abnormally high or low reading but other gas detection instruments do not. • The GX-6000 may need to be recalibrated. • The sensor may need replacement. 1. Recalibrate the unit. 2. If the difficulties continue, replace the sensor and calibrate again. 3. If the difficulties continue, contact RKI Instruments, Inc. for further instruction.

Troubleshooting • 88 • The unit indicates flow failure and does not recover when RESET is pressed and released. • The probe tube is clogged. • The hydrophobic filter disk in the probe is dirty. • The sample hose has a kink or obstruction. • The pump is malfunctioning. 1. Inspect the probe tube for any obstructions. 2. Inspect the hydrophobic filter disk in the probe and replace if necessary. 3. Inspect the sample hose for kinks or obstructions and replace if necessary. 4. If difficulties continue, contact RKI Instruments, Inc. for further instruction. • Auto calibration or single calibration fails. • The auto calibration value may not match the cylinder gas concentration (auto calibration only). • The sample gas is not reaching the sensor because of a bad connection. • The calibration cylinder may be out of gas or is outdated. • The lamp may need to be cleaned. • The electrode stack may need to be replaced. • The sensor may need replacement. 1. Check all calibration tubing for leaks or for any bad connections. 2. Make sure the GX-6000 has been properly set up for calibration. 3. Verify that the calibration cylinder contains an adequate supply of fresh test sample. 4. Clean the PID sensor’s lamp. 5. Replace the PID sensor’s electrode stack. 6. If the fail condition continues, replace the sensor. 7. If the difficulties continue, contact RKI Instruments, Inc. for further instruction. • Heart symbol at the top of the screen becomes steadily on or disappears • A microprocessor error has occurred. • Contact RKI Instruments, Inc. for further instruction. Table 11: Troubleshooting the GX-6000 Symptoms Probable Causes Recommended Action

GX-6000 Operator’s Manual Replacing or Recharging the Batteries WARNING: To prevent ignition of a hazardous atmosphere, batteries must only be changed or charged in an area known to be nonhazardous. AVERTISSEMENT:Pour éviter l’inflammation d’une atmosphère dangereuse, les batteries doivent uniquement être modifiés ou facturés dans une zone connue comme non dangereuse. Replace or recharge the batteries when the battery icon indicates that the unit is in low battery warning. When in low battery warning, the lowest battery level indication bar disappears and the battery icon will be flashing. Replacing Alkaline Batteries NOTE: Use Procell PC 1500 alkaline batteries or RKI Instruments, Inc. lithium-ion battery pack 49-1619 to maintain the CSA classification of the GX-6000. Use of other batteries will void the CSA classification and may void the warranty. Do not mix old/new or different types of batteries. NOTE: Utiliser Procell 1500 piles alcalines ou RKI Instruments, Inc. pack batterie lithium-ion 49-1619 de maintenir la classification CSA de la GX-6000. L’utilisation d’autres piles annule la classification CSA et peut annuler la garantie. Ne mélangez pas les anciennes/nouvelles ou différents types de piles. 1 . Turn off the GX-6000. WARNING: Do not remove the batteries while the GX-6000 is on. 2 . Turn the GX-6000 over so that the flow chamber and battery cover are facing up and the LCD is facing down.

Replacing or Recharging the Batteries • 90 3 . Push the battery cover latch toward the bottom of the instrument. Figure 10: Releasing Battery Cover Latch 4 . Grasp the end of the battery cover that’s closest to the bottom of the instrument and lift it up. Figure 11: Opening Battery Cover 5 . Carefully remove the old alkaline batteries. Verify that the battery compartment and electrical contacts are clean.

GX-6000 Operator’s Manual 6 . Carefully install the new AA alkaline batteries according to the battery diagram inside the battery compartment. Figure 12: Installing the Alkaline Batteries 7 . Close the battery cover and secure the battery cover latch by pushing it up and toward the top of the instrument. Replacing the Lithium Ion Battery Pack NOTE: Use Procell PC 1500 alkaline batteries or RKI Instruments, Inc. lithium-ion battery pack 49-1619 to maintain the CSA classification of the GX-6000. Use of other batteries will void the CSA classification and may void the warranty. Do not mix old/new or different types of batteries. NOTE: Utiliser Procell 1500 piles alcalines ou RKI Instruments, Inc. pack batterie lithium-ion de maintenir la classification CSA de la GX- 6000. L’utilisation d’autres piles annule la classification CSA et peut annuler la garantie. Ne mélangez pas les anciennes/nouvelles ou différents types de piles. 1 . Turn off the GX-6000. WARNING: Do not remove the battery pack while the GX-6000 is on. 2 . Remove the rubber boot, if installed. 3 . Turn the GX-6000 over so that the flow chamber and battery cover are facing up and the LCD is facing down. 4 . The battery pack release latch is located on the bottom of the instrument and is closer to the front of the case than the back.

Replacing or Recharging the Batteries • 92 5 . Slide the battery pack release latch to the right with one hand and lift up on the battery pack with the other. Figure 13: Releasing the Battery Pack 6 . Slide the battery pack away from the instrument. 7 . Install a new battery pack. If the battery pack release latch moved back into its closed position, slide the latch to the right with one hand and insert a new battery pack with the other. Figure 14: Installing the Battery Pack 8 . Release the battery pack release latch. If it does not return to its closed position automatically, push the latch to the left and toward the instrument until it is flush with the bottom of the instrument. 9 . Reinstall the rubber boot, if desired. 2. 1. Lift Up on Battery Pack Slide Battery Pack Release Latch to the Right 2. 1. Be Sure Battery Pack Release Latch is Pushed to the Right Push New Battery Pack Down

GX-6000 Operator’s Manual Recharging the Lithium Ion Battery Pack in the Instrument CAUTION: To be used only with lithium ion battery pack p/n 49-1619. Charge only with RKI charger model BC-6000, p/n 49-2182, or RKI charger model BC-6000DC, p/n 49-2183. Use of other rechargeable batteries or chargers or charging of other rechargeable batteries in the GX-6000 will void the warranty. PRUDENCE:Pour être utilisé uniquement avec une batterie au lithium-ion p/n 49-1619. Charge uniquement en fonction du modèle de chargeur RKI BC-6000, p/n 49-2182, ou modèle de chargeur BC-6000DC RKI, p/n 49-2183. L’utilisation d’autres piles ou chargeurs rechargeables ou charger d’autres batteries recharegables dans le GX-6000 annule la garantie. The charger can be mounted to the wall using DIN rail, if desired. See “DIN Rail Mounting Assembly” on page 13 for instructions. 1 . Make sure the GX-6000 is off. 2 . Confirm that the power adapter’s DC output cord is plugged into the charger. 3 . If using an AC powered charging station, plug the AC adapter into an electrical outlet. Figure 15: Connecting the Charging Station’s AC Adapter To AC Outlet Power Supply Jack (on bottom of charger) DC12V AC Power Supply AC Powered Charging Station