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GX-2012 Operator’s Manual Leak Testing • 91
Leak Testing
In Leak Check Mode, the GX-2012 only displays combustible gas readings.
The increment of the reading is always 100 ppm but the display range can be
adjusted by using the DISPLAY (ADJ) button. The display range choices are
500 ppm, 1000 ppm, 2000 ppm, and 5000 ppm. The readings are displayed in
both numerical and bar graph form. As the gas concentration increases from
0 ppm, the alarm LEDs begin to blink in unison with the buzzer’s pulsing.
The blinking/pulsing rate increases as the gas reading increases. If desired the
buzzer can be turned off in Leak Check Mode.
In a low-light environment, press and release any of the buttons to turn on the
display backlight. If BEEP. SET is turned on in Maintenance Mode, the GX-
2012 beeps once every 5 minutes to confirm that it’s operating.
Setting the Display Range Value
The GX-2012 Leak Check Mode has 4 display range ppm values to choose
from: 500 ppm, 1000 ppm, 2000 ppm, and 5000 ppm.
NOTE: The GX-2012 is always detecting combustible gas up to 5000 ppm.
The display range value is only adjusting what part of the detection
range is displayed on the LCD.
To change the display range value:
1. While in Leak Check Mode, press and release the DISPLAY (ADJ)
button. The display range value displayed along the bottom of the screen
will change.
Continue to press and release the DISPLAY (ADJ) button until the desired
display range value is displayed.
2. The unit is now operating with the selected display range.
Locating a Leak
1. Start up the GX-2012 as described above in “Turning On the GX-2012,
Leak Check Mode” on page 84.
0
500
ppm
ppm
LEAK CK MODE
CH4
F. S .
- Operator’s Manual 1
- GX-2012 Operator’s Manual 2
- Warranty 3
- Table of Contents 4
- Chapter 1: Introduction 9
- About the GX-2012 9
- Specifications 11
- About this Manual 12
- Chapter 2: Description 13
- Instrument Description 13
- Combustible Gas Sensors 15
- Oxygen Sensor 15
- CO and H 15
- S Sensors 15
- Hollow Side 16
- Dummy Sensor 16
- Top Flat 16
- Button Function(s) 17
- Vibrator 18
- Batteries 18
- Flow Chamber 19
- Sensors and Filters 19
- Inlet Filter Holder 19
- Sample Hose 20
- Optional Accessories 21
- End Plugged 24
- Purge Tee Fitting 26
- External Dilution Fitting 26
- Start Up, Normal Mode 27
- With All Modes Active 33
- AIr 35
- HOLD AIR 35
- Measuring Mode, Normal 36
- Operation 36
- Using the Purge Tee Fitting 37
- Using the Dilution Fitting 38
- Combustible Gas Detection 39
- Snap Log Mode 41
- Measuring Mode, Alarms 44
- Responding to Alarms 47
- Responding to Battery Alarms 48
- 000 MPU failure 49
- 010 RAM failure 49
- 021 EEPROM failure 49
- 031 FLASH memory failure 49
- Inert Mode 50
- Display Mode 51
- HC 52
- SEL 52
- HC RANGE 52
- STEL Screen 53
- TWA Screen 53
- Alarm Points Screen 54
- Operation Time Screen 55
- Date/Time Screen 56
- Remaining Log Time Screen 56
- Clear Data Logger Screens 57
- Pump OFF Screen 58
- User ID Screen 59
- Station ID Screen 60
- Snap Logging Screen 61
- CO 62
- H2S 62
- Peak Bar Select Screen 63
- SDM-2012 64
- Data Logging 64
- Calibration Mode 65
- Bump Testing the GX-2012 74
- Start Up, Bar Hole Mode 81
- 0 87
- 20.9 87
- Bar Hole Testing 88
- Start Up, Leak Check Mode 92
- Leak Testing 99
- Overscale Conditions 100
- LEAK CK MODE 101
- Peak Hold Mode 102
- 103
- Chapter 6: Maintenance Mode 108
- Overview 108
- Using Maintenance Mode 109
- O2 115
- CO 115
- H2S 115
- Performing a Bump Test 119
- Turning Portuguese On or Off 146
- Channel Display Setting 147
- Exiting Maintenance Mode 150
- Troubleshooting 151
- Symptoms 152
- Probable 152
- Recommended Action 152
- OPEN CLOSE 154
- Slide Latch This Way 155
- Charge LED 156
- Power Supply Jack 156
- AC Power Supply 156
- DC Powered Charging Station 157
- Red Charging LED 158
- AC Powered Charging Station 159
- Battery Pack 161
- LEL Filter 162
- CO Filter 162
- Figure 27: Replacing a Sensor 163
- Part Number Description 166
- Sample Bag 169
- Preparing for Calibration or 170
- Bump Testing 170
- Calibrating the GX-2012 172
- Parts List 185
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