90 • Leak Testing GX-2012 Operator’s Manual
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.
0
500
ppm
ppm
LEAK CK MODE
CH4
F.S.
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