GX-6000 Operator’s Manual Leak Testing • 206
3 . Press and hold the â–²AIR button. The display prompts you to hold the â–²
AIR button.
4 . Continue to hold the â–²AIR button until the display prompts you to
release it. The GX-6000 will set the fresh air reading for the CH
4
channel. Start up is complete and the unit is now ready for monitoring.
Leak Testing
In Leak Check Mode, the GX-6000 only displays combustible gas readings.
The increment of the reading is always 100 ppm but the display range can be
adjusted by using the DISP/LOCK 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.
In a low-light environment, press and release any of the buttons to turn on the
display backlight. If CONFIRMATION is set to ON in the Maintenance
Mode menu, the GX-6000 beeps once every user-defined interval to confirm
that it’s operating.
Setting the Display Range Value
The GX-6000’s Leak Check Mode has 4 display range ppm values to choose
from: 500 ppm, 1000 ppm, 2000 ppm, and 5000 ppm.
NOTE: The GX-6000 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 DISP/LOCK button.
The display range value displayed along the bottom of the screen will
change.
2 . Continue to press and release the DISP/LOCK button until the desired
display range value is displayed.
3. The unit is now operating with the selected display range.
Turning the Alarm On and Off
The alarm buzzer can be turned off and on in Leak Check Mode. This setting
only applies to Leak Check Mode and does not affect buzzer operation in
Normal Mode. When the buzzer to turned off, NO ALARM appears at the
top of the screen. If the buzzer is turned off, then it will remain off in Leak
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