84 • Start Up, Leak Check Mode
GX-2012 Operator’s Manual
13.
The GX-2012 is now operating in Leak Check Mode.
The combustible gas reading is displayed along with the battery charge level.
Performing a Fresh Air Adjustment, Leak Check Mode
Before using the GX-2012 for leak checking, it is recommended to set the fresh air reading
by performing a fresh air adjustment. This will set the combustible gas channel to zero.
RKI Instruments recommends allowing the GX-2012 to run for as long as possible after
turning on the instrument before performing a fresh air adjustment.
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-2012, Leak Check Mode”
3.
Press and hold the AIR
button. The display will prompt you to hold the AIR
button.
4.
Continue to hold the AIR
button until the display prompts you to release the AIR
button. The GX-2012 will set the fresh air reading for the combustible channel. Once
the fresh air adjustment has finished, start up is complete and the unit is ready for leak
testing.
5. If you would like to calibrate the GX-2012 while in Leak Check Mode, follow the
same instructions described in “Calibration Mode” on page 56.
0
5000
ppm
ppm
LEAK CK MODE
CH
4
F.S.
AIr
CAL
HOLD AIR
www.calcert.com
1.800.544.2843
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