RKI Instruments GX-2012 Manual - Manual (Page 98)

90 • Start Up, Leak Check Mode GX-2012 Operator’s Manual
unit will enter Leak Check Mode.
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.
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” on page 84.
3. Press and hold the AIRS button. The display will prompt you to hold the
AIRS button.
4. Continue to hold the AIRS button until the display prompts you to
release the AIRS 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 57.
0
5000
ppm
ppm
LEAK CK MODE
CH
4
F.S.
AIr
CAL
HOLD AIR