Instruction Manual

116 • Using Maintenance Mode GX-2012 Operator’s Manual
• To return to the main menu, press POWER ENTER at any time. If
any channel failed the calibration, the buzzer will sound a double
pulsing tone until you press and release the POWER ENTER button.
• Disconnect the tubing from the probe.
13. Unscrew the demand flow regulator from the calibration cylinder.
14. With the BUMP menu option displayed, press the (SHIFT)T button until
the NORMAL menu option is displayed.
15. Press and release the POWER ENTER button to return to Measuring
Mode.
Turning the Lunch Break Setting On or Off
With LNCH BRK set to OFF (factory setting), the GX-2012 automatically
starts new TWA and PEAK reading collection and resets the time in
operation at startup.
With LNCH BRK set to ON, the Resume Measurements Screen displays
1
12.0
5
23.0
%LEL
%
ppm
ppm
MAINTENANCE
CH4
O2
BUMP/
CO
H2S
49
12.0
5
25.0
%LEL
%
ppm
ppm
MAINTENANCE
CH4
O2
/CAL
CO
H2S
MAINTENANCE
BUMP