Instruction Manual

GX-2012 Operator’s Manual Using Maintenance Mode • 115
• To return to the main menu, press POWER ENTER.
• Disconnect the tubing from the probe.
If any channel fails the bump test,
• The instrument will beep and a calibration is immediately and
automatically started. Continue to apply the calibration gas. CAL on
the bottom left of the screen will alternate with APPLY.
The calibration time will begin to countdown in seconds in the lower
right of the screen. The calibration time counted down during a
calibration initiated because of a failed bump test is the difference
between the bump test gas time and the calibration time defined in
the BUMP--SET menu item in Maintenance Mode.
• At the end of the calibration, the instrument displays the results from
both the bump test and the calibration. Use the AIRS or (SHIFT)T
button to scroll between the calibration/bump test results, the bump
test gas readings, and the calibration gas readings.
MAINTENANCE
BUMP
1
20.9
37
10.0
%LEL
%
ppm
ppm
MAINTENANCE
CH4
O2
CAL 60
CO
H2S
FP
PP
FF
PP
%LEL
%
ppm
ppm
MAINTENANCE
CH4
O2
BUMP/CAL
CO
H2S