46 • Calibration Mode
GX-2009 Operator’s Manual
5. Press and release the POWER MODE button. The LCD will display the current gas
readings and the instrument will count down from 30.
6. For toxic gas cylinders (like cylinders containing H
2
S), it is important to vent the regulator
while installing it onto the cylinder. Venting the regulator during installation helps prevent
air from getting into the cylinder and degrading the gas. Open the regulator by turning the
knob counterclockwise and install it onto the cylinder.
If you wish to cancel the bump test or a calibration initiated because of a failed bump test,
press and hold the AIR button until you return to the BUMP screen.
7. When the bump test countdown reaches 0, the unit will determine the bump test results
and proceed as described in either Step 8 or Step 9 depending on the setting of
Calibration After Bump Test Failed
. See the User Setup Program Operator’s Manual for
a complete description of this parameter.
8. When
Calibration After Bump Test Failed
is set to OFF:
•
The instrument will display which channels passed or failed the bump test.
•
To view the bump test gas readings press the AIR button.
•
To return to the BUMP screen in Calibration Mode, press POWER MODE. You may
also press POWER MODE to return to the BUMP screen without first viewing the
bump test gas readings.
See “Troubleshooting” on page 56 to investigate the cause of the failure and
replace the failed sensor or sensors if necessary.
•
Turn the regulator on/off knob clockwise to close it.
0 20.9
BUMP 30
CO ppm H2S ppm
CH4 %LEL OXY vol%
0 0.0
P F
BUMP
CO ppm H2S ppm
CH4 %LEL OXY vol%
F F
45 18.9
BUMP
CO ppm H2S ppm
CH4 %LEL OXY vol%
10 1.0
BUMP
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