GX-2012 Operator’s Manual Start Up, Bar Hole Mode • 77
AL -- H indicates latching (hold) alarms and AL -- A indicates self-
resetting (automatic) alarms. The number shown indicates the voltage of
the batteries. A fully charged lithium ion battery pack will display 3.7 V.
If the unit is powered by alkaline (dry cell) batteries, a “D” will appear in
front of the “V” in the lower right corner.
11. The display then indicates the following items for about a second each:
• Full scale values for all channels
• Warning setpoint (low gas alarm) for all channels
• Alarm setpoint (high gas alarm) for all channels
• STEL alarm setpoint for the CO and H
2
S channels
• TWA alarm setpoint for the CO and H
2
S channels
12. If the GX-2012 experiences a sensor failure during start up, a screen
indicating which sensor failed displays. In the example below, the
combustible gas %volume sensor has failed.
If one of the combustible sensors, LEL or % volume, fails, it is not
possible to enter Bar Hole Mode. Press and release the RESET SILENCE
button to acknowledge the failure and return to the Mode Select Screen.
Replace the failed sensor as soon as possible.
If the oxygen sensor fails, press and release the RESET SILENCE button
to acknowledge the failure and continue to Bar Hole Mode. The gas
reading for the oxygen sensor will be replaced by “XXX”. Replace the
failed sensor as soon as possible.
To Next Page
Loading...
