219 • Bar Hole Testing GX-6000 Operator’s Manual
Bar Hole Testing
In Bar Hole Mode, the you can initiate sampling for a fixed time period to
monitor for combustible gas and oxygen in a bar hole. The factory set time is
30 seconds. To change the bar hole sampling time, see “Setting the Bar Hole
Measurement Time” on page 165. At the end of the sample period, the pump
will shut off and the peak combustible gas and minimum oxygen levels
monitored during the sample period will be displayed. Bar Hole Mode also
allows you to initiate an air purge cycle to purge gas from the GX-6000 after
a sample is taken.
In a low-light environment, press and release the SHIFT ▼ (PANIC) button
to turn on the display backlight. Although the backlight will turn on when
any button is pressed, other buttons may initiate an undesired operation
sequence. See “Updating the Backlight Time Setting” on page 160 to
program backlight duration. If CONFIRMATION is turned on in the
Maintenance Mode menu, the GX-6000 beeps once every user-defined
interval to confirm that it’s operating.
Performing a Bar Hole Test
1 . Start up the GX-6000 as described in “Start Up, Bar Hole Mode” on
page 216.
2 . If you wish to change the station ID, press the SHIFT ▼ (PANIC) and
DISP/LOCK buttons and release when you hear a beep. The current
station ID will be displayed and it will be flashing. If you wish to exit the
Station ID Select Screen without making any changes, press and release
the RESET button.
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