80 • Bar Hole Testing GX-2012 Operator’s Manual
Use the AIRS and (SHIFT)T buttons to scroll to the desired station ID
and press and release POWER ENTER. The unit will return to the Bar
Hole Measuring Screen.
3. Take the GX-2012 to the bar hole that will be tested.
4. Insert the probe into the bar hole and press and release the POWER
ENTER button. The pump will turn on and the sample period will begin
with the sample period counting down in seconds in the lower right
corner of the display. The CH
4
channel will be displayed in %VOL. The
methane channel’s reading will also be displayed in graph format on the
left side of the screen. If you wish to cancel the measurement, press and
release the RESET SILENCE button.
5. After 15 seconds of sampling, if the combustible gas reading is less than
5 %VOL, the combustible gas channel will automatically begin
displaying in %LEL.
0
0.0
%LEL
%
BAR HOLE MODE
CH4
O2
001
25
20.9
30
vol%
%
BAR HOLE MODE
sec
CH4
O2
MEASURE
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