94 • Bar Hole Testing
Gas Tracer Operator’s Manual, CSA Version
Use the AIR
▲
and (SHIFT)
▼
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 Gas Tracer 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.
6. At the end of the sample period, the pump will shut off and the buzzer will
sound, then the peak methane reading and the minimum oxygen reading for
the sample period will be displayed. The peak methane reading will also be
visually displayed on the graph along the left side of the screen.
0
0.0
%LEL
%
BAR HOLE MODE
CH
4
O
2
001
25
20.9
30
vol%
%
BAR HOLE MODE
sec
CH
4
O
2
MEASURE
25
19.0
%LEL
%
BAR HOLE MODE
CH
4
O
2
PEAK
PEAK
