23
BAR HOLE TEST
For percent volume equipped units
To assist pinpointing the location of underground leaks, the Bar Hole
Test feature may be used. This feature will draw a timed sample (45
seconds) and display sustained and peak readings.
NOTE: Use an approved barhole probe with filter to prevent damage
to the instrument when conducting bar hole surveys.
To Conduct a BAR HOLE Test:
Prior to the test, attach the approved bar hole probe to an operating
instrument. Block the inlets of the probe to test for any air leakage. The
instrument will show FLOW BLOCKED in approximately 10 seconds if
all seals are good. If flow block is not detected, check the integrity of
the “O” ring seals and connections on the probe and instrument. If flow
block can not be achieved, contact the factory for assistance. An air tight
system is crucial for accurate readings.
From the working display, press & release the TICK/MENU BUTTON (B).
SELECT TEST will appear on the top line of the display. Press SAVE/
ZERO BUTTON (C) to BH Test. Press & release TICK/MENU BUTTON
(B) to enter the BH menu. Insert the bar hole probe into the location for
the survey. Press and release TICK/MENU BUTTON (B) once more to
start the test. A 45 second countdown for the test will begin. The current
percent of gas by volume detected will be displayed on the left. The
peak percent of gas by volume detected will be displayed on the bottom.
At the conclusion of the test, the pump will shut off and any sustained
and peak readings will be shown and recorded.