GT SERIES
1 INSTRUMENT, 7 APPLICATIONS
20
67112
Revision 10
4. BARHOLE 1 is displayed as shown in
.
Figure 26: Barhole 1 & Timer
5. Up to six barhole readings can be stored. These are identified as 'BARHOLE 1' to 'BARHOLE
6'. User can specify where the next reading is stored by pressing the UP
and DOWN
buttons. This allows previous readings to be overwritten.
6. Press and hold START button to begin sampling. This will start the timer and pump. After
sampling is completed, the pump switches OFF and the peak and actual (sustained) readings
are displayed as shown in
Figure 27: Barhole Readings
7. Between Barhole tests there is a Purge that removes any residual gas from the monitor before
the next barhole is sampled. When complete, the peak reading is blanked from the display, as
Figure 28: Purge Complete
4.3.3.2. Non-Timed Sampling
Non-timed sampling operates like Timed, except the user is required to stop the sampling by
pressing the STOP
button. See
monitor to sample for 10s.
Note: The minimum purge time is ten seconds.