49391
Revision 3
25
Gasurveyor 700
USER MANUAL
4.1.6 Barhole Testing
Barhole testing is available only in Gas Leak Outdoors (GLO) mode.
Barholes are small holes, inserted in the ground to assist with pin-pointing a gas leak from an
underground gas pipe. Readings are obtained by placing a probe into the barhole.
The GS700 stores the following measurements when barhole testing:
• LEL / Volume gas readings (peak and sustained)
• Time & Date
• GPS location
Note: Alarms and pump control are disabled during a barhole test.
To perform barhole testing:
1. Ensure mode is Gas Leak Outdoor (GLO).
2. Press
B/H
button (as shown in
Figure 27: B/H button
)
Figure 27: B/H button
3. Press
Yes
button to start new series of readings.
Press
No
button to continue with a previous series.
Figure 28: Barhole - Screen 1
Yes
button clears the current barhole series and starts new one with ‘Barhole number 01’ on
the next screen (as shown in Figure
29: Barhole - Screen 2
).
No
button will keep the existing data. The next screen will display the next barhole number
without data (as shown in Figure
30: Barhole - Screen 3
).
Note: Each series can store up to 25 barhole numbers.
