GS700 USER GUIDE
18
Barhole Testing
Barhole testing is contained within GLO mode.
Barholes are small holes placed, in the ground, along the route of an underground gas pipe. Gas
leak detection is performed by placing a probe into the barhole.
The GS700 stores the following measurements when barhole testing:
• LEL / Volume Gas readings - peak and sustained
• Time and date
• GPS location
i
Alarms and pump control are disabled during a
barhole test.
To perform barhole testing:
1. Ensure the instrument is set to GLO mode.
2. Press
B4 for additional functions.
3. Press
B2 to select barhole testing (B/H).
4. Press
B1 to start a new barhole series.
Press
B4 to continue with a previous series.
5. Press
B1 to start at ‘Barhole number 01’.
To display different barhole numbers, press button
B2
and
B3 to move through the barhole numbers.
Press B4 to exit.
i
Each series can store up to 25 barhole numbers.
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