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GT SERIES
1 INSTRUMENT, 7 APPLICATIONS
1
Note: The Max/Min function cannot be used until the alarm is acknowledged.
2
Note: To prevent inadvertently switching monitor OFF or changing mode while
alarms are active, the user must press and hold both the LH
simultaneously for an additional 5 seconds before the mode menu appears.
4.2.6. Logging
• Automatic datalogging is active for all ranges in this mode. By default, these logs are
recorded every minute.
• Manual log - can be taken at any time.
4.2.7. Confidence Signal
Every 15 seconds during normal operation, the monitor emits a confidence beep and briefly
illuminates the bottom pair of red LEDs. This informs the user that the monitor is operational and
sampling.
4.3. Barhole Mode
This mode is used to locate underground leaks.
4.3.1. Available Ranges
• 0 - 100% LEL Methane. The following option is enabled:
– 0.1% resolution up to 10% reading
• 0 - 100% VOL Methane
4.3.2. Features
Barhole mode features:
• Timed or Non-Timed Sampling
• Pump control
• Invert Display
• Six sets of barhole readings with Viewing & Overwriting
• Backlight
• Flashlight
4.3.3. Barhole Mode Operation
After accessing the Barhole mode, user can select between timed and non-timed sampling.
18
and RH
buttons
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Revision 10
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