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4. Modes of Operation
4.1. Leak Test Mode
Note: The monitor pump must be switched ON to perform correct measurement in
Leak Test mode.
This mode is used by technicians to investigate odour or leak complaints and pinpoint leaks.
4.1.1. Available Ranges
• 0 – 2000 ppm Methane. Two options are available:
– 100 ppm dead band
– display PPM only - no values on screen
• 0 – 100% LEL Methane
• 0 – 100% VOL Methane
• 0 – 2000 ppm Carbon Monoxide (CO) if fitted.
4.1.2. Features
Leak Test mode features:
• Audible / Visual PPM Ticker (Geiger) alarm
• Ticker threshold adjustment
• Audible / Visual Gas Alarms
• Pump ON / OFF (will stop automatically if flow fault is detected)
• Max Display
• Methane autoranging (ppm to LEL to Vol)
• Display Invert
• Automatic datalogging
• Backlight
• Flashlight
4.1.3. Display
67112
Revision 10
Figure 17: Methane Only Display
GT SERIES
1 INSTRUMENT, 7 APPLICATIONS
13
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