Monitoring Combustible Gases
The device can monitor these concentrations in ambient air:
| • | Methane |
| • | Combustible gases |
The device displays the combustible gas concentration in % LEL or % CH4 on the Measuring page until another page is selected or the device is turned off.
WARNING!
If an alarm activates while using the device, leave the area immediately.Remaining in the area under such circumstances can cause serious personal injury or death.
The device has two alarm set points:
| • | HIGH Alarm |
| • | LOW Alarm |
If the gas concentration reaches or exceeds the alarm set point, the device:
| • | backlight turns on |
| • | a vibrating alarm triggers |
| • | displays and flashes the Alarm symbol and either the Minimum icon (LOW alarm) or the Maximum (PEAK) icon (HIGH alarm) |
| • | enters an alarm state. |
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When a gas reading reaches 100% LEL or 5.00% CH4, the device enters a Lock Alarm state: the combustible sensor shuts down and displays “XXX” in place of the actual reading. This state can only be reset by turning the device off and on in a fresh air environment. When a gas reading falls below a defined under-range threshold, the device displays " - - -" in place of the actual reading. |
WARNING!
| • | A combustible gas reading of “100” or “5” indicates the atmosphere is above 100% LEL or 5.00% vol CH4 respectively, and an explosion hazard exists. Move away from contaminated area immediately. |
| • | In such cases, the device enters a Lock Alarm state. |
Failure to follow this warning can result in serious personal injury or death.
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Check your national standard values for 100 % LEL (EN60079-20-1). |