Trace Gas Levels Detected

em2 dm 18.04.003

A steady yellow 'Trace Gas' LED indicates a gas concentration greater than 20 percent of the LEL for that gas has been detected. A sensor has to detect an excess of 20 percent LEL for two continuous seconds before this lamp will illuminate.

The yellow 'Sensor Zone' LED will flash to indicate what sensor is reporting the LEL levels. A single flash indicates zone 1, the left-hand sensor, and a double flash indicate zone 2, the right-hand sensor.

The detection of trace gas amounts will not cause the buzzer alarm to sound.

If ambient gas levels return to normal, the yellow 'Trace Gas' LED will go out and the green 'Systems Normal' LED will illuminate.

Note:
Parent topic: How the System Works
Document Number: 0000088239
Manual Publication Date: 2024-03-21
Topic Publication Date: 2024-10-01