3-5
ALARMS
3.3 HIGH FLAMMABLE GAS OVER-RANGE ALARM
Caution: Exposing the LEL sensor to ammable gas
above 100% LEL can damage the sensor.
If the LEL gas reading exceeds 120% LEL, the displayed
value will change to four rising arrows, the tone of the audible
alarm will change, and the visual alarm will ash quickly. The
ashing message ‘DANGER’ alternates with ’OVER RANGE’,
as shown in Fig. 3.3.
Alternates with
Fig. 3.3 Over Range Alarm
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