25
Over scale
The display will indicate “OVER” if the concentration
exceeds full scale.
Gas alarm condition
Gas alarms will activate if the gas concentration exceeds
the 1st or 2nd alarm set point. The gas concentration will
be displayed and the LED indicators will flash.
(1st gas alarm) (2nd gas alarm)
Trouble
The power LED will flash if there is any trouble detected
on the instrument. The matter will be displayed on the LCD.
Messages on the LCD Trouble that occurred
FAIL SYSTEM there is a failure in the system
FAIL SENSOR there is a failure on the sensor
FAIL ZERO the zero point is abnormal
N20 : OVER ppm
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PW AL1 AL2 MNT
N20 : 50 ppm
N20 : 100 ppm
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PW AL1 AL2 MNT
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PW AL1 AL2 MNT
FAIL SENSOR
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PW AL1 AL2 MNT
