4. Alarm Functions 4-1. Gas alarm types and alarm setpoints
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4
Alarm Functions
4-1. Gas alarm types and alarm setpoints
A gas alarm is triggered if the concentration of the detected gas reaches or exceeds the alarm setpoints shown in the
following table. (Self-latching)
Gas alarm types include the first alarm (WARNING), second alarm (ALARM), third alarm (ALARM H), and OVER alarm
(OVER).
Alarm type
First alarm
(WARNING)
Second alarm
(ALARM)
Third alarm
(ALARM H)
OVER alarm
(OVER)
Measured
gas name
Oxygen 18.0 % 18.0 % 25.0 % 40.0 %
OX G
O
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