6. Alarm Activation
6-1 Gas (oxygen) alarm pattern
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6
Alarm Activation
6-1 Gas (oxygen) alarm pattern
6-1-1 Alarm Activation
The product issues an alarm when the detected gas or oxygen concentration reaches or exceeds the
alarm setpoint. (Auto reset or self-latching)
NOTE
The alarm setpoints (first and second alarms) and alarm pattern (auto reset or self-latching) are set
at the factory before shipping.
An alarm delay (default setting: two seconds) is set to prevent accidental alarm activation. This
should be canceled if not required. (Refer to ‘7-9-3 Alarm delay time setting (ALM DLY)’.)
<Gas concentration display>
The display at the sensor mounting position where the alarm is occurring blinks. (The first alarm flashes once
every 2 seconds, the second alarm flashes once every 1 second)
If the detection range is exceeded (full scale over), [OVER] will appear on the LCD.
<Power/alarm lamp display>
The alarms are two-step alarms. The alarm lamps light up when the corresponding alarm setpoint is
reached or exceeded.
Alarm lamp (ALM1) and alarm lamp (ALM2) light up (red) as indicated below.
The power lamp (POWER) continues to light up (green).
<First alarm>
<Second alarm>
ALM1 lights up (red)
ALM1 and ALM2 light up (red)
Содержание GD-84D-EX Series
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