GD-70D - 41 -
6
Detection Mode
6-1 Gas Alarm Activation
A gas alarm is activated when the concentration of detected gas reaches or exceeds the alarm setpoint.
This section describes alarms assuming an auto-reset operation.
NOTE
The alarm setpoint (first alarm and second alarm) is factory set.
The alarm delay time (standard: 2 seconds) is enabled in the detector to prevent a false activation. It can
be disabled, if desired.
<Display Operation During Alarm Condition>
Gas Concentration Display
The gas concentration is displayed on the LCD. If the concentration is above the detection range (over
scale), "∩∩∩∩" is displayed on the LCD instead of the gas concentration.
Alarm Indicator Lamp (ALM1: Red), (ALM2: Red)
When the first alarm setpoint has been reached, the ALM1 LED turns red.
When the second alarm setpoint has been reached, the ALM2 LED turns red.
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