Riken Keiki GM-600, Руководство по эксплуатации

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6. Alarm Activation and Functions 6-1. Gas alarm activation
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<Alarm Display (ALM1: Yellow Backlight), (ALM2: Red Backlight)>
The alarm consists of two steps. The yellow or red backlight lights up when the respective alarm setpoint
value is reached to or exceeded.
Contact activation
The contact is activated when the gas concentration reaches or exceeds the alarm setpoint value. The
contact activation is reset automatically when the gas concentration drops below the alarm setpoint value.
Response to gas alarm (In case of responding to leaked gas)
When a gas alarm is triggered, take actions in accordance with your management rules of gas alarm.
Normally, take the following actions.
- Check the reading of the monitor.
- If the gas alarm display continues to be displayed, close the main valve of the gas, and then check
that the gas concentration reading is back to normal.
NOTE

If a gas leak is momentary, the reading may already be back to normal when checking it. In addition,
when the alarm is triggered by noise or other incidental conditions other than a gas, the reading may
have already returned to normal.
WARNING

If the MODE or SET button is pressed to enter another mode while an alarm is triggered, the
contact activation is reset.
CAUTION

If the monitor enters maintenance mode while a gas alarm is triggered, and if it returns to the
detection mode while gas still exists, it does not trigger any alarms for about 15 minutes and cannot
check if gases exist.
Alarm lamp (ALM1)
First alarm setpoint
"Alarm pattern (H-HH)"
Second alarm setpoint
Alarm lamp (ALM2)
Alarm contact (Terminal plate 3, 4)
Concentration
Alarm delay time (2 seconds)
Time
Alarm delay time (2 seconds)