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6-3 Gas alarm
6-3-1 Operations
RI-2000W will operate as the following when it detects gas concentration higher than
the alarm set point.
1. Indications
LED lamps
WARNING lamp: will activate when the gas concentration exceeds the
1st alarm set point.
ALARM lamp: will activate when the gas concentration exceeds the
2nd alarm set point.
Messages on the LCD
The current gas concentration will be indicated on the display. The screen will
indicate “OVER” when the gas concentration exceeds the detecting range.
Power lamp
The lamp will keep on while the instrument is on.
2. Output operations
4-20mA output
Ratiometric current of electricity will be put out depending on the gas
concentration. The maximum output is approximately 22mV (exceeds full range).
Gas alarm contact
The alarm contact will activate when the gas concentration exceeds the alarm set
point. The operations it takes is latching or non-latching.
an example of the alarm pattern
