OPERATION OF THE AREARAE
2-21
Table 2.2
Alarm Signal Summary
Condition Alarm
Signal
Message on
LCD Screen
Gas or Gamma*
exceeds “High
Alarm” limit
3 beeps & flashes per
second
Sensor Name
Gas or Gamma*
exceeds “Low
Alarm” limit
2 beeps & flashes per
second
Sensor Name
Gas exceeds STEL
1 beep & flash per second
Sensor Name
Gas exceeds TWA
1 beep & flash per
second
Sensor Name
Negative Drift or
Over Range
3 beeps & flashes per
second
“NEG” or
“OVR”
Pump failure
3 beeps & flash per
second
“Pump”
LEL sensor off
3 beeps & flash per
second
LEL Sensor
name and “Off”
PID lamp failure
3 beeps & flashes per
second
“Lamp”
Low battery
1 beep & flash per minute
“Bat”
Memory full
1 beep & flash per minute
“Mem”
* AreaRAE Gamma and AreaRAE Steel only.
Alarm Signal Testing
Under normal conditions, it is possible to test the AreaRAE
LED, buzzer, and back light by momentarily pressing [Y/+]. The
buzzer beeps once, and the LED and backlight flash once to
indicate alarm signals are functioning correctly.
WARNING
Because alarm signals are disabled during PC Communication and
Calibration modes, it is highly recommended to use calibration mode
only in areas known to be non-hazardous, in order to reduce the risk
of exposure to hazardous atmospheres. PC communication must be
used only in non-hazardous locations.
