MiniRAE Lite User’s Guide
17 Alarm Signals
During each measurement period, the gas concentration is compared
with the programmed alarm limits (gas concentration alarm limit
settings). If the concentration exceeds any of the preset limits, the
loud buzzer and red flashing LED are activated immediately to warn
you of the alarm condition.
In addition, the instrument alarms if one of the following conditions
occurs: battery voltage falls below a preset voltage level, failure of
the UV lamp, or pump stall.
Alarm Signal Summary
Message Condition Alarm Signal
HIGH Gas exceeds “High Alarm”
limit
3 beeps/flashes per second
OVR Gas exceeds measurement
range
3 beeps/flashes per second
MAX Gas exceeds electronics’
maximum range
3 beeps/flashes per second
LOW Gas exceeds “Low Alarm”
limit
2 beeps/flashes per second
Pump
icon
flashes
Pump failure 3 beeps/flashes per second
Lamp PID lamp failure 3 beeps/flashes per second plus
“Lamp” message on display
Battery
icon
flashes
Low battery 1 flash, 1 beep per minute plus
battery icon flashes on display
CAL Calibration failed, or needs
calibration
1 beep/flash per second
NEG Gas reading measures less
than number stored in
calibration
1 beep/flash per second
24
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