MiniRAE Lite User’s Guide
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, pump stall, or when the datalog memory is full.
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
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