MiniRAE 3000/ppbRAE 3000 Pocket Reference
33
Alarm Signal Summary
If the measured gas concentration exceeds any of the preset
limits, the buzzer and red flashing LED are activated
immediately to warn you of the alarm condition. The
instrument also alarms if one of the following conditions
occurs: battery voltage falls below a preset voltage level,
failure of the UV lamp, or pump stall.
Mess-
age
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*
TWA
Gas exceeds “TWA”
limit
1 Beep/flash per second*
