Table of Contents
Advertisement
CHAPTER
10
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
HIGH
OVR
MAX
LOW
TWA
STEL
Pump icon
flashes
Lamp
Battery icon
flashes
CAL
NEG
* MiniRAE 3000+, ppbRAE 3000+, and UltraRAE 3000+: Hygiene mode only. In Search mode,
the number of beeps per second (1 to 7) depends upon the concentration of the sampled gas.
Faster rates indicate higher concentrations.
Handheld PID Monitors
ALARM SIGNALS
Condition
Gas exceeds "High Alarm" limit
Gas exceeds measurement range
Gas exceeds electronics' maximum range
Gas exceeds "Low Alarm" limit
Gas exceeds "TWA" limit
Gas exceeds "STEL" limit
Pump failure
PID lamp failure
Low battery
Calibration failed, or needs calibration
Gas reading measures less than number stored in
calibration
3 beeps/flashes per second*
3 beeps/flashes per second*
3 beeps/flashes per second*
2 beeps/flashes per second*
1 Beep/flash per second*
1 Beep/flash per second*
3 beeps/flashes per second
3 beeps/flashes per second plus "Lamp" message
on display
1 flash, 1 beep per minute plus battery icon flashes
on display
1 beep/flash per second
1 beep/flash per second
49
Alarm Signal
User Manual
Advertisement
Table of Contents
