MAINTENANCE FOR AREARAE
6-3
6.2 Sensor Replacement
The toxic, combustible and oxygen sensors all have an
expected operating life. Under normal operating condition,
most sensors will lose their original sensitivity after the
expected operating life and will need to be replaced.
Each sensor module in AreaRAE and AreaRAE Gamma
includes a non-volatile memory, which records the
manufacturing date of the sensor. In the diagnostic mode, the
microprocessor will check the date code and display the
expiration date of each sensor. It is suggested that the user
should replace the sensor when the current date exceeds the
expiration date of a sensor.
Sensor Replacement Procedure
The oxygen and combustible sensor both have unique sensor
sockets in the AreaRAE. The toxic sensor socket in the
AreaRAE allows plugging in any sensor selected from the
series of toxic sensors offered by RAE Systems Inc.
1. Turn AreaRAE off.
2. Remove the battery pack. (See Section 3.2:
Interchangeable Battery Packs.)
3. Open the monitor by removing the four hex screws that
hold the front and back housing together:
