User's Manual

AreaRAE Plus & AreaRAE Pro User’s Guide
78
Sensor Locations
Location
Sensor type(s)
1
4R+ EC --- O
2
2
4R+ EC or 4R+ PID
3
4R+ EC (avoid using O
2
sensor in this slot)
4
4R+ EC
5
4R+ EC or LEL
6
4R+ EC (avoid using O
2
sensor in this slot)
7
7R+ sensors
8
7R+ sensors
Note: The AreaRAE Plus/Pro does not allow duplicate sensors (that is, two or more of the same kind,
including, for example, a 4R+ PID and a 7R+ PID) to operate simultaneously. Therefore, if duplicate
sensors are inserted in the slots, when the instrument is turned on, it automatically senses the redundancy
and only allows operation of one of the sensors, selecting the sensor in the location with the lowest
number.
WARNING!
If you are removing a sensor and not replacing it, its slot cannot be left empty. A “dummy” sensor must
be installed in the empty slot.
17.4 Cleaning Or Replacing The PID
Note: The cleaning procedure is not normally needed. Clean the PID sensor module, the lamp and the
lamp housing only when one of the following has happened:
1. The reading is inaccurate even after calibration.
2. The reading is very sensitive to air moisture.
3. A chemical liquid has been sucked into the unit and damaged the unit.
Use of the external filter helps to prevent contamination of the sensor.