MAINTENANCE
7-4
7.2 PID Sensor & Lamp Cleaning /
Replacement
The sensor module is made of several components and is
attached to the lamp-housing unit as shown in Figure 7-2.
Figure 7-2 Sensor Components
Note: Normally the cleaning procedure is not needed.
Clean the PID sensor module, the lamp and the lamp
housing only when one of the following 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 water trap filter will help prevent contamination
and accidentally drawing liquid into the sensor.
Lamp Housing
1 1/8” O’Ring
PID Sensor
Porus Metal Filter
Green Dust Filter
3/8” O’Ring
Sensor Adapter
Gas Inlet Probe
Lamp Housing Cap
Housing