AirLink 6940XP Operator’s Manual
Maintenance
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15. Screw the sensor housing cap back onto the sensor housing base, ensuring that the sensor
housing cap is only tightened hand tight.
16. Press
ADD
to initiate the 1-minute startup (3.5 minutes for LEL versions).
17. Wait 10 minutes and then zero and calibrate the detector as described on page 35.
Replacing the PID Electrode Stack
WARNING: Do not remove the sensor housing cap or enclosure lid while the circuits are
energized unless the area is determined to be non-hazardous. Keep the sensor
housing cap and enclosure lid tightly closed during operation.
CAUTION:
The internal components can be static sensitive. Use caution when opening the
enclosure and handling internal components. DO NOT use any metal objects or
tools to remove the sensor.
The electrode stack can last for the life of the PID sensor if the AirLink 6940XP is used in a very
clean, controlled environment. When used in a heavily contaminated or dirty environment, the
electrode stack may only last a month. A contaminated electrode stack will cause a drop in
sensitivity which can cause problems calibrating the PID channel. The electrode stack should be
replaced if the PID sensor shows signs of contamination even after cleaning or replacing the lamp.
NOTE:
Do not touch the new lamp window (the flat end) with your fingers as this may
contaminate the window with finger oil.
1. Press and hold
SUB
for approximately 6 seconds until “OFF” shows on the display screen.
