Honeywell Sensepoint XCD RTD Technical Manual page 37

Sensepoint XCD RTD Technical Manual
Replacing the Sensor Cartriage
1. Unscrew and remove the filter housing/retainer (or accessory if fitted) from the
sensor.
2. Remove the old internal hydrophobic assembly by pushing against the snap fit,
through one of the retaining slots, with a small flat bladed screwdriver.
The assembly will pop out.
Caution: Do not attempt to lever the assembly out as this may damage the housing.
3. Remove the internal metal gauze insert.
4. Open the enclosure by unscrewing the sensor cap assembly from the sensor main
body.
Ensure that the electrochemical cell does not rotate with the cap.
5. Gently pull the old electrochemical cell from the PCB.
See the subsequent note about replacing the Oxygen Sensor Cartriage
Caution: Dispose of the electrochemical cell in accordance with local regulations.
6. Remove the new cell from its packaging and remove the shorting link across the
base of cell.
7. Plug the new cell into the PCB.
Note: For Oxygen Sensepoint, unscrew the old cell connections, then screw in the
new one.
8. Screw the sensor cap assembly back onto the sensor main body.
9. Fit the new internal metal gauze assembly.
10. Fit the new internal hydrophobic assembly.
Note: The sensor should now be calibrated. Re-calibration should only be attempted
by qualified service personnel.
11. Replace the filter housing/retainer or accessory.
12. In the event of an apparatus failure, return unit to Honeywell Analytics.
Ensure that the same Gas Type and Range of Sensor is fitted in place of the old Sensor.
WARNING
The manufacturer's instructions should be observed.
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SPXCDHMRTEN Issue 1