Figure 7.1: Measurement Chamber Unit - Waltron 9065C Instruction Manual

8. Fit the two new O-rings from the oxygen sensor set in the O-ring grooves in the new
oxygen sensor and lightly lubricate the O-rings with silicon grease (from the service set).
9. Press the new oxygen sensor into the measurement chamber unit from the top until it
touches the stop and fit the O-ring at the top.
10. Carefully fit the measurement chamber unit and the new oxygen sensor into the 9065C so
that the light guide and the PT100 (temperature sensor) in the top block fall into the hole
opposite to the oxygen sensor. For the best temperature measurement, fit the PT100 using
heat conducting paste.
NOTE:
11. Use the special screwdriver from the oxygen sensor set to tighten the 4 screws crossways.
12. Fit the protective housing back on to the measurement chamber unit.
13. Use the socket screw key from the service set to tighten the 6 screws.
Waltron User Manual
9065C Portable Luminescent Dissolved Oxygen Analyzer

Figure 7.1: Measurement chamber unit.

All the O-rings must be positioned correctly to properly seal
the top block.
Troubleshooting and Repair
36