Instruction Manual

748467-A January 2002

Model MicroCEM

position of the O-ring and window in the upper compartment.

The new photodiode should be slowly inserted into the housing while gradually rotating the body. This allows the O-ring to properly seat. Continue replacing screws, washers, thermistors, etc., with the thicker shim (washer) on the opposite side of the socket from the thermistor.

Replace the lower section of the housing, then the bottom cover, insulator and bracket with the shoulder washers and screws.

Re-tighten the screws in the Reaction Chamber (upper section). Replace the top cap and its screws.

To reinstall in the Analyzer Module, reverse the procedure for removal as indicated above.

 

Sapphire

 

Window

Photodiode

Reaction

 

Chamber

 

Thermistor

 

Assembly

Sample

Ozone

Exhaust

Photodiode Socket

 

Assembly

Detector Mounting

Bracket

Figure 5-4. Chemiluminescense Detector Assembly

5-6

Maintenance and Service

Rosemount Analytical Inc. A Division of Emerson Process Management