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Top Cap Assembly
1. Inspect the transducer and thermocouple ports to make sure that they are
clean and free of cement.
2. Install the thermocouple into one of the ports on the top cap of the SGSM
test cell. Tighten the thermocouple completely then loosen it ¼ of a turn.
The two ports are interchangeable.
3.
Tighten the jaws of the vice on the flats of the cell cap with the threads
faced up.
4. Insert retaining ring into the lower internal ring groove of the cell cap so
the gap clears the thermocouple as shown below.
5. Insert the diaphragm into the cell cap so the gap clears the thermocouple.
6. Insert the other internal retaining ring into the groove above the
diaphragm so the gap clears the thermocouple as shown below.
7. Place an o-ring on the cell cap.
8. Apply high temperature grease to the threads, seal ring, o-ring, and the
Retaining ring.
Retaining Ring
Groove
Thermocouple
Retaining Ring
(#120-58-38)
Diaphragm
(#120-58-23)
Retaining Ring
(#120-58-38)
Thermocouple
Low Pressure SGSM
O-Ring
(#123-011)