5. Hold the transducer stalk vertically with the transducer housing facing up.
6. Place the housing removal tool on the top of the transducer housing.
7. Press the tool down while using a flat-head screw driver to release the retaining ring
(see Figure 3-18).
Note
Do not lose the retaining ring that will be popped by the wave spring.
8. Remove the washer and wave spring from the transducer housing.
9. Remove the transducer housing from the stalk.
10. Place the stalk upward on a flat table and do not lose the PAI spacer inside the stalk.
3.7.2 T-200 transducer housing installation
This procedure is for installing a T-200 transducer housing into a transducer stalk and
restoring the transducer assembly in a meter body.
Procedure
1. Clean the transducer housing and the transducer stalk.
2. Replace the two O-rings on the transducer housing and apply a small amount of
Molykote 111 to the O-rings.
3. Make sure the PAI spacer is inside the stalk.
4. Slowly insert the transducer housing into the stalk until the housing is seated flat
against the PAI spacer.
5. Put the wave spring over the housing.
6. Put the washer over the housing.
7. Put the retaining ring on the top of the washer.
8. Press down the housing removal tool while securing the retaining ring.
WARNING
Ensure that the retaining ring is fully engaged into the slot to prevent unintended
ejection during meter operation.
9. Ensure that the transducer stalk, retainer and capsule are clean and free of debris.
10. Record the serial number of the transducer capsule to be installed and make sure it
is correct for the intended transducer assembly.
11. Ensure that the setting of the transducer capsule matches the stalk assembly
configuration (see Table 3-3). The setting of a transducer capsule is indicated by the
number next to the slot where the tap is located (see Figure 3-15), i.e. 1, 2, ... 8. The
stalk assembly configuration is labeled on the stalk (see Figure 3-16), next to its
serial number, i.e. -01, -02, ... -13. If adjustment is needed:
a) Use one hand to hold the top piece of the capsule and the other hand to hold
the bottom piece of the capsule.
b) Turn the bottom piece clock wise by 90 °and slide it inside the top piece to
proper position according to Table 3-3.
Meter repairs Maintenance and Troubleshooting manual
June 2019 P/N 3-9000-769
80 Gas Ultrasonic Flow Meters
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