3.6.2
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
). The setting of a transducer capsule is indicated by the
number next to the slot where the tap is located (see
), i.e. 1, 2, ... 8. The
stalk assembly configuration is labeled on the stalk (see
), 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
c) Turn the bottom piece counter-clock wise by 90° to let the tap snap into the
correct slot. Make sure the tap is secured in the slot.
12. Hold transducer capsule vertically and apply a small amount of Acoustic Coupling
Fluid (P/N: 1-360-01-650) to the surface of Kapton tape.
13. Carefully spread the coupling fluid on the surface using the tip of the plastic bottle
for the coupling fluid.
Note
Try to avoid pressing the Kapton tape while spreading the coupling fluid.
14. Wait for 30 - 60 seconds to let the coupling fluid spread more evenly on the surface.
Maintenance and Troubleshooting Manual
Meter repairs
00809-0600-3104
April 2022
Rosemount Gas Ultrasonic Flow Meters
69
