3. Disconnect transducer cabling and chordset from the T-200 transducer stalk
assembly by turning the cable nut counter-clock wise (see
).
4. Disconnect the transducer cable nut. Pull the chordset from the transducer stalk
assembly.
Important
Do not twist the chordset as you disconnect it from the transducer assembly.
5. If the transducer housing is planned to be serviced or replaced, loosen the
transducer retainer one quarter turn by turning the retainer counter-clock wise with
a 1
⅛
" wrench. DO NOT remove the transducer retainer at this time.
6. Remove the four or six 3/8" cap screws holding the T-200 transducer assembly on
the meter body.
7. Carefully pull the T-200 transducer assembly out of port hole without damaging the
transducer housing.
8. Mark the port number, i.e. A1, ... D2, on the transducer stalk if not labeled already.
9. Place the T-200 transducer assembly in a safe place to avoid any damages to the
assembly.
3.4.2
T-200 transducer assembly installation
This procedure is for installing a T-200 transducer assembly on a meter body.
Procedure
1. Check the label marked on the stalk or the serial number on the stalk assembly to
match the intended port number on the meter body.
2. Record the lengths of T-200 transducer housing, spacer and stalk that come with
the transducer assembly calibration sheet.
3. Make sure the O-ring and backup ring are clean and properly installed. Apply a
(light) coat of D.C. 111 to the O-ring.
4. Carefully insert the transducer assembly into the port hole without damaging the
transducer housing or port hole. Make sure the serial number is facing the top.
5. Use four or six 3/8" cap screws to install the transducer assembly. Tighten the cap
screws in a cross-cross pattern so they are tightened evenly. Torque the 3/8" cap
screws to 35 ft. lbs.
6. Use a 1 1/8" wrench to bottom out the transducer retainer on the stalk.
Important
Do not torque down the transducer retainer to avoid damages to the anti-rotation
pins.
7. Connect the transducer chordset to the transducer retainer. The internal connector
of the transducer chordset is keyed and will only go on one way.
8. Secure the transducer cabling nut by turning clock wise. Ensure the cable nut
threads are correctly aligned.
Maintenance and Troubleshooting Manual
Meter repairs
00809-0600-3104
April 2022
Rosemount Gas Ultrasonic Flow Meters
61
