Emerson Rosemount 3410 Series Maintenance And Troubleshooting Manual page 50

Meter repairs
April 2022
13. Continue with
3.2.3 Replace the transformers for T-Slot transducers
The following procedure shows how to replace a transformer module. Refer to
and Figure
Procedure
1. Disconnect the transducer cable from the transducer retainer by removing the
2. Unscrew the transformer retainer from the holder using a 1 ⅛" wrench.
3. Pull the transformer module from the transducer holder assembly.
4. Apply a small amount of Molykote 111 to the O-rings on the replacement
5. Plug the replacement transformer module into the transducer holder assembly. The
6. Apply three wraps of Teflon tape to the retainer. Place over the transformer
7. Place the transformer retainer over the transformer module. Ensure the retainer
8. Plug the keyed cable into the transformer assembly and install retainer clips.
3.2.4 Modifying the calibration parameters for T-Slot
transducers
When transducer pairs, mounts, stalks or transducer holders are replaced, the
corresponding meter calibration parameters must be updated for accurate operation. This
means modifying the affected chord "L" dimension (LA... LD) (see Determining the "L"
Value below), average delay time (AvgDlyA... AvgDlyD) and delta delay time (DltDlyA...
50
problem corrected. Check for leaks again. Continue the process until there are no
leaks.
Modifying the calibration parameters for T-Slot transducers
™
the MeterLink Transducer Swap-out Wizard.
3-4.
retaining clips and pulling the cable plug straight out. Do not twist or rotate the
plug.
transformer module.
transformer is keyed and can only be installed one way.
Note
T-21 and T-41 transducers use W-01 transformers and T-22 transducers use W-02
transformers.
assembly. Ensure the retainer threads are aligned correctly and hand-tighten. Use a
1 ⅛" wrench and turn clockwise until the transformer retainer is fully seated in the
transducer holder.
Note
Do not over tighten the retainer.
threads are aligned correctly and hand-tighten. Use an 1 1/8" wrench and turn
clockwise until fully seated in the transducer holder.
Note
Do not over tighten the retainer.
Maintenance and Troubleshooting manual
Emerson.com/Rosemount
00809-0200-3104
to use
Figure 3-2