Emerson Rosemount 3410 Series Maintenance And Troubleshooting Manual page 52

Meter repairs
December 2023
7. Mark the port number, i.e. A1, ... D2, on the transducer stalk if not labeled already.
8. Place the T-200 transducer assembly in a safe place to avoid any damages to the
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
2. Record the lengths of T-200 transducer housing, spacer and stalk assembly that
3. Ensure the O-ring and backup ring on the transducer stalk are clean and properly
4. Carefully insert the transducer assembly into the port hole without damaging the
5. Use four or six ⅜-in. cap screws to install the transducer assembly. Tighten the cap
6. If the transducer retainer has been hand-tightened after servicing or replacing the
7. Align the keyed transducer cable plug and securely seat into the transducer retainer,
3.4.3 Modifying the calibration parameters for T-200
transducers
When T-200 transducer pairs, housings or stalks 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... DltDlyD) using the MeterLink
Transducer Swap-out Wizard (see
Generally, there are three types of situations that require updating delay times or both
delay times and length L:
• Replacing T-200 transducer capsules only: Need to update delta delay time only. No
change in length L.
• Replacing T-200 transducer capsules and housings: Need to update average and delta
delay times, and length L.
• Replacing full T-200 transducer assemblies, including capsules, housings and stalks:
Need to update average and delta delay times, and length L.
Procedure
1. Update average delay time and delta delay time. The transducer pair average delay
52
Place the T-200 transducer assembly in a safe place to avoid any damages to the
assembly.
assembly.
match the intended port number on the meter body.
come with the transducer assembly calibration sheet.
installed. Apply a (light) coat of D.C. 111 to the O-ring.
transducer housing or port hole. Ensure the serial number is facing the top.
screws in a criss-cross pattern so they are tightened evenly. Torque the ⅜-in. cap
screws to 35 ft. lbs.
transducer housing, use a 1 ⅛-in. wrench to bottom out the transducer retainer
on the stalk. DO NOT torque down the transducer retainer. Doing so will avoid
damages to the anti-rotation pins.
and secure with retaining clips.
time and delta delay time are located on the transducer pair calibration sheet.
These values must be downloaded to the appropriate meter data points (AvgDlyA...
AvgDlyD, DltDlyA... DltDlyD).
Maintenance and Troubleshooting manual
Figure 3-5).
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