8. 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 assembly that
come with the transducer assembly calibration sheet.
3. Make sure the O-ring and backup ring on the transducer stalk 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 criss-cross pattern so they are tightened evenly. Torque the 3/8" cap
screws to 35 ft. lbs.
6. If the transducer retainer has been hand-tightened after servicing or replacing the
transducer housing, use a 1 1/8" wrench to bottom out the transducer retainer on
the stalk. DO NOT torque down the transducer retainer to avoid damages to the
anti-rotation pins.
7. Align the keyed transducer cable plug and securely seat into the transducer
retainer, and secure with retaining clips.
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
Daniel MeterLink Transducer Swap-out Wizard (see Figure 3-4).
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".
Maintenance and Troubleshooting manual Meter repairs
P/N 3-9000-791 August 2021
Maintenance and Troubleshooting manual 59
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