3.5.2 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 criss-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.
Note
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 of 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.
3.5.3
Modifying the calibration parameters
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 3-8).
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
time and delta delay time are located on the transducer pair calibration sheet.
Maintenance and Troubleshooting manual Meter repairs
P/N 3-9000-769 June 2019
Maintenance and Troubleshooting manual 73
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