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Reference, Installation, and Operations Manual Section 7: Maintenance and troubleshooting
3-9000-743 Rev S June 2013
Installing the transducers 267
7. Loosen the T-Slot transducer holder assembly with a 1 1/4” socket. Carefully remove
the T-Slot transducer assembly.
8. Loosen the three Allen setscrews with a 1/16” hex driver securing the transducer
assembly and stalk, if installed. Carefully remove the old transducer by pulling it from
the T-Slot transducer holder assembly without rotating.
Important
Record the “L” dimension of the removed transducers which is used to update the meter
configuration after all of the transducers are replaced. Make sure you have the report sheet
containing the “L” dimension, Delay Time, and Delta Delay Time for the replacement pair of
transducers to use during the Transducer Swap-out procedure in Daniel MeterLink.
9. Clean the transducer holder with a dry cloth.
7.2.3 Installing the transducers
1. Ensure that the Daniel 3400 Series Gas Ultrasonic Flow Meter transducer port, mount,
and T-Slot transducer holder assembly are clean and free of debris.
2. Apply a small amount of Molykote 111to the female contacts on the transducer.
3. Install the transducer assembly into the transducer holder or into the stalk (if required).
The parts are keyed and can only be assembled one way. As the transducers are
installed into the holder or stalk assembly, they must be labeled with a marker for future
reference (i.e., transducer #1 would be A-1 and transducer #2 would be A-2).
4. Use a 1/16” hex driver to equally tighten the three Allen set screws on the transducer
holder to secure the transducer assembly and the stalks (if installed).
Figure 7-6 Transducer holder, stalk and transducer assembly
Note: Do not apply lubricant to the transducer or stalk O-rings.
A.
B.
C.
A. Transducer holder
B. Stalk
C. Transducer assembly
Ensure that the transducers identified as belonging to end 1 are installed on end 1 of the
meter housing and those identified as belonging to end 2 are installed on end 2 of the meter
housing.