4. Loosen the T-Slot transducer assembly with a 1 1/4 inch (32 mm) socket. Carefully
remove the T-Slot transducer assembly.
5. Place a label on the transducer assembly to marks its location (i.e., Model 3414-A1,
A2, B1, B2, C1, C2, D1, or D2; 3412-A1, A2, B1, B2; or 3411-A). Port locations are
marked on the transducer cable as well as on cast meter housings.
6. Inspect the transducer mount threads and ensure they are clean and free of debris.
7. Apply a small amount of Nickel antiseize compound (P/N 3-9960-134) to the
threads of the Hydrotest plug (P/N 1-360-01-212) from kit (P/N 1-360-01-220) and
install it into the mount. JuniorSonic kit part numbers are listed below.
• JuniorSonic
™
SP Field Hydrotest Kit (P/N 1-360-01-221)
• JuniorSonic
™
DP Field Hydrotest Kit (P/N 1-360-01-222)
8. Repeat Step 1 through Step 6 for the other transducer(s) being careful to note the
location of each transducer in the meter assembly.
9. Run the field hydrostatic test.
10. Reverse the steps above to reinstall the transducers into their appropriate ports.
Before reinstalling the transducer assemblies, ensure the transducer ports, mounts,
and transducer holders are clean and free of debris. Apply a small amount of Nickel
antiseize compound to the outer threads of the transducer holders before installing
them into the mounts.
3.3 T-Slot transducer removal and installation
procedures
The T-Slot transducer assembly offers improved transducer alignment and superior
acoustic isolation between the transducer and the meter housing. The net result is
improved performance and stability. The assembly is used on Daniel 3414, 3410 and 3411
meters and is line pressure vented. The gas temperature ranges are as show in Table 3-1.
Temperature ranges for transducers, mounts and holdersTable 3-1:
Transducer type Temperature range Mount and holder type
T-11 -20 °C to +100 °C (-4 °F to
212 °F)
Standard mounts/Holders,
NBR O-ring Inconel mounts/
316L Holders,
NBR O-ring Inconel Mounts/In-
conel Holders/FKM O-ring
T-12 -20 °C to +100 °C (-4 °F to
212 °F)
Standard mounts/Holders,
NBR O-ring Inconel mounts/
316L Holders,
NBR O-ring Inconel Mounts/In-
conel Holders/FKM O-ring
Meter repairs
Maintenance and Troubleshooting manual 45
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