Reference, Installation, and Operations Manual

Section 7: Maintenance and troubleshooting

3-9000-743 Rev S

June 2013

 

 

 

Section 7: Maintenance and troubleshooting

This section includes discussion of transducer replacement, meter repair and maintenance, and troubleshooting communications and meter diagnostics.

Daniel Ultrasonic Flow Meters are supplied with T-Slot transducer assemblies which are extractable while the line is pressurized.

T-Slot transducer assemblies are available on 4-inch and larger meters for the Mark III meters. The T-Slot assemblies are available on all meter sizes for the Daniel JuniorSonic™ Meters (Models 3410 and 3420). See Section 2.2.6 for the types of transducers available.

7.1Field hydrostatic pressure testing procedures

T-Slot transducer assembly and mount

1.Slowly vent all line pressure on the Daniel Mark III Ultrasonic Gas Flow Meter to atmosphere.

2.Disconnect transducer cabling from the transducer holders.

3.If installed, remove the mount cover by loosening the two mount cover screws. These screws are captive.

4.Loosen the T-Slot transducer assembly with a 1 1/4 wrench or socket. Carefully remove the T-Slot transducer assembly.

5.Place a label on the transducer assembly to marks its location (i.e., A1, A2, B1, B2, C1, C2, D1, or D2). Port locations are marked on the transducer cable as well as on cast meter housings.

6.Ensure the transducer mount threads 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 hydro-test plug (from kit P/N 1-360-01-220) and install it into the mount.

8.Repeat Steps 3 through 7 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 re-install 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 into the mounts.

Field hydrostatic pressure testing procedures

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