Figure 3-20: Model 3414 Ultrasonic Meter Acquisition Module wiring
6. Only connect wires for Chords A1, A2, B1 and B2 for 3412 meter applications or A1
and A2 for 3411 meter applications. The relative position of the contacts is shown
on the Acquisition Module label adjacent to the terminal block. When terminating
the connector wires, ensure that the contacts clamp on the bare wires and not on
the wire insulation. Leave the connector plugged into the Acquisition Module while
terminating the individual wires.
7. Once the transducers are wired correctly, tighten the cable gland so that the
transducer cable is held securely in place. Pull the cable back through the gland to
remove the slack and configure the cable to follow the same path of the existing
cable (seeFigure 3-19) and note in Transducer cable removal and installation.
8. Repeat Step 1 through Step 7 if you are replacing other cables.
9. Once all of the cables are replaced, dress with tie wraps (P/N 2-4-9158-001) in
groups of two; A1 and C1, D1 and B1, A2 and C2, D2 and B2. Install one cable tie
three inches from the Base Enclosure and another near the point the cables start to
bend and separate out into their respective port (see Figure 3-19).
10. Inspect the Transmitter Electronics Enclosure gasket for wear and replace it if
necessary.
11. If replacing the gasket, lubricate it with Molykote 111
(2)
(P/N 2-9-9960-135).
12. Prop the Transmitter Electronics Enclosure at an angle on top of the Base Enclosure.
13. Plug the Acquisition cable terminal block to J3 on the Acquisition Module. Use a flat
blade screw driver and securely tighten the terminal block mounting screws to the
Acquisition Module.
14. Wrap the excess cable around the Acquisition Module below the lip of the Base
Enclosure (this prevents pinching the cable when the Transmitter Electronics
Enclosure is installed).
15. Attach one desiccant pack to the underside of the Base Enclosure cover.
(2)
Molykote 111 is a trademark of Dow Corning Corporation, U.S.A.
Meter repairs Maintenance and Troubleshooting manual
June 2019 P/N 3-9000-769
84 Gas Ultrasonic Flow Meters
To Next Page
Loading...
Need help?
General
