Figure 3-66: Acquisition Module cable and transducer wiring
A. Transducer wiring terminal blocks
B. Acquisition cable
C. Acquisition Module
D. Base Enclosure o-ring
NOTICE
Ensure the transducer cables are labeled for the chord configuration (A1, A2, B1 and
B2).
8. Remove the three Acquisition Module flat head screws and split lock washers, then
remove the Acquisition Module from the Base Enclosure or the Junction Box.
9. Insert the new Acquisition Module into the Base Enclosure and secure with the three
split lock washers and flathead screws.
10. Reattach the terminal blocks onto the Acquisition Module 1/8 inch (3 mm) flat head
screw driver for the corresponding transducer (A1, B1, A2, or B2). Make sure the
transducer wires have good contact with the terminal block and the terminal block
screws are tight.
11. When you have completed attaching the terminal blocks to the Acquisition Module,
check the Base Enclosure or Junction Box O-ring seal and reinstall if necessary.
12. Reattach the Transmitter Electronics Enclosure to the Base Enclosure with the four
hex head bolts and lock washers. Tighten bolts with a 7/16 inch (11mm) wrench.
For the remote mount electronics option, lift the Transmitter Electronics Enclosure
and the Base unit to the its original height and retighten the mounting bracket
bolts.
13. Retighten or reattach the conduit to the Transmitter Electronics Enclosure using a
crescent wrench or channel lock pliers. Apply conduit sealing compound according
to manufacturer’s recommendations.
Maintenance and Troubleshooting Manual
Meter maintenance
00809-0100-3812
April 2022
Rosemount 3812 Liquid Ultrasonic Flow Meter
105
