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Maintenance and Troubleshooting Manual
00809-0100-3812
15. Close your application connection (MeterLink, AMS
16. If replacing other electronics, continue with the following procedures before
17. If you are not replacing other electronics, replace the end caps and security latches
18. Apply power to the meter.
3.9.5
Replace the Power Supply Board
Procedure
1. If replacing the Power Supply board, disable electrical power to the meter.
2. Refer to
3. Disconnect the Transmitter Electronics Enclosure security seals, loosen the end cap
4. Use a 1/8 inch (3 mm) flat head screw driver and remove the terminal blocks from
5. Use a #1 Standard Phillips head screw driver and remove the four Backplane board
Rosemount 3812 Liquid Ultrasonic Flow Meter
™
AMS
Device Manager or a HART
Zero Calibration → Startmenu or Service Tools → Maintenance → Zero
Calibration → Start.
Field Communicator).
replacing the end caps and sealing the enclosure.
(3 mm Allen wrench required). If required, install the security seals (see
Junction Box for remote mount electronics
This completes the I.S. Barrier Board replacement procedure.
If you encounter problems with this procedure, see the Emerson Customer Support
contact information on the back cover of this manual.
Table 3-9
for the tools required to complete this procedure.
security latches with a 3mm Allen wrench and remove both end caps.
the Power Supply board, the CPU Module and the Optional I/O Module. See
3-57
for board locations and associated terminal blocks.
screws from the enclosure standoffs.
®
Field Communicator and select Overview →
™
Device Manager or HART
option).
Meter maintenance
April 2022
®
Seal the
Figure
99
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Troubleshooting
