Electrical Considerations; Conduit Installation; Wiring - Emerson Rosemount 3051 Reference Manual

Installation
May 2017
3.9

Electrical considerations

Note
Make sure all electrical installation is in accordance with national and local code requirements.
3.9.1

Conduit installation

If all connections are not sealed, excess moisture accumulation can damage the
transmitter. Make sure to mount the transmitter with the electrical housing positioned
downward for drainage. To avoid moisture accumulation in the housing, install wiring with
a drip loop, and ensure the bottom of the drip loop is mounted lower than the conduit
connections or the transmitter housing.
Recommended conduit connections are shown in
Figure 3-14. Conduit Installation Diagrams
A. Possible conduit line positions
B. Sealing compound
C. Conduit lines
3.9.2

Wiring

Do not connect the power signal wiring to the test terminals. Voltage may burn out the reverse-polarity
protection diode in the test connection.
Note
Use shielded twisted pairs to yield best results. To ensure proper communication, use 24 AWG or larger
wire, and do not exceed 5000 ft (1500 m).
46
Correct
A
B
Figure 3-14.
Correct
B
A
Reference Manual
00809-0100-4001, Rev KA
Incorrect
C
Installation