Emerson Rosemount 5300 Series - Replace the Transmitter Head

b) Cycle the power to the HMC to exit the Modbus RTU communication mode.
7.12 Replace the transmitter head
Prerequisites
Note
If the transmitter head must be removed from the probe, make sure that the process seal
is carefully protected from dust and water.
Figure 7-35: Transmitter Head Replacement
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A. Flanged version
B. Nut
C. Process Seal
D. Put the protection plug here!
E. Threaded version
F. Adapter
Procedure
1. Loosen the nut that connects the transmitter head to the process seal.
2. Carefully lift the transmitter head.
3. On the probe, make sure that the upper surface of the process seal is clean and free
from dust and water. Wipe it clean with a dry and lint-free cloth.
4. Verify the spring-loaded pin at the center of the process seal is properly inserted.
When inserted properly only the plunger is seen above the edge inside the seal hole.
Note
Do not remove the process seal from the adapter!
Reference Manual Service and troubleshooting
00809-0100-4530 April 2019
Reference Manual 237