Emerson Rosemount 644 - Page 8

b) Ensure the transient protector power leads are
adequately secured under the transmitter power
terminal screws.
c) Verify the transient protector’s ground wire is secured
to the internal ground screw found within the universal
head.
Note
The transient protector requires the use of an enclosure of at
least 3.5-in. (89 mm) in diameter.
8. Pull the sensor wiring leads through the universal head and
transmitter center hole.
9. Mount the transmitter in the universal head by threading
the transmitter mounting screws into the universal head
mounting holes.
10. Mount the transmitter-sensor assembly into the thermowell,
or remote mount if desired.
11. Seal adapter threads with silicone tape.
12. Pull the field wiring leads through the conduit into the
universal head. Attach the sensor and power leads to the
transmitter.
Avoid contact with other terminals.
13. Install and tighten the universal head cover.
A. Threaded thermowell
B. Threaded style sensor
C. Universal head (transmitter inside)
D. Standard extension
E. Conduit entry
Quick Start Guide April2023
8 Rosemount 644