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Installation
July 2018
5. To verify the correct installation of Integral Transient Protection (option code T1) on the Rosemount
644 device, confirm the following steps have been completed:
a. Ensure the transient protector unit is firmly connected to the transmitter puck assembly.
b. Ensure the transient protector power leads are adequately secured under the transmitter power
c. Verify the transient protector's ground wire is secured to the internal ground screw found within
Note
The transient protector requires the use of an enclosure of at least 3.5-in. (89 mm) in diameter.
6. Pull the sensor wiring leads through the universal head and transmitter. Mount the transmitter in the
universal head by threading the transmitter mounting screws into the universal head mounting
holes.
7. Seal adapter threads with thread sealant.
8. Pull the field wiring leads through the conduit into the universal head. Wire the sensor and power
leads to the transmitter (see
other terminals.
9. Install and tighten the universal head cover. Enclosure covers must be fully engaged to meet
explosion-proof requirements.
A. Rosemount 644 Transmitter
B. Universal junction box
C. Threaded style sensor
48
terminal screws.
the universal head.
E
"Wiring and powering the transmitter" on page
D
C
D. Extension
E. Threaded thermowell
Reference Manual
00809-0200-4728, Rev SA
55). Avoid contact with
A
B
Installation
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