Emerson Rosemount 644 Reference Manual page 64

Hardware Installation
March 2021
Note
Kit (part number 00644-5301-0010) includes mounting hardware and both types of rail
kits.
3.4.3 Install the device
Head mount transmitter with DIN plate style sensor
installation
A
A. Connection head cover
B. Transmitter mounting screws
C. Integral mount sensor with flying leads
D. Connection head
E. Extension
F. Thermowell
Procedure
1. Attach the thermowell to the pipe or process container wall. Install and tighten the
2. Verify the transmitter failure mode switch position.
3. Assemble the transmitter to the sensor. Push the transmitter mounting screws
4. Wire the sensor to the transmitter (see
5. Insert the transmitter-sensor assembly into the connection head. Thread the
6. If using a cable gland for power wiring, properly attach the cable gland to a housing
7. Insert the shielded cable leads into the connection head through the conduit entry.
8. Connect the shielded power cable leads to the transmitter power terminals. Avoid
64
B C D
thermowell before applying process pressure.
through the sensor mounting plate.
Note
If using a threaded type sensor with a connection head, Reference steps 1-6 below
in Head mount transmitter with threaded sensor
transmitter mounting screw into the connection head mounting holes. Assemble
the extension to the connection head by tightening the threaded connections of
the extension to the housing. Insert the assembly into the thermowell and tighten
the threaded connections.
conduit entry.
contact with sensor leads and sensor connections. Connect and tighten the cable
gland.
E F
installation.
Wiring and powering the
Emerson.com/Rosemount
Reference Manual
00809-0200-4728
transmitter).