Emerson Rosemount 644 Reference Manual page 67

Reference Manual
00809-0200-4728
Rail mount transmitter and sensor
A
B
A. Rail mount transmitter
B. Sensor leads with cable glands
C. Integral mount sensor with terminal block
D. Connection head
E. Standard extension
F. Threaded thermowell
Procedure
1. Attach the transmitter to a suitable rail or panel.
2. Attach the thermowell to the pipe or process container wall. Install and tighten the
3. Attach the sensor to the connection head and mount the entire assembly to the
4. Attach and connect sufficient lengths of sensor lead wire from the connection head
5. Tighten the connection head cover. Enclosure covers must be fully engaged to
6. Run sensor lead wires from the sensor assembly to the transmitter.
7. Verify the transmitter failure mode switch.
8. Attach the sensor wires to the transmitter.
Emerson.com/Rosemount
thermowell, according to plant standards, before applying pressure.
thermowell.
to the sensor terminal block.
meet explosion-proof requirements.
C
D
E
F
Hardware Installation
March 2021
67