Emerson Rosemount 644 Reference Manual page 63

Reference Manual
00809-0200-4728, Rev RA
Rail mount transmitter and sensor
1.
2.
3.
4.
5.
6.
7.
8.
Hardware Installation
Attach the transmitter to a suitable rail or panel.
Attach the thermowell to the pipe or process container wall. Install and tighten the
thermowell, according to plant standards, before applying pressure.
Attach the sensor to the connection head and mount the entire assembly to the
thermowell.
Attach and connect sufficient lengths of sensor lead wire from the connection head to
the sensor terminal block.
Tighten the connection head cover. Enclosure covers must be fully engaged to meet
explosion-proof requirements.
Run sensor lead wires from the sensor assembly to the transmitter.
Verify the transmitter failure mode switch.
Attach the sensor wires to the transmitter.
C
A
B
D
B
E
F
A. Rail mount transmitter
B. Sensor leads with cable glands
C. Integral mount sensor with terminal block
Section 3: Hardware installation
D. Connection head
E. Standard extension
F. Threaded thermowell
April 2015
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