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Reference Manual
00809-0200-4728, Rev RA
Section 3: Hardware installation
April 2015
Hardware Installation
3.4.3 Install the device
Head mount transmitter with DIN plate style sensor installation
1. Attach the thermowell to the pipe or process container wall. Install and tighten the
thermowell before applying process pressure.
2. Verify the transmitter failure mode switch position.
3. Assemble the transmitter to the sensor
(1)
. Push the transmitter mounting screws
through the sensor mounting plate.
4. Wire the sensor to the transmitter (see “Wiring and powering the transmitter” on
page 64).
5. Insert the transmitter-sensor assembly into the connection head. Thread the
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.
6. If using a cable gland for power wiring, properly attach the cable gland to a housing
conduit entry.
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
contact with sensor leads and sensor connections. Connect and tighten the cable
gland.
9. Install and tighten the connection head cover. Enclosure covers must be fully engaged
to meet explosion-proof requirements.
(1) If using a Threaded type sensor with a connection head, Reference steps 1-6 below in “Head mount transmitter with threaded sensor
installation” on page 51.
A. Connection head cover
B. Connection head
C. Thermowell
D. 644 Transmitter
E. Integral mount sensor with flying leads
F. Extension
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