Emerson Rosemount 3144P, Reference Manual

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15
Reference Manual
00809-0100-4021, Rev JA
Installation
April 2017
Installation
Figure 2-6. Typical Direct Mounted Configuration
Note
The National Electrical Code (NEC
®
) requires that a barrier or seal be used in addition to the primary
(sensor) seal to prevent process fluid from entering the electrical conduit and continuing to the control
room. Professional safety assistance is recommended for installation in potentially hazardous processes.
2.5.2 Typical European installation
1. Mount the thermowell to the pipe or the process container wall. Install and tighten thermowells and
sensors then apply pressure and perform a leak check before starting the process.
2. Attach a connection head to the thermowell.
3. Insert the sensor into the thermowell and wire it to the connection head, using the wiring diagram
located on the inside of the connection head.
4. Mount the transmitter to a 2-in. (50 mm) pipe or a suitable panel using one of the optional mounting
brackets. The B4 bracket is shown in Figure 2-7 .
5. Attach cable glands to the shielded cable running from the connection head to the transmitter
conduit entry.
6. Run the shielded cable from the opposite conduit entry on the transmitter back to the control room.
7. Insert the shielded cable leads through the cable entries into the connection head and the
transmitter. Connect and tighten the cable glands.
8. Connect the shielded cable leads to the connection head terminals, located inside of the connection
head, and the sensor wiring terminals, located inside of the transmitter housing. Avoid contact with
the leads and the terminals.
A. Thermowell
B. Extension
C. Union or coupling D. Extension fitting length
E. Conduit for field wiring (dc power)
A
B
C
D
E
3.2 in.