Flow Through And Insertion Mounting; Electrical Installation - Emerson Rosemount 389 Instruction Manual

2.2.2

Flow Through and Insertion Mounting

Rosemount 389 and 389VP sensors also have a 1 in. MNPT process at the front of the
sensor for mounting into a 1-1/4 in. tee or the process. See Figure for installation
configurations.
Figure 2-4:
Note
Valves and fittings by others. Mount the sensor at least 10 ° from horizontal.
Note
Do not use large pipe wrenches to tighten the sensor into a flange or other type of mounting.
2.3

Electrical Installation

Figure 2-5
sensors to various Rosemount transmitters.
1.
2.
Instruction Manual
Flow Through and Insertion Installations
through Figure 2-19 provide the guidelines for wiring Rosemount 389/389VP
If the cable needs to be extended, use a high quality four conductor shielded
instrument cable available from Rosemount.
Note
If the cable is too long, loop up the excess cable. If the cable has to be shortened, splice and
terminate each conductor neatly and make sure that the overall (outermost) drain wire is not
shorted out with either of the two inner drain wires (shields).
Signal cable should be run in a dedicated conduit (preferably an earth grounded
metallic conduit) and should be kept away from AC power lines. For your
convenience, a spade lug kit is furnished (in a plastic bag wrapped around the cable).
Installation
11