Emerson Rosemount 644 Reference Manual page 79

Reference Manual
00809-0200-4728
Ground the transmitter: option 2
Procedure
1. Connect signal wiring shield to the sensor wiring shield.
2. Ensure the two shields are tied together and electrically isolated from the
3. Ground shield at the power supply end only.
4. Ensure the sensor shield is electrically isolated from the surrounding grounded
Emerson.com/Rosemount
transmitter housing.
fixtures.
A
A. Sensor wires
B. Transmitter
C. Shield ground point
D. 4-20 mA loop
Note
Connect shields together, electrically isolated from the transmitter.
Electrical Installation
March 2021
B
C
DCS
D
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