Emerson Rosemount 644 Reference Manual page 80

Electrical Installation
March 2021
Ground the transmitter: option 3
Procedure
1. Ground sensor wiring shield at the sensor if possible.
2. Ensure the sensor wiring and signal wiring shields are electrically isolated from the
3. Do not connect the signal wiring shield to the sensor wiring shield.
4. Ground the signal wiring shield at the power supply end.
80
transmitter housing.
A
A. Sensor wires
B. Transmitter
C. Shield ground point
D. 4-20 mA loop
Reference Manual
00809-0200-4728
B
C
DCS
D
Emerson.com/Rosemount