Emerson Rosemount 644 with HART Protocol Reference Manual page 69

Reference Manual
00809-0200-4728, Rev SA
4. Ensure the sensor shield is electrically isolated from the surrounding grounded fixtures.
A. Sensor wires
B. Transmitter
C. Shield ground point
5. Connect shields together, electrically isolated from the transmitter.
Option 3
1. Ground sensor wiring shield at the sensor, if possible.
2. Ensure the sensor wiring and signal wiring shields are electrically isolated from the transmitter
housing.
3. Do not connect the signal wiring shield to the sensor wiring shield.
4. Ground signal wiring shield at the power supply end.
A. Sensor wires
B. Transmitter
C. Shield ground point
Operation and Maintenance
A
A
B
C
B
C
Operation and Maintenance
July 2018
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