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Emerson Rosemount 644 with HART Protocol - Page 69

Emerson Rosemount 644 with HART Protocol
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61
Reference Manual
00809-0200-4728, Rev SA
Operation and Maintenance
July 2018
Operation and Maintenance
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
A
B
C
A
B
C

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