Rosemount 848T Especificações Página 21

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Reference Manual
00809-0100-4697, Rev GA
Section 2: Installation
November 2014
Installation
Grounded thermocouple inputs
1. Ground sensor wiring shield(s) at the sensor.
2. Ensure that the sensor wiring and signal wiring shields are electrically isolated from the
transmitter enclosure.
3. Do not connect the signal wiring shield to the sensor wiring shield(s).
4. Ground signal wiring shield at the power supply end.
A. Sensor wires
B. 848T
C. Power supply
D. Shield ground points
Analog device inputs
1. Ground analog signal wire at the power supply of the analog devices.
2. Ensure the analog signal wire and the fieldbus signal wire shields are electrically isolated
from the transmitter enclosure.
3. Do not connect the analog signal wire shield to the fieldbus signal wire shield.
4. Ground fieldbus signal wire shield at the power supply end.
A. 4-20 mA loop
B. F
OUNDATION fieldbus bus
C. Analog device power supply
D. Analog device
E. 848T
F. Power supply
G. Shield ground points
Transmitter enclosure (optional)
Ground the transmitter in accordance with local electrical requirements.
A
B
C
D
C
D
A
EF
G
G
B
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