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Reference Manual
00809-0100-4697, Rev EA
October 2011
2-9
Rosemount 848T
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.
Analog Device Inputs
1. Ground analog signal wire at the power supply of the analog devices.
2. Ensure that 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.
Transmitter Enclosure (optional)
Ground the transmitter in accordance with local electrical requirements.
Sensor Wires
Power
Supply
Shield ground points
848T
Power
Supply
Shield ground points
848T
Analog
Device
Analog Device
Power Supply
4-20 mA loop
FOUNDATION
fieldbus bus