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 sign al wire at the po wer supply of th e analog device s.
2. Ensure that the analog si gnal wire and the fieldbus signa l 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 tran sm itte r in accordance with local electrical requirem ents.
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