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Reference Manual
00809-0100-4021, Rev FB
August 2011
Rosemount 3144P
2-16
Option 2: Recommended for grounded transmitter housing
1. Ground the transmitter housing then connect the sensor wiring shield to
the transmitter housing (see “Transmitter Housing” on page 2-16).
2. Ensure the shield at the sensor end is electrically isolated from
surrounding fixtures that may be grounded.
3. Ground the signal wiring shield at the power supply end.
Option 3
1. Ground the sensor wiring shield at the sensor, if possible.
2. Ensure the sensor wiring and signal wiring shields are electrically
isolated from the transmitter housing and other fixtures that may
be grounded.
3. Ground the signal wiring shield at the power supply end.
Grounded Thermocouple Inputs
1. Ground the sensor wiring shield at the sensor.
2. Ensure the sensor wiring and signal wiring shields are electrically
isolated from the transmitter housing and other fixtures that may
be grounded.
3. Ground the signal wiring shield at the power supply end.
Transmitter Housing
Ground the transmitter housing according to local or site electrical
requirements. An internal ground terminal is standard. An optional external
ground lug assembly (Option Code G1) can also be ordered, if needed.
Ordering certain hazardous approvals automatically includes an external
ground lug (see Table A-3 on page A-14).
4-20 mA loop
Transmitter
Sensor Wires
Shield ground point
4-20 mA loop
Transmitter
Sensor Wires
Shield ground point
4-20 mA loop
Transmitter
Sensor Wires
Shield ground point
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