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• Twisted pair construction.
• Applicable hazardous area requirements, if the core processor is installed in a
hazardous area.
• Wire gauge appropriate for the cable length between the core processor and the
transmitter.
Wire gaugeTable 3-1:
Wire gauge Maximum cable length
VDC 22 AWG (0.35 mm
2
) 300 ft (90 m)
VDC 20 AWG (0.5 mm
2
) 500 ft (150 m)
VDC 18 AWG (0.8 mm
2
) 1000 ft (300 m)
RS-485 22 AWG (0.35 mm
2
) or larger 1000 ft (300 m)
3.4 Wire the transmitter to the remote core
processor
1. If you are installing a Micro Motion-supplied cable gland at the core processor
housing, identify the cable gland to use for the 4-wire cable conduit opening.
Cable gland identificationFigure 3-6:
A
B
A. Cable gland used with 4-wire conduit opening
B. 3/4"–14 NPT cable gland used with 9-wire conduit opening
2. Connect the cable to the core processor as described in the sensor documentation.
3. Connect the four wires from the core processor to terminals 1–4 on the transmitter.
Important
Do not ground the shield, braid, or drain wires at the transmitter.
Mounting and sensor wiring for remote core processor with remote sensor installations
Installation Manual 17