Emerson MICROMOTION CNG050 Installation Manual page 10

Wiring
The 4-wire cable supplied by Micro Motion consists of one pair of red and black 18 AWG
(0.75 mm
(0.35 mm
User-supplied 4-wire cable must meet the following requirements:
•
•
•
3.2.2 Prepare the 4-wire cable
Important
For user-supplied cable glands, the gland must be capable of terminating the drain wires.
Note
If you are installing unshielded cable in continuous metallic conduit with 360º termination shielding,
you only need to prepare the cable – you do not need to perform the shielding procedure.
6
2
) wires for the VDC connection, and one pair of white and green 22 AWG
2
) wires for the RS-485 connection.
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.
Table 3-2: Wire gauge
Wire gauge
2
VDC 22 AWG (0.35 mm )
2
VDC 20 AWG (0.5 mm )
2
VDC 18 AWG (0.8 mm )
RS-485 22 AWG (0.35 mm
Maximum cable length
300 ft (90 m)
500 ft (150 m)
1000 ft (300 m)
2
) or larger 1000 ft (300 m)
Micro Motion CNG050