Chapter 3 Wiring; Wire The Core Processor To The Sensor - Emerson Micro Motion Quick Start Manual

Wiring
3 Wiring
Topics covered in this chapter:
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3.1

Wire the core processor to the sensor

3.1.1 Wire the core processor to the sensor using jacketed
cable
Prerequisites
For hazardous area installations, install the jacketed cable inside a user-supplied sealed
metallic conduit that provides 360° termination shielding for the enclosed cable.
CAUTION!
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Procedure
1.
2.
8
Wire the core processor to the sensor
Wire the dual core processor (option 1)
Wire the enhanced core processor (option 2)
Sensor wiring is intrinsically safe. To keep sensor wiring intrinsically safe, keep the
sensor wiring separated from power supply wiring and output wiring.
Keep cable away from devices such as transformers, motors, and power lines, which
produce large magnetic fields. Improper installation of cable, cable gland, or conduit
could cause inaccurate measurements or flow meter failure.
Improperly-sealed housings can expose electronics to moisture, which can cause
measurement error or flowmeter failure. Install drip legs in conduit and cable, if
necessary. Inspect and grease all gaskets and O-rings. Fully close and tighten all housing
covers and conduit openings.
Run the cable through the conduit.
At the core processor, insert the stripped end of each wire into the corresponding
terminal at the core processor ends, matching by color. No bare wires should remain
exposed. See the following table.
Table 3-1: Core processor terminal designations
Wire color
Black
Brown
Red
Function
Drain wires
Drive +
Drive –
Micro Motion Liquified Natural Gas Meter