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Installation Manual
00825-0100-4630
4
Wiring
4.1
Options for wiring
The wiring procedure you follow depends on which electronics option you have.
Table 4-1: Wiring procedures by electronics option
Electronics option
Integral transmitter
MVD
Integral core processor with
remote transmitter
Remote core processor attached
to transmitter
Remote core processor separate
from transmitter – double-hop
WARNING
Make sure the hazardous area specified on the sensor approval tag is suitable for the
environment in which the sensor will be installed. Failure to comply with the
requirements for intrinsic safety in a hazardous area could result in an explosion
resulting in injury or death.
NOTICE
Fully close and tighten all housing covers and conduit openings. Improperly sealed
housings can expose electronics to moisture, which can cause measurement error or
flowmeter failure. Inspect and grease all gaskets and O-rings.
4.2
Connect 4-wire cable
4.2.1
4-wire cable types and usage
Micro Motion offers two types of 4-wire cable: shielded and armored. Both types contain
shield drain wires.
The cable supplied by Micro Motion consists of one pair of red and black 18 AWG
(0.823 mm²) wires for the VDC connection, and one pair of white and green 22 AWG
(0.326 mm²) wires for the RS-485 connection.
Installation Manual
Direct Connect
™
™
Wiring procedure
The transmitter is already connected to the sensor. No wiring
is required between sensor and transmitter. See the transmitter
installation manual for wiring the power and signal cable to the
transmitter.
There is no transmitter to wire. See the
Connect Meters Installation Manual
signal cable between the sensor and the direct host.
The core processor is already connected to the sensor. Connect a
4-wire cable between the core processor and transmitter.
Connect a 9-wire cable between the sensor and the transmitter/
core processor. Refer to
Connect the 9-wire cable
Micro Motion 9-Wire Flowmeter Cable Preparation and Installation
Manual.
•
Connect a 4-wire cable between the core processor and
transmitter. Refer to
Connect 4-wire
•
Connect a 9-wire cable between the sensor and the core
processor. Refer to
Connect the 9-wire cable
the
Micro Motion 9-Wire Flowmeter Cable Preparation and
Installation
Manual.
Wiring
October 2023
Micro Motion MVD Direct
for wiring the power and
, as well as the
cable.
, as well as
13
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