3
Wiring
Topics covered in this chapter:
•
Options for wiring
•
Connect 4-wire cable
3.1
Options for wiring
The wiring procedure you follow depends on which electronics option you have.
Wiring procedures by electronics option
Table 3-1:
Electronics option
Wiring procedure
Integral transmitter
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.
MVD
™
Direct Connect
™
There is no transmitter to wire. See the MVD Direct Connect manual for wiring
the power and signal cable between the sensor and the direct host.
Integral core processor with remote
transmitter
The core processor is already connected to the sensor. Connect a 4-wire cable
between the core processor and transmitter. Refer to
Section 3.2
.
CAUTION!
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.
CAUTION!
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.
3.2
Connect 4-wire cable
3.2.1
4-wire cable types and usage
Micro Motion offers two types of 4-wire cable: shielded and armored. Both types contain
shield drain wires.
Wiring
Installation Manual
5
