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10 Micro Motion
®
Series 3000 MVD Transmitters and Controllers
Installation
2.9 Installing the remote core processor
Note: This section applies only to Model 3500 or Model 3700 devices in remote core processor with
remote transmitter installations.
For dimensions of the remote core processor, see Figure A-4 or Figure B-4.
When mounting the core processor, you can reorient it on the bracket if desired. To do this:
1. Loosen each of the four cap screws (4 mm).
2. Rotate the bracket so that the core processor is oriented as desired.
3. Tighten the cap screws, torquing to 30 to 38 in-lbs (3 to 4 N-m).
Be sure to ground the core processor according to applicable local standards, using either the internal
or external ground screw.
2.10 Sensor wiring
Note: This section applies only to Model 3500 or Model 3700 transmitters.
2.10.1 Cable types
All installation types require 4-wire cable. Micro Motion offers two types of 4-wire cable: shielded
and armored. Both types contain shield drain wires.
User-supplied 4-wire cable must meet the following requirements:
• Twisted pair construction
• The gauge requirements as described in the installation QRG
• The applicable hazardous area requirements, if the device is installed in a hazardous area (see
the ATEX, UL, or CSA documents shipped with the transmitter or available on the Micro
Motion web site)
6. Pull up on the pressure relief valve while pressing the
back cover into place. Be sure to attach the ground
wire to the back cover using the correct screw.
Attaching the ground wire to the wrong screw may
result in crimping of the ground wire.
7. Tuck the wiring out of the way of the connectors to
keep the wiring from crimping, then reinstall the
display cover.