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3.6 Wire the remote core processor to the sensor
using jacketed cable
For ATEX installations, the jacketed cable must be installed inside a user-supplied sealed
metallic conduit that provides 360° termination shielding for the enclosed cable.
CAUTION!
Sensor wiring is intrinsically safe. To keep sensor wiring intrinsically safe, keep the sensor
wiring separated from power supply wiring and output wiring.
CAUTION!
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.
CAUTION!
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.
1. Run the cable through the conduit. Do not install 9-wire cable and power cable in
the same conduit.
2. To prevent conduit connectors from seizing in the threads of the conduit openings,
apply a conductive anti-galling compound to the threads, or wrap threads with PTFE
tape two to three layers deep.
Wrap the tape in the opposite direction that the male threads will turn when
inserted into the female conduit opening.
3. Remove the junction box cover and core processor end-cap.
4. At both the sensor and transmitter, do the following:
a. Connect a male conduit connector and waterproof seal to the conduit opening
for 9-wire.
b. Pass the cable through the conduit opening for the 9-wire cable.
c. Insert the stripped end of each wire into the corresponding terminal at the
sensor and transmitter ends, matching by color. No bare wires should remain
exposed.
Sensor and remote core processor terminal designationsTable 3-6:
Wire color Sensor terminal Remote core processor terminal Function
Black No connection Ground screw (see note) Drain wires
Brown 1 1 Drive +
Red 2 2 Drive –
Mounting and sensor wiring for remote core processor with remote sensor installations
24 Micro Motion
®
Model 1500 and Model 2500