Emerson Rosemount 8750W - Wiring the Transmitter; Conduit Entries and Connections; Conduit Requirements

March 2016
18
Quick Start Guide
Figure 16. Grounding for Line Sizes 10-in. and Larger
6.0 Wiring the transmitter
This wiring section covers the wiring between the transmitter and sensor, the
4–20mA output, and supplying power to the transmitter. Follow the conduit
information, cable requirements, and disconnect requirements in the sections
below.
For sensor wiring diagrams, see Electrical Drawing 8750W-1504.
See Installation Drawing 8750W-1052.
6.1 Conduit entries and connections
The standard conduit entries for the transmitter and sensor are
1
/2-in. NPT.
Conduit connections should be made in accordance with national, local, and
plant electrical codes. Unused conduit entries should be sealed with the
appropriate certified plugs. The flow sensor is rated IP68. For sensor installations
requiring IP68 protection, the cable glands, conduit, and conduit plugs must be
rated for IP68. The plastic shipping plugs do not provide ingress protection.
6.2 Conduit requirements
 Bundled cables from other equipment in a single conduit are likely to create
interference and noise in the system. See Figure 17.
 Electrode cables should not be run together and should not be in the same
cable tray with power cables.
 Output cables should not be run together with power cables.
 Select conduit size appropriate to feed cables through to the flowmeter.