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Emerson Rosemount 8750WB Quick Start Manual page 18

Magnetic flowmeter system

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Quick Start Guide
Run the appropriate size cable through the conduit connections in your magnetic
flowmeter system. Run the power cable from the power source to the
transmitter. Run the coil drive and electrode cables between the flowmeter
sensor and transmitter.
Installed signal wiring should not be run together and should not be in the
same cable tray as AC or DC power wiring.
Device must be properly grounded according to national and local electric
codes.
Rosemount combination cable part number 08732-0753-1003 (ft) or
08732-0753-2004 (m) is required to be used to meet EMC requirements.
Transmitter to sensor wiring
The transmitter can be integral to the sensor or remotely mounted following the
wiring instructions.
Remote mount cable requirements and preparation
For installations using the individual coil drive and electrode cable, lengths should
be limited to less than 1,000 feet (300 meters). Equal length cable is required for
Table 5 on page 19
each. See
For installations using the combination coil drive and electrode cable, lengths
should be limited to less than 330 feet (100 meters). See
Prepare the ends of the coil drive and electrode cables as shown in
Limit the unshielded wire length to 1-inch on both the coil drive and electrode
cables. Any unsheathed wire should be wrapped with proper insulation. Excessive
lead length or failure to connect cable shields can create electrical noise resulting
in unstable meter readings.
Figure 15. Cable preparation detail
Cable Shield
18
.
NOTE
Dimensions are in inches (mm).
1.00
(26)
February 2014
Table 5 on page 19
Figure 15
.
.

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