Proper conduit installationFigure 5-1:
5.2 Online instrumentation cable
The online instrumentation wiring is a polyurethane-jacketed, twisted-pair, shielded
instrumentation cable used to transmit millivolt level instrumentation signals to the online
system. The cable is designed to provide noise shielding and protection within harsh
industrial environments. It is pulled to the junction/switch boxes where it is joined to
bundled, multi-pair cabling routed back to the unit. Typically, the instrumentation-to-
junction box pull is relatively short (<50 ft) and close to the machinery. It is not enclosed in
conduit except when conduit is required for specific applications. Secure exposed cabling
to machinery and plant infrastructure to avoid maintenance hazards and safety hazards.
5.2.1 Install online instrumentation cable
CAUTION!
If you are installing through conduit, the cable pull force should not exceed 25 lbs. Excessive
force will deform twisted-pair cable and degrade performance.
Procedure
1. If you are using the A612-NA-09-0 cable, apply a thin coating of dielectric grease to
the connector and screw into sensor housing using hand force only.
2. Label the cable on both ends using plant-approved wire labels. The wire label
designation must be the same on both ends of the cable.
Cabling requirements
26 MHM-97125-PBF-EN, R0
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