Meter Runs With Cathodic Protection - Emerson ControlWave Series Site Considerations For Equipment Installation, Grounding, And Wiring Manual

Site Considerations for Equipment Installation, Grounding, and Wiring Manual
D301452X012
October 2019
Figure 3-8: Remote Installation without Cathodic Protection
3.4.2

Meter Runs with Cathodic Protection

Dielectric isolators are available and are always recommended as an added measure in isolating the
flow computer from the pipeline even though the flow computer does provide 500V galvanic
isolation from the pipeline and should not be affected by cathodic protection or other EMF on the
pipeline. Some (but not all) flow computers may be mounted directly on the pipeline (see
9) or remotely on a vertical standalone two-inch stand-pipe (see
that isolation fitting always be used in remotely mounted meter systems. Install an isolation fittings
or gasket between the following connections:
The FB2100 flow computer with CPU option 2 includes two on-board channels you can individually
configure as either analog outputs (AO) or analog inputs (AI).
When configured as analog outputs, the channels have the following characteristics:
14
Figure 3-10). It is recommended
Grounding and Isolation
Figure 3-