Emerson Bristol ControlWave LP Manual de instrucciones descargar pdf (Pagina 137)

Section 3 - Grounding & Isolation Page 3-9 S1400CW

• all conductive tubing that runs between the pipeline and mounting valve manifold

and/or the units multivariable pressure transducer

• all conductive connections or tubing runs between the ControlWave EFM/GFC and

turbine meter, pulse transducer, or any input other device that is mounted on the

pipeline

• any Temperature Transducer, Pressure Transmitter, etc. and their mount/interface to

the pipeline

Figure 3-9 - ControlWave EFM (Installation is similar to EFM/GFC/XFC)

Direct Mount Installation (with Cathodic Protection)

The ground conductor connects between the ControlWave EFM/GFC/XFC’s Ground Lug

and a known good earth ground. Connect the cases of Temperature Transducers, Pressure

Transmitters, etc., to the known good earth ground. If the mounting 2-inch pipe is in

continuity with the pipeline it will have to be electrically isolated from the ControlWave

EFM/GFC/XFC. Use a strong heat-shrink material such as RAYCHEM WCSM 68/22 EU

3140. This black tubing will easily slip over the 2-inch pipe and then after uniform heating

(e.g., with a rose-bud torch) it electrically insulates and increases the strength of the pipe

stand.

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Emerson Bristol ControlWave LP Manual de instrucciones Pagina 137