Instruction manual

ControlWave Gas Flow Computer (GFC Plus) Instruction Manual (CI-ControlWave GFC Plus)
2-12 Installation Revised Feb-2013
Connect a ground conductor between the chassis 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 (when used) is in continuity with the
pipeline you may need to electrically isolate it from the unit. Use a
strong heat-shrink material such as RAYCHEM WCSM 68/22 EU
3140. This black tubing easy slips over the 2-inch pipe and then after
uniform heating (with a rosebud torch) it electrically insulates and
increases the strength of the pipe stand. See F1670SS-0a for information
on PGI direct mount systems and manifolds.
Install isolation fittings or gaskets between the following connections:
 All conductive tubing that runs between the pipeline and mounting
valve manifold and/or the unit’s multivariable transducer (MVT).
 All conductive connections or tubing runs between the ControlWave
GFC Plus gas flow computer and a turbine meter, pulse transducer,
or any other I/O device that is mounted on the pipeline.
 Any temperature transducer, pressure transmitter, etc. and their
mount/interface to the pipeline.
Mounting Bolts (4)
Bottom Washers (4)
Top Washers (4)
Dielectric Bolt Sleeves (4)
Dielectric Gasket
& Flange Seals (2)
Multivariable
Transducer
(MVT)
Valve Block
Manifold
Transducer to Manifold
Dielectric Isolation Kit
Ground Rod or System
AWG 4 Ground Wire
2” Pipe-mounting Package
Mounting Pipe does not
contact the Main Pipeline.
Note:
Figure 2-6. ControlWave GFC Plus Direct Mount Installation with Cathodic Protection