METER GASKETS AND GROUNDING
Gasket and grounding requirements must be considered when determining the meter location, orientation and application.
Grounding rings are provided with the M7600 meter.
Meter/Pipeline Connection Gaskets
You must install gaskets (provided) between the detector's isolating liner and the pipeline flange to ensure a proper
and secure hydraulic seal. Use gaskets that are compatible with the fluid. Center each gasket on the flange to avoid flow
restrictions or turbulence in the line.
During installation, do not use graphite or any electrically conductive sealing compound to hold the gaskets. This could
compromise the accuracy of the measuring signal.
Figure 13: Meter/pipeline connection gaskets
Meter Grounding
Process pipeline material can be either electrically conductive (metal) or not electrically conductive (made of or lined with
PVC, fiberglass or concrete).
It is essential that the mag meter amplifier’s input ground (zero voltage reference) be electrically connected to the liquid media and
to a good, solid earth ground reference.
Conductive Pipe Grounding
To achieve an adequate ground, the meter body MUST be electrically connected to the liquid media. The mag meter flanges
are provided with grounding bolts for this purpose.
If the pipe material is electrically conductive, simply install grounding straps between these grounding bolts and the
mating flanges.
To ensure a good electrical connection at the mating flanges, we recommend that you drill and tap the flanges and install a
grounding screw (not provided).
These grounding straps must be copper wire, at least 12 AWG size. They must be connected on both sides (inlet and outlet) of
the detector and to a local, earth ground.
Pipelines with Cathodic Protection
As for pipelines with cathodic protection, install meter potential-free. No electric connection from the meter to the pipeline
system may exist and power supply is to be provided via isolating transformer.
GROUNDING RINGS ALSO NEED TO BE INSTALLED ISOLATED FROM THE PIPELINE SYSTEM.
Observe national rules for potential-free installations.
6 mm² Cu
"X"
M4:1
"X"
Electrically isolated
Electrically isolated
Figure 14: Cathodic protection
Meter Gaskets and Grounding
Page 11 February 2018 MAG-UM-00507-EN-02
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