Plastic or Lined Pipelines
If non-conductive pipelines or pipelines lined with non-conductive material are used, install an additional grounding
electrode or grounding rings between the flanges . Grounding rings are installed like gaskets between the flanges and are
connected with a grounding cable to the meter (See
) .
WHEN GROUNDING RINGS ARE USED, MAKE SURE THE MATERIAL IS RESISTANT TO CORROSION. IF AGGRESSIVE FLUIDS
ARE MEASURED, USE GROUNDING ELECTRODES.
Pipelines with Cathodic Protection
For pipelines with cathodic protection, install the 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 .
USE GROUNDING ELECTRODES (GROUNDING RINGS ALSO NEED TO BE INSTALLED ISOLATED FROM THE
PIPELINE SYSTEM).
Observe national rules regarding potential-free installation
6 mm² Cu
Electrically isolated
Electrically isolated
Figure 17: Grounding for pipeline with cathodic protection
Electrically Disturbed Environment
If the pipe material is in an electrically disturbed environment or if metallic pipelines that are not grounded are used, ground
the meter as shown in
to make sure that measurement is not influenced .
6 mm² Cu
PE
Figure 18: Grounding for electrically disturbed environment
Meter Gaskets and Grounding
Page 17
March 2022
MAG-UM-01272-EN-21
