32 FEP630, FEH630 ELECTROMAGNETIC FLOWMETER | OI/FEP630/FEH630-EN REV. D
… 6 Electrical connections
… Sensor grounding
Internally insulated piping with cathodic corrosion
potential
G11050
3
1066
1
2 45
8 7 6
9
23
1 Piping flange
2 Insulating plate
3 Gasket / insulating ring
4 Grounding plate
5 Insulating pipe
6 Flange
7 Liner
8 Insulation
9 Sensor
Figure 38: View Screw bolts
Install grounding plates on each side of the flowmeter sensor.
Insulate the grounding plates from the pipe flanges and connect
them to the flowmeter sensor and to functional ground.
The screw bolts for flange connections should be mounted with
insulation. The insulation plates and the insulation pipe are not
included in the delivery. They must be provided onsite by the
customer.
G11049
11
2
A
B
3
B
B
B
A Connection line corrosion
potential*
B Insulated screw bolts without
grounding plates
1 Insulated piping
2 Functional ground
3 Grounding plates
* ≥ 4 mm
2
Cu, not included in the delivery, to be provided on-site
Figure 39: sensor with grounding plate and functional ground
The corrosion protection potential must be diverted through a
connecting line
A away from the insulated installed sensor.
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