ABB ProcessMaster FEM631 - Metal Pipe with Fixed Flanges; Metal Pipe with Loose Flanges; Plastic Pipes, Non-Metallic Pipes or Pipes with; Insulating Liner

29
FEM630 | ELECTROMAGNETIC FLOWMETER | OI/FEM630-EN REV. A
6 ...Electrical connections
...Sensor grounding
Metal pipe with fixed flanges
G12021
1
1
AB
G12022
1
1
2
2
AB
G12023
2
1
1
3
AB
3
2
Flange design
Wafer type design
Ground terminal
Flange design
Wafer type design
Ground terminal
Terminal lug
Grounding plate
Flange design
Wafer type design
Threaded bolts M6
Ground terminal
A
B
1
A
B
1
2
3
A
B
1
2
Figure 28 Metal pipe, without liner (example)
Figure 29 Metal pipe, without liner (example)
Figure 30 Plastic pipes, non-metallic
pipes or pipes with insulating liner
Use a copper wire [at least 2.5 mm (14 AWG)] to establish the
connection between the ground terminal of the sensor, the
pipeline flanges and a suited grounding point in accordance
with the figure.
Metal pipe with loose flanges
Plastic pipes, non-metallic pipes or pipes with insulating
liner
1 Solder the threaded bolts M6 to the piping and connect
the ground in accordance with the figure.
2 Use a copper wire [at least 2.5 mm2 (14 AWG)] to
establish the connection between the ground terminal of
the sensor and a suited grounding point in accordance
with the figure.
For plastic pipes or pipes with insulating lining, the grounding
of the measuring medium is provided by the grounding plate
as shown in the figure below or via grounding electrodes that
must be installed in the device (option).
If grounding electrodes are used, the grounding plate is not
necessary.
1 Install the sensor with grounding plate in the piping.
2 Connect the terminal lug of the grounding plate and
ground connection on the sensor using the grounding
strap.
3 Use a copper wire with at least 2.5 mm2 (14 AWG)) to
establish a connection between the ground connection
and a suited grounding point.