Metal Pipe With Fixed Flanges; Metal Pipe With Loose Flanges; Plastic Pipes, Non-Metallic Pipes Or Pipes With; Insulating Liner - ABB ProcessMaster FEM630 Operating Instructions Manual

FE M63 0 | E L EC TR OM AG N E T I C FLOWM E T E R | O I/F E M6 3 0-EN RE V. A
6 . . .Electrical connections
. . .Sensor grounding

Metal pipe with fixed flanges

A
1
A
Flange design
B
Wafer type design
1
Ground terminal
Figure 28 Metal pipe, without liner (example)
Use a copper wire [at least 2.5 mm2 (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

A
2
1
Flange design
A
Wafer type design
B
1
Threaded bolts M6
2
Ground terminal
Figure 29 Metal pipe, without liner (example)
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.
Plastic pipes, non-metallic pipes or pipes with insulating
liner
B
A
1
G12021
A
B
1
2
3
Figure 30 Plastic pipes, non-metallic
pipes or pipes with insulating liner
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
B
necessary.
1
2
2
3
1
G12022
1
3
2
Flange design
Wafer type design
Ground terminal
Terminal lug
Grounding plate
Install the sensor with grounding plate in the piping.
Connect the terminal lug of the grounding plate and
ground connection on the sensor using the grounding
strap.
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.
29
B
1
3
2
G12023