15
FEM610 |
PROCESSMASTER | OI/FEM610-EN REV. A
5 . . .Installation
G12062
A
E
B
C
D
F
G
G12021
1
1
A
B
Figure 19 Rotating the LCD display (example)
Turn the LCD indicator:
Perform steps
A
to
G
.
Rotating the LCD indicator
Depending on the installation position, the LCD display can
be rotated in 4 increments of 90° to enable horizontal
readings. Refer to chapter "Opening and closing the terminal
box" on page 14.
Use a copper wire (at least 2.5 mm² (14 AWG)) to establish the
ground connection between the sensor, the pipeline flanges
and an appropriate grounding point.
Grounding the flowmeter sensor
General information on ground connections
Observe the following items when grounding the device:
• For plastic pipes or pipes with insulating lining, the earth
is provided by the grounding ring or grounding
electrodes.
• When stray potentials are present, install a grounding
ring upstream and downstream of the flowmeter sensor.
• For measurement-related reasons, the potentials in the
station ground and in the pipeline should be identical.
Note
If the flowmeter sensor is installed in plastic or earthenware
pipelines, or in pipelines with an insulating lining, transient
current may flow through the grounding electrode in special
cases.
In the long term, this may destroy the sensor, since the
grounding electrode will in turn degrade electrochemically. In
these special cases, the connection to the earth must be
performed using grounding rings. Install a grounding ring
upstream and downstream of the device in this case.
Metal pipe with fixed flanges
Flange design
Wafer-type design
Ground terminal
A
B
1
Figure 20 Metal pipe, without liner (example)
