Grounding Instructions - Man FULL BORE Manuel D'installation

GROUNDING INSTRUCTIONS

For correct operation of the meter, it is NECESSARY that the sensor and the
liquid are equipotential, so ALWAYS connect the sensor and converter to
ground:
Grounding with metallic pipe
o
Sensors with ground socket
on the connection box
Grounding with insulating pipe
o
INSULATING GASKET
METALLIC
RING
Grounding when there is a cathodic protection over the pipe
o
o
INSULATING GASKET
ISOIL
INSULATING
BUSH
METALLIC RING
Wafer sensors
If the sensor is mounted on a pipe made of an insulating material,
If the sensor has to be mounted on a
do one of the following:
pipe made of an insulating material
- Install a metallic ring between the sensor flange and the
is necessary:
pipe counter flange,
- or use a sensor with the additional grounding electrode.
If the sensor is mounted on a pipe with a cathode protection, do the
If the sensor must be install
following:
in the piping with a chatode
- use insulating bushes to isolate the bolts,
protection, is necessary:
- insert insulating gaskets on both sides of the rings to
ground the metallic rings and hence the liquid.
7
SENSOR FOR ELECTROMAGNETIC FLOW METER – MANUAL
Flanged sensors
- Install two metallic ring between
the sensor flanges and the counter
flanges of the pipe line or:
- Use a sensor with the additional
grounding electrode
- using insulating bushes to isolate
the bolts
- Grounding metallic rings should be
provided to ground the liquid using
insulating gasket between the rings
- IMPORTANT :
- IMPORTANT :
The ripple of DC power source used
The ripple of DC power
for cathodic protection
source used for
shall be = 0
cathodic protection
must be 0.
ESENS_FULLBORE_05.doc