Burkert Type S056 - Manual (Page 7)

SENSOR FOR ELECTROMAGNETIC FLOW METER – MANUAL
7
ESENS_FULLBORE_05.doc
ISOIL
METALLIC RING
INSULATING GASKET
INSULATING
BUSH
METALLIC
RING
INSULATING GASKET
If the sensor must be install
in the piping with a chatode
protection, is necessary:
If the sensor has to be mounted on a
pipe made of an insulating material
is necessary:
Sensors with ground socket
on the connection box
- 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 :
The ripple of DC power source used
for cathodic protection
shall be = 0
Wafer sensors Flanged sensors
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:
o
Grounding with metallic pipe
o
Grounding with insulating pipe
o o
Grounding when there is a cathodic protection over the pipe
GROUNDING INSTRUCTIONS
- IMPORTANT :
The ripple of DC power
source used for
cathodic protection
must be 0.
If the sensor is mounted on a pipe made of an insulating material,
do one of the following:
- Install a metallic ring between the sensor flange and the
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
following:
- use insulating bushes to isolate the bolts,
- insert insulating gaskets on both sides of the rings to
ground the metallic rings and hence the liquid.