Irrigation
IOM
Sensors
| 31 |
4.5 METAL AND PLASTIC PIPES
4.6 PIPES EQUIPPED WITH CATHODIC PROTECTION
Particular attention must be paid when installing the product in the pipeline with cathodic protection. Isolate
it from the pipeline by installing isolation bushings and washers on the bolts of the flange and connect a wire
between the pipes, large enough to handle the cathodic current and the environmental effect. Use the grounding
rings on both ends (see Fig. 50).
METAL PIPE
PLASTIC PIPE
Grounding rod
Fig. 49 Grounding of the sensor on metal and plastic pipes (with grounding rings)
B
G
R
B
R
G
B
D
B
B
B
B
B
D
Grounding rod
Fig. 50 Grounding of the sensor on protected cathodic pipes
REFERENCES
B
Insulating washers
G
Insulating gaskets
D
Metal grounding ring
R
Sensor insulating coating
