Siemens SITRANS F M MAG 3100 Operating Instructions Manual page 32

Installing/Mounting
4.6 Potential equalization
Figure 4-12
Cathodic protected piping
Special attention must be paid to systems with cathodic protection
Use in hazardous area!
Cathodic pipe protection is not allowed in hazardous areas
Figure 4-13
● Isolate the sensor from cathodic protected pipes using insulated bolts.
● Use bypass strap between the mating flanges
30
Potential equalization with earthing electrodes
WARNING
Cathodic protection
NOTICE
Remote mounted sensor versions
If the above is not acceptable, remote mounted sensors can alternatively be connected
as follows:
 Connect coil current cable shield at sensor end via a 1.5 µF condensator
 Make sure that electrode cable shield is not connected at both ends
SITRANS F M MAG 3100
Operating Instructions, 06/2010, A5E03005599-01