Siemens SITRANS FM MAG 3100 Operating Instructions Manual page 40

Installing/Mounting
4.4 Potential equalization
Figure 4-16
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 4-17
• Isolate the sensor from cathodic protected pipes using insulated bolts.
• Use bypass cable between the mating flanges
Note
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
40
Potential equalization with earthing electrodes
WARNING
Cathodic protection
SITRANS FM MAG 3100
Operating Instructions, 12/2021, A5E03005599-AE