Potential Equalization - Siemens SITRANS F Series Operating Instructions Manual

Installing/Mounting

4.5 Potential equalization

Torque calculations
All values are theoretical and are calculated making the following assumptions:
1. All bolts are new and material selection is according to EN 1515-1 table 2.
2. Gasket material not exceeding 75 shore A durometer is used between the flowmeter and
mating flanges.
3. All bolts are galvanized and adequately lubricated.
4. The values are calculated for use with carbon steel flanges.
5. Flowmeter and mating flanges are correctly aligned.
4.5 Potential equalization
To obtain optimum results from the measuring system, the sensor must have the same
electrical potential as the liquid being measured.
This is achieved by means of built-in grounding electrodes.
Figure 4-8
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
30
Potential equalization with earthing electrodes
WARNING
SITRANS FM MAG 5100 W
Operating Instructions, 01/2020, A5E03063678-AC