49
MAG
User Manual v2.0
6. POTENTIAL EQUALIZATION
6.1 GENERAL INDICATIONS
The sensor must be grounded, as shown in the figures below, using the cables with a minimum section of
2.5 mm
2
(recommended: 4 mm
2
). This will assure the potential bonding, noise reduction, and, in the case of
a metal pipe, it will guarantee electrical continuity.
Liquid potential equalization or grounding is obtained with the built-in grounding electrode (the so-called 3rd
electrode). The 3rd electrode electrically connects the liquid to the device in order to provide a stable and
accurate measurement
The sensor must always be grounded! An incorrect grounding may lead to an incorrect measurement.
GROUNDING CABLE: Minimum section 2.5 mm
2
(recommended: 4 mm
2
), grounding screws M5.
Recommended ground resistant value is ≤ 5Ω
The flowmeter is equipped with a grounding electrode (third electrode). In the case of plastic or
coated pipes, we recommended the use of ground rings.
Earthing rings can be used on both ends of the pipes. The earthing rings are indispensable in the case
of plastic or coated metal pipes to ensure good potential compensation. Earthing rings are supplied on
request. Refer to the images on the following pages for more information.
SEPARATE version grounding connection
The sensor must be earthed using the appropriate ground screw placed on the separation box.
Fig. 73 | Separate version grounding connection
BOLTS FOR GROUNDING
CONNECTIONS
Grounding rod
