3
Layout and functional description
3.1 Structure
1
Transducer
2
Sensor
The flow sensor consists of a transmitter and a sensor.
It is available for different pipe diameters:
“Dimensions for flow sensor with DN 10 to 20” on page 98
The magnetic-inductive flow sensor's measuring principle is based
on Faraday's law of electromagnetic induction.
“Functional principle” on page 26
The flow sensor measures the flow volume of fluids with a conduct-
ibility of 50 μS/cm in closed pipes.
3.2 Functional description
The magnetic-inductive flow sensor's measuring principle is based
on Faraday's law of electromagnetic induction.
The coils of the flow sensor generate a magnetic field orthogonal to
the flow direction. The charge carriers of a conductive liquid are
deflected by Faraday's law of induction when passing through the
magnetic field. As a result, an electrical voltage between the meas-
uring electrodes is induced, which is measured and evaluated. The
higher the liquid velocity, the higher the induced voltage.
The voltage signal is converted by the integrated electronics of the
transmitter based on the nominal size in flow volume.
Functional principle
Layout and functional description
Functional description
05.03.2020
Flow sensor PF55S
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