• Product Guide

Principle of the Transducer

In the transducer body there are four holes. Two coils at right angles to each other are wound through these holes. One coil (the primary) is supplied with an alternating current; the other (the secondary) acts as a measurement coil. Since the two are at right angles to each other, there is no magnetic coupling between the coils as long as there is no load on the transducer body.

Pressductor principle
The transductor is magnetised via the primary coil (a). A voltage proportional to the loading force is induced in the secondary coil (b).

If the transducer body is loaded as shown in diagram, the field pattern changes. The permeability of the steel is reduced in the direction of the force and increases in the right angle direction to the force. The result is a change in the symmetry of the magnetic flux, so that some of the flux induces a voltage in the secondary winding. The induced voltage is proportional to the load.

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    ABB contact for India

    Sales: Sanjay Puri
    Service: Partha Nag
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