Micro-epsilon Messtechnik Gmbh & Co. Kg

Mark Netschaevsky

Felix Mednikov

Roland Mandl

A method for operating an eddy current sensor ( ) with a measuring coil ( ) and an evaluation circuit ( ) for determining material or geometric parameters of a test object ( ), in which the test object ( ) is arranged at a distance (d) from the measuring coil ( ). The impedance of the measuring coil ( ) is evaluated, while the measuring coil ( ) is being supplied with an alternating voltage of a predetermined frequency, and the evaluation circuit ( ) determines the material and geometric parameters of the test object ( ) based on the impedance of the measuring coil ( ). The impedance of the measuring coil ( ) is determined at an alternating voltage of a first frequency, and the impedance of the measuring coil ( ) is determined at an alternating voltage of a second frequency, and the evaluation circuit ( ) computes the material and geometric parameters of the test object ( ) on the basis of the impedances of the measuring coil ( ) at the first and the second frequencies. An eddy current sensor ( ) is also disclosed, which can be used with advantage in conjunction with the method.

Growing community of inventors

Samara, Russia

Mark Netschaevsky