Method for determining in a contactless manner the thickness of a layer by resistance and inductive measurement of a sensor coil

摘要

In the thickness of the layer 20 is made of a material for the conductive parts (17) A method for determining non-contact, is located near the part (17) sensor to be measured consisting of coil body 13 and the coil 14 It is set. The method is based on the combination of the induced eddy current principle and the principle. Determines the thickness of the layer and the evaluation stage (20) AC frequency (f) number of measurement is applied to the coil 14, the inductance and resistance values ​​are to be evaluated. Distance between the coil body 13 and the coil 14 and the component 17 is derived from the resistance of the coil to which the AC frequency (f). ; A ferromagnetic material, a conductive material, alternating current, eddy current, inductance, resistance value, the interval value