Institut Dr. Friedrich Forster, Prufgeratebau

Institut Dr. Foerster Gmbh & Co. Kg

Günther Stritzke

Stefan Koch

Alfons Kalisch

A test method for testing elongated objects comprising moving an elongated object in a feed-through direction through a feed-through coil arrangement having at least one feed-through coil, wherein the feed-through coil arrangement is secured to be transversely movable with respect to the feed-through direction of the object and is guided on the object passing through such that the feed-through coil arrangement can follow transverse movements of the object occurring transversely with respect to the feed-through direction of the object.

Test method and test apparatus for testing elongated objects using coil

A magneto-inductive materials tester has probes which, when brought into contact with the material, produce an electrical signal corresponding to properties of the material desired to be tested. Apparatus for evaluating this test signal has at least one device for producing a compensation voltage to eliminate residual or drift error voltages that may be superimposed on the test signal. The compensating device includes a counting pulse generator, at least one pulse counter connected to the generator at least temporarily, and a digital/analog converter connected to the pulse counter output to provide the desired compensation voltage.

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Gomaringen, Germany

Günther Stritzke