FORFARANDE OCH ANORDNING FOR KANTDETEKTERING AV PROVOBJEKT

摘要

The invention relates to a method for use with a measuring and/or control device, for example a measuring and/control device based on eddy current induction, arranged to be passed over a test piece (4). The invention also relates to an arrangement in such measuring and/or control devices. At least one output signal from the measuring and/or control device (at 1) is detected with respect to those signal changes obtained at the transition from measuring against the test piece to measuring against essentially empty space. When these signal changes occur there is generated an edge signal which indicates that the measuring and/or control device has passed over an edge of the test piece.