Patent ID: 6534971
Filing Date: 2003-03-18
Classification: G01B,G01D

Abstract:
A measuring instrument (10) for contactless ascertainment of a rotation angle, with a rotor (11, 12) which supports a magnet (15), and a magnetic field sensitive element (20) for producing a measurement signal, characterized in that the rotor (11, 12) is comprised of magnetically nonconductive material, that the magnet (15) is embodied as planar and is disposed parallel to a plane (16) passing through the axle (11) of the rotor (12), that the polarity of the magnet (15) is diametrical to the axle (11), that the measuring instrument (10) does not have any magnetic flux conducting parts, and that the magnetic field sensitive element (20) and the magnet (15) are disposed so that during the rotary motion, the element (20) is disposed in the magnetic field of the magnet (15).