Patent ID: 8362764

Claim:
A measuring device for determining a strength of a magnetic field, the measuring device comprises: a sensor device ( 1 ) with at least a Hall probe ( 2 ), the Hall probe ( 2 ) being designed for generating a Hall voltage ( 14 ), depending on a magnetic field ( 5 ), which penetrates the Hall probe ( 2 ), and a feed current flowing through the Hall probe ( 2 ), an electrical diagnosis conductor ( 4 ) being galvanically isolated from the Hall probe ( 2 ), a driver device ( 8 ) for generating an electric diagnosis current ( 12 ) which flows through the diagnosis conductor ( 4 ), and a magnet ( 7 ) being movably positioned, relative to the sensor device ( 1 ), such that, based on the Hall voltage ( 14 ) of the Hall probe ( 2 ), a determination of the relative position, between the sensor device ( 1 ) and the magnet ( 7 ), is performed.