System and sensor for measuring a distance to a magnetic alternating field source

A measuring system for determining the distance to a magnetic alternating field source, with a magnetic sensor arrangement, by means of which a characteristic magnetic alternating field signal of the magnetic alternating field source can be recorded, and an evaluation device connected with the magnetic sensor arrangement and by means of which the characteristic magnetic alternating field signals of the magnetic alternating field source recorded by the magnetic sensor arrangement can be evaluated and converted into the distance between the magnetic alternating field source on the one hand and the magnetic sensor arrangement on the other, wherein the magnetic sensor arrangement comprises at least two magnetic field sensors, which are arranged at a fixed distance in relation to each other on an axis of movement, on which and along which the magnetic alternating field source is movable with respect to the magnetic sensor arrangement, and in that the characteristic magnetic alternating field signals recorded in the at least two magnetic field sensors 9, 10 are receivable in the evaluation device and can be set into a relationship to each other and in that the relationship between the at least two characteristic magnetic alternating field signals can be converted into the distance between the magnetic alternating field source on the one hand and the magnetic sensor arrangement on the other.