Measuring apparatus

Abstract

In a measuring apparatus (1) for contactlessly determining the position of two components (11 and 12 respectively) which are displaceable relative to each other and which are in the form of a measurement value sender (11) and a sensor (21) co-operating therewith, the measurement value sender (11) is in the form of a switching ring comprising a metallic material and connected to the displaceable component, and the sensor (21) comprises a plurality of inductive measuring heads which are arranged over the displacement range of the switching ring and which produce an electromagnetic measuring field composed of individual fields. The measuring heads are also connected to a computing unit (25) in which there is stored in a memory the signal configuration ascertained upon calibration of the measuring apparatus (1); the position of the displaceable component can be determined after a displacement movement of the switching ring (12), by comparison of the signals produced, with the stored signal configuration. This design configuration provides that incorrect measurements are reliably avoided and that a magnetic and a mechanical shock do not have to be tolerated as the measuring apparatus (1) is operational without magnets.

Dependencies are inferred from the claim text.