Abstract: A device for contactless measurement of a displacement path, especially for the detection of position and movement, includes a sensor electronics system for the provision of an alternating current and the evaluation of alterations therein, in addition to an inductive sensor including at least one flat coil. Each coil is configured with a helicoidal conductor disposed on a plane and one of the two flat surfaces thereof forms a measuring surface which variously covers a measuring object, arranged at a distance, according to the movement thereof parallel to the measuring surface.

Abstract: The invention relates to a device (10) for contactless measurement of a displacement path, especially for the detection of position and movement, comprising a sensor electronics system for the provision of an alternating current and the evaluation of alterations therein, in addition to an inductive sensor (13) comprising at least one flat coil (15), whereby each coil (15) is configured with a helicoidal conductor (22) disposed on a plane and one of the two flat surfaces (19) thereof forms a measuring surface (14) which variously covers a measuring object (11), arranged at a distance, according to the movement thereof parallel to the measuring surface (14).

Abstract: The invention relates to a deformation measuring device (11) for measuring the torque of a cylindrical shaft (10), which device consists of a sensor (12) which rotates together with the shaft (10) and at least one transducer (16) for converting a torque-dependent deformation of the shaft (10) into a signal which can be evaluated and displayed, the sensor (12) being mounted in an axially aligned manner on the external surface (13) of the shaft (10) and comprising edge portions (14, 19) which extend in the axial direction and which are mounted on the external surface (13) of the shaft (10) so as to transmit the deformation of the shaft, the sensor (12) comprising at least one portion (15) of reduced cross-section which is situated between said edge portions (14, 19) and which supports a deformation transducer (16).

Abstract: An arrangement for the suppression of signal interference removes the interference components from the useful signals, which interference components are additively superimposed on the useful signals during transmission via two electrical transmission lines 2, 3. The two transmission lines couple an electric signal source 4 to a processing circuit 1. The transmission lines 2, 3 have different sensitivities to interference signals, i.e. only the line 2 includes a shield 5 against interference signals 6. The processing circuit includes correlation networks, subtraction circuits and dividers which operate on the signals from the two lines to derive an interference-free useful signal at the output of the processing circuit.