Abstract: A measuring cable travel sensor comprises a measuring cable, and a cable drum for winding on and off the measuring cable. A spiral spring is arranged non-rotatably with the cable drum coaxially therewith, on the rotary trunnion of a rotary angle sensor for sensing rotation of the cable drum. The cable drum and the spiral spring are disposed in a housing which forms at least one mechanical internal space for same. The housing has at least two flat outside surfaces which are a right angle to each other. The housing parts are in the form of plastic injection moldings, and the sensor can be assembled very easily and quickly. The external configuration of the housing makes it possible to afford very many different possible ways of fixing it in position relative to the surrounding structure. The sensor is assembled by a method affording simplicity and speed.

Abstract: Length measuring devices in which the pitch division on the measuring scale involves differing magnetisation which is sensed by means of a sensor unit are subsequently adjustable in terms of the resolution afforded. For the purposes of improved utility this so-called interpolator circuit is not disposed in a separate fixedly mounted housing which is separate from the movable sensor unit, but directly within the sensor unit.

Abstract: A time/analog converter for adjusting the zero point and amplification of the output characteristic of a sensor includes an integrator whose output is connected to the input of a holding member. A reference voltage and the output voltage of the holding member occur at the input of the integrator. A control means actuates switches connecting the integrator to the holding member and applying the reference voltage and the output voltage to the input of the integrator so that the reference voltage is at the integrator input for a first time interval and the holding member output voltage is at the integrator input for a second time interval. The integrator output voltage is applied to the holding member for a third time interval. A controllable pulse shaper is connected to one of the switches and can close it for a required time interval. A related method is also described.

Abstract: Claimed are a method and an arrangement for the transmission of useful signals of a magnetostrictive position sensor which is arranged within a housing, including a control circuit (1) for generating an electrical control pulse, a pulse generator (2) for exciting current pulses in the ultrasonic exciter circuit (6), an ultrasonic pulse detector (3) which upon the reception of an ultrasonic pulse on a magnetostrictive waveguide supplies a corresponding electrical reply signal, and an evaluation circuit (4) for determining the relative position of a position marking (magnet) which is displaceable along the waveguide. Therein the individual circuits of the electronics of the magnetostrictive sensor are to be supplied by way of a cable which is of thinner cross-section and both control pulses and also reply pulses are to be transmitted as useful signals by way of that cable.

Abstract: A magnetostrictive travel measuring device which in spite of simplicity of manufacture minimises the amount of space required and at the same time provides optimum protection for the device and does not excessively limit the mobility of the component to be monitored with respect to the waveguide, comprising an elongate housing in the form of a hollow, peripherally closed profile with at least one flat external surface, a waveguide unit in the interior of the housing, wherein the waveguide of the waveguide unit extends in the longitudinal direction of the profile, and an electronic evaluation system, characterised in that the external contour of the profile has, associated with each external surface, at least one pair of external grooves.

Abstract: Magnetic length measuring devices must be simple and inexpensive to produce, in particular in respect of the sensor head, and in a simple and inexpensive manner must permit assembly of the measuring scale in well-protected form. In accordance with the invention that is achieved by the specific form of housing and manner of assembly of the sensor head on the one hand and the structural shape and manner of fixing of the profile bar on the other hand.

Abstract: A pull element travel sensor include a winding drum and a pull element which can be wound on to and unwound from the winding drum. The winding drum is biassed in the pull element winding-on direction. The length of the pull element which is pulled off the winding drum can be detected by a detecting unit. The pull element is wound on the winding drum in a spiral configuration in a plurality of layers in mutually superposed relationship in a single radial plane of the winding drum. A lifting apparatus for lifting a load has at least two lifting units and at least one travel sensor, each lifting unit having a winding drum with a pull element and a motor for driving the winding drum in the winding-on direction. At least one of the lifting units has a detecting unit for detecting the drawn-off length of the pull element from the winding drum, with all pull elements of the lifting units engaging the same load.

Abstract: A measuring cable travel sensor comprises a housing accommodating a measuring cable drum and a rotary spring operable to urge the cable drum in the direction of winding thereon a measuring cable. A rotary angle sensor is mounted to the housing on the outside thereof. The rotary angle sensor has a sensor shaft with a projecting end trunnion portion. The cable drum is fixed on the sensor shaft trunnion portion non-rotatably in concentric relationship thereon. The travel sensor is of a compact structure, in particular in its axial direction, and simple and inexpensive to produce.

Abstract: A measuring cable travel sensor includes a housing accommodating a rotatable cable drum for winding a measuring cable on to and off same, and a spring for urging the cable drum in the winding-on direction. A rotary angle sensor is operatively associated with the cable drum. The housing at least partially includes a straight profile portion which is of uniform cross-section in its longitudinal direction. The spring can also be disposed in a spring casing portion substantially including a straight profile portion of uniform cross-section in its longitudinal direction.

Abstract: A support for a waveguide for conducting mechanical waves has a high proportion of gas and a low proportion of solid material. The support may include a plurality of annular flanges spaced along the waveguide for supporting the waveguide at small contact surface areas. The support may include open-cell or closed cell material.

Abstract: A measuring cable travel sensor for detecting the position of a movable body and operable under differential pressure comprises a cable drum for winding on and off a measuring cable, a spring for prestressing the cable drum to wind on the measuring cable and a rotary position sensor for detecting the position of the cable drum. The sensor has a differential pressure chamber which is under the differential pressure and in which a cable eye for connection of the cable to the movable body is arranged, a cable chamber in which the cable drum is arranged and a spring chamber in which the spring is arranged. The differential pressure chamber communicates at least with the cable chamber and the spring chamber.

Abstract: An angle of rotation sensor for measuring the angular position of a rotary shaft during more than one revolution consists of a fine angle of rotation sensor linked to the rotary shaft and of a counter. The revolutions of the shaft are all counted without mechanical gears, without an outer voltage supply and without supply batteries, with a simple and economical design. Pulse wire movement sensors supply voltage pulses depending on the rotation of the shaft. The number of voltage pulses is stored in a non-volatile read/write memory.

Abstract: The invention relates to a measuring cord displacement transducer. A sealed measuring cord displacement transducer is proposed which has a measuring cord, a cord drum, a flat spiral spring which, with the cord drum, is arranged coaxially in a rotationally fixed manner on the same shaft, having a rotary encoder connected to the shaft and a housing surrounding the displacement transducer with a mechanical interior and an electrical interior which are separate and spaced apart axially in the longitudinal direction of the shaft, so that the cord drum and the flat spiral spring can be accommodated in the mechanical interior and the rotary encoder and the associated electronics can be accommodated in the electrical interior. In this case, the housing of the mechanical interior is formed by two shell-like, respectively one-piece bearing shells.

Abstract: A robust angle-position sensor for the absolute measurement of the angle of rotating or angle position, respectively over several revolutions has a resolver and further inductive angle of rotation sensor elements. Switching elements of a time multiplex device are in the form of toroidal core chokes. The electronic processing circuit is arranged at a point remote from the point of measurement.