Abstract: The invention aims at obtaining a simplified and compact construction of a gravimetric metering device (1) for bulk products, comprising a large discharge section per activation zone (A) and transfer zone (F) for supplying the bulk product into a rotor (2) rotated in a horizontal plane, with transfer tools (3) (I,E.; impeller blades ) extending mainly in the radial direction, an emptying station (E) offset relative to the transfer zone (F), and a weighing platform (W) arranged therebetween in the peripheral direction, provided with a force measuring device (20) for determining the weight of the bulk product transported. The invention is characterized in that the transfer tools (3) are mounted so as to be uncoupled from one another in at least one degree of freedom.

Abstract: A trailer coupling including an intermediate unit to be inserted between a standard-type connecting coupling and a trailing vehicle and having integrated therein a force measuring cell for determining vertical forces. Furthermore, horizontal pushing and pulling forces may be determined by integrating at least one force measuring cell acting in horizontal direction. The fifth wheel coupling of semi-trailers may have integrated force measuring cells measuring forces acting in vertical, longitudinal, horizontal and/or lateral horizontal directions.

Abstract: The present invention embodies a calibration/testing device having a housing having a generally cylindrical recess, a piston guided within the recess via a hydrostatic/aerostatic bearing, a pressure chamber formed between the piston and the cylindrical recess, a conduit connected to the pressure chamber for transmitting an exact pressure prevailing in the chamber, and a regulating device for maintaining the piston in a precisely constant position with respect to height independent of varying the load on the piston. The constant position is maintained by the feeding or discharging of fluid to and from the pressure chamber. The pressure within the pressure chamber is defined by loading the piston with calibration weights. The present invention offers the advantage of a comparatively simple structure, while maintaining a high level of accuracy.

Abstract: An optical sensor uses a beam waveguide embedded in a force or pressure transmitting material, in particular an elastomer. To be used as force measuring sensor, the beam waveguide is mounted on an elastic deformable body and embedded in a material that does not undergo creep under the influence of a force.

Abstract: A pressure transducer comprising a rigid body formed of noncreeping material with a ringlike shape and having a central opening, and a radially extending plane end surface, a diaphragm unitary with said rigid body and covering said opening at an end surface opposite to said plane end surface, and thickfilm resistor means applied to at least one of two main surfaces of said diaphragm.

Abstract: A method and apparatus for measuring a pressure, particularly the pressure of a fluid, employ a pressure-charged measuring piston movable in a cylinder and connected to a load or displacement measuring device. The piston is maintained floating or contact-free within the cylinder by hydrostatic or pneumatic fluid in the form of a release agent supplied between the piston and the cylinder under pressure.