Trafag Ag

Dieter Zeisel

Ulrich Staiger

Christoph Schanz

Remo Halbheer

Tobias Ettenauer

Philipp Cörlin

Oliver Suttmann

Marc Broetzmann

Daniel Stark

Armin Siber

Peter Dias-Lalcaca

Jan Dusing

Peter Hauri

Pahlke Achim

Jurgen Koch

Tobias Senkbeil

To improve the output signal quality of a load measurement by means of active magnetization, the invention provides a load measurement method for measuring a mechanical load on a test object (), comprising: a) generating and applying a magnetic field to the test object (); b) detecting a magnetic field changed by the test object () as a result of a mechanical load on the test object () by means of a first magnetic field detection device () to generate a first measurement signal (U, UAB), c) detecting a magnetic field changed by the test object () as a result of a mechanical load on the test object () by means of a second magnetic field detection device () to generate a second measurement signal (U, UAB), d) computationally determining a third measurement signal (UBT) from the first measurement signal (U, UAB) and the second measurement signal (U, UAT), and preferably comprising the steps of e) forming a difference from one (U, UAT) of the first and the second measurement signals and the computationally determined third measurement signal (UBT) to produce an output signal, f) determining the mechanical load applied to the test object () based on the output signal. The invention also provides a corresponding load measurement device for carrying out the load measurement method.

Load measuring method, load measuring device and load measuring arrangement

The aim of the invention is to economically produce a pressure measuring sensor element, and relates, according to one aspect, to a method for producing a pressure sensor measuring element for a pressure sensor which comprises at least one membrane and a covering protecting the membrane, the pressure sensor element being produced in a layer-by-layer generative production method. This makes it possible to, for example, easily construct a combination sensor for detecting pressure and an additional parameter. It is also possible to structures for reinforcement or for influencing resonant frequency or for influencing heat conduction.

Method for producing a pressure sensor measuring element and thus obtained pressure sensor measuring element

To improve the reliability of gas space monitoring of a gas space () of an electrical system () filled with a harmful gas, the invention provides a multi-path valve device () for connecting a density monitor () to a system to be monitored for gas density, comprising a first gas connection () for connecting the valve device () to the system, a second gas connection () for connection to the density monitor (), a third gas connection () for connection of a testing device () for testing the function of the density monitor (), and switching device for selectively connecting the second gas connection () to the first gas connection () or the third gas connection ().

Valve device for switchgears or similar, as well as uses thereof

In order to produce accurate sensor element in a simple way, the invention provides a method for producing a sensor element () for a pressure or force sensor. Steps include, providing a component () to be deformed. Applying to the component (), a sensor function and contact layer () consisting of a material with a k-factor between 2 and 10. Performing planar ablation of the material of the sensor function and contact layer () by means of a laser, in such a manner that strain gauges () with a resistance structure with a meandering shape and contact pads () remain standing.

Method for producing a sensor element by means of laser structuring

A pressure sensor measuring element for a pressure sensor operates to detect pressure in a combustion space of an internal combustion engine. The pressure sensor measuring element includes a separating diaphragm, a plunger for the transmission of deflections of the separating diaphragm to a force measuring element, and with a sleeve which receives the plunger. The sleeve is closed by the separating diaphragm at a first end intended to face the combustion space and is designed to hold the force measuring element at the opposite second end. Accordingly, the pressure sensor measuring element can be produced more cost-effectively. Furthermore, the plunger can be produced in one piece with the separating diaphragm as a diaphragm/plunger unit, and the sleeve and the diaphragm/plunger unit can be formed from the same metal material.

Pressure sensor measuring element and pressure sensor provided with the latter

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Forch, Switzerland

Dieter Zeisel