Wika Alexander Wiegand Gmbh & Co. Kg

Uwe Vonau

Franz-Josef Lohmeier

Joachim Ballmann

Andreas Trützler

Peter Fürst

Niki Speier

The invention relates to a pressure sensor comprising a sensor element () having a flat membrane () which is transformed at its edge into a hollow-cylindrical ring () so that a central recess () is provided at the lower side () of the membrane (). On the upper side () of the membrane () a resistance arrangement consisting of electric resistors is disposed. A sleeve () projects into the recess () and supports a first elastomeric sealing ring () which is tightly arranged at the circumferential area of the recess (). Furthermore the sleeve () supports a second elastomeric sealing ring () which serves for sealing at a feeding tube for pressure fluid formed in a component part to which the pressure sensor is mountable. The sleeve () is rigidly connected to a disk () which is attached with its outer edge () to a casing () enclosing the sensor element (). Mechanical forces occurring during and after assembly of the pressure sensor to the component part are introduced into the casing () via the sleeve () and the disk () so that the sensor element () is kept free from mechanical distortions which might entail an undesired deformation of the membrane () and consequently a falsification of the measuring signal.

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Schwabach, Germany

Uwe Vonau