Abstract: Disclosed is a pressure sensor, especially for measuring pressures exceeding 100 bar, with a diaphragm (1, 1?) that can be deflected and/or deformed as a result of pressurization. It has an enclosed hollow volume (6) that is disposed below the diaphragm and in particular is at least partly filled with a gas or a mixture of gas. A supporting frame (2) for the diaphragm sealingly closes the periphery of the diaphragm relative to a base member (3), and at least one pressure transducer converts the deflection and/or deformation of the diaphragm into at least one electric quantity. It uses a capacitive, piezoresistive or any other principle or at least one strain measuring strip, in which case the pressure sensor is sealingly encapsulated on all sides and has no electric contacts or lines leading to the outside.

Abstract: Pressure sensor unit, in particular for a vehicle brake system, including a housing (2) in which at least one sensor element (1) is arranged which includes a deformation body (6) and at least one sensor means (7) arranged on the deformation body (6) for sensing a deformation of the deformation body (6), in which case at least the part of the housing (2) which is connected to the sensor element (1) and the part of the sensor element (1) which is connected to the housing (2) are fabricated from the same plastic material or from plastic materials having identical or almost identical temperature expansion coefficients, or in that at least part of the housing (2) and part of the sensor element (1) is designed as a one-piece injection molded part made of plastics.

Abstract: Disclosed is a pressure sensor, especially for measuring pressures exceeding 100 bar, with a diaphragm (1, 1?) that can be deflected and/or deformed as a result of pressurization. It has an enclosed hollow volume (6) that is disposed below the diaphragm and in particular is at least partly filled with a gas or a mixture of gas. A supporting frame (2) for the diaphragm sealingly closes the periphery of the diaphragm relative to a base member (3), and at least one pressure transducer converts the deflection and/or deformation of the diaphragm into at least one electric quantity. It uses a capacitive, piezoresistive or any other principle or at least one strain measuring strip, in which case the pressure sensor is sealingly encapsulated on all sides and has no electric contacts or lines leading to the outside.

Abstract: Pressure sensor unit, in particular for a vehicle brake system, including a housing (2) in which at least one sensor element (1) is arranged which includes a deformation body (6) and at least one sensor means (7) arranged on the deformation body (6) for sensing a deformation of the deformation body (6), in which case at least the part of the housing (2) which is connected to the sensor element (1) and the part of the sensor element (1) which is connected to the housing (2) are fabricated from the same plastic material or from plastic materials having identical or almost identical temperature expansion coefficients, or in that at least part of the housing (2) and part of the sensor element (1) is designed as a one-piece injection molded part made of plastics.