Vega Grieshaber Kg

Manfred Liehr

Ewald Boehler

Joern Jacob

Joern Jakob

Ewald B&ouml;hler

J&ouml;rn Jakob

Ewald Böhler

A pressure-measuring cell having a base and a diaphragm positioned on the base is deformed by a pressure being measured. A temperature-measuring sensor is positioned between the diaphragm and the base preferably embedded in a material layer that seals a compartment. The diaphragm is preferably made of a ceramic and the material layer is preferably made of a glass.

Pressure-measuring cell with a temperature sensor

The present invention pertains to a pressure-measurement device with a pressure sensor ( ) for measuring the pressure of liquid or gaseous media and with a diaphragm seal ( ) that subjects measuring diaphragm ( ) of pressure sensor ( ) to a pressure to be measured. Pressure sensor ( ) has a connection part ( ) made of a ceramic material which is connected to measuring diaphragm ( ) on the diaphragm side via a joint ( ) that is diffusion-tight towards the exterior, and is connected diffusion-tightly to diaphragm seal ( ) on the diaphragm seal side. In this way, it is assured that no gases or water vapor can enter the pressure-transfer medium via pressure sensor ( ). The operational mode of the pressure transducer remains functional over a long time, and particularly at high temperatures.

Device for measuring the pressure of liquid or gaseous media

The invention pertains to a pressure sensor for a pressure measuring transducer which contains a base body ( ), and a pressure-sensitive measuring membrane ( ). The membrane is located on the base body ( ) and can be subjected to a measurable pressure. The first chamber ( ) is arranged between the base body ( ) and the measuring membrane ( ) in order to protect the measuring membrane ( ) if the pressure to be measured exceeds an upper pressure limit. A second chamber ( ) is provided to protect the measuring membrane ( ) if the pressure to be measured falls short of a lower pressure limit. The second chamber ( ) is arranged between the measuring membrane ( ) and a contact plate ( ) The contact plate is situated on the side of the measuring membrane ( ) opposite the base body ( ). A bore ( ) is provided for subjecting the measuring membrane ( ) to pressure.

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Wolfach, Germany

Manfred Liehr