Sensata Technologies, Inc.

Werner John Peter Kleissen

Paulus Thomas Johannes Gennissen

Albert Ferdinand Zwijze

Frank Hendri Jacobs

Marc Gerard Johan Borgers

Cris Ruiz Zwollo

Dedde Hedzer Wiersma

Roger Appelo

Arie-Jan Kolling

Arie-Jan Kölling

Appelo Appelo

A method of manufacturing a pressure sensor is shown, wherein the pressure sensor comprises a port element with a sealing structure and a membrane. Four strain gages will be attached to the membrane. The gages are used in a Wheatstone bridge to sense the fluid pressure. A first finite element action determines a first contour around the membrane central axis with equal compressive strain and a second contour around the membrane central axis with equal tensile strain wherein when fluid pressure is applied to the membrane strain on the first contour is opposite strain on the second contour. A second finite element action determines the four positions of the strain gages on the first and second contour such that the difference between the highest error signal and the lowest error signal at the output of the Wheatstone bridge is minimal under influence of parasitic forces.

Method of manufacturing a pressure sensor

A sensor arrangement () for measuring a pressure and a temperature in a fluid is disclosed. The sensor arrangement () comprises a temperature sensitive electrical element () and a pressure sensing electrical element (), the temperature sensitive electrical element () and pressure sensing electrical element () are both coupled to one side of a metallic membrane structure (). The metallic membrane structure is arranged to pass on the temperature of the fluid which is at the other side of the membrane structure () to the temperature sensitive electrical element () and to pass on the pressure in the fluid to the pressure sensing electrical element (). In this way a combined pressure and temperature sensor is obtained which is applicable in vehicle air-conditioning systems working with COas refrigerant.

Sensor arrangement for measuring a pressure and a temperature in a fluid

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PT Hengelo, Netherlands

Werner John Peter Kleissen