Patent ID: 8397576

Claim:
A sensor for determining a pressure of a fluid comprising: a) a vacuum tight welded housing; b) a first membrane disposed in said housing, said first membrane enclosing a part of a first inner volume, and said first membrane having a first contact area associated with a first temperature sensor and a heater; c) a second membrane disposed in said housing, said second membrane enclosing a part of said first inner volume, and said second membrane having a second contact area associated with a second temperature sensor and being disposed opposite said first contact area, wherein at least one of said first membrane and said second membrane are elastic at least in part of the respective said contact area and/or around the respective said contact area; d) said first inner volume being formed with an access for the fluid; e) said first and second membranes hermetically sealing a second inner volume being held at a reference pressure; f) said first and second contact areas touching each other at respective default positions and said first and second contact areas determine the mechanical and thermal contact due to the elasticity of one of said first and said second membranes when said first inner volume is connected to the fluid, thereby enabling a stronger heat transfer from said first contact area to said second contact area due to the pressure of the fluid.