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Pressure transmitter

  • US 7,357,032 B2
  • Filed: 06/20/2006
  • Issued: 04/15/2008
  • Est. Priority Date: 05/06/2003
  • Status: Expired due to Term
First Claim
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1. A pressure transmitter, comprising:

  • a base body having sidewalls that form a recess;

    a membrane that seals the recess to form a chamber in cooperation with the base body;

    a pressure transmitting medium within the chamber, where the pressure transmitting medium is acted upon by an external pressure on an exterior side of the membrane;

    where coefficients of thermal expansion of the membrane and of the base body and the coefficient of thermal expansion of the pressure transmitting medium are established such that a temperature-induced volume change in the chamber is approximately the same as a temperature-induced volume change in the pressure transmitting medium.

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