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Relative pressure sensor having an atmosphere-side damper

  • US 7,243,550 B2
  • Filed: 10/31/2003
  • Issued: 07/17/2007
  • Est. Priority Date: 11/05/2002
  • Status: Active Grant
First Claim
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1. A relative pressure sensor for measuring a pressure difference between a process pressure and an ambient pressure, comprising a measuring unit, having:

  • a first chamber, which is sealed by a first separating membrane and filled with a transmission medium, said first separating membrane being loadable with the process pressure;

    a second chamber, which is sealed by a second separating membrane and filled with a transmission medium, said second separating membrane being loadable with the ambient pressure;

    a pressure-sensitive element, which separates said first chamber from said second chamber; and

    a damper arranged only between said pressure-sensitive element and said second separating membrane, wherein;

    said damper protects said pressure-sensitive element against the effect of excess-pressure pulses acting on said first separating membrane.

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