RESISTIVE PRESSURE MEASURING CELL HAVING DIAGNOSTIC CAPABILITIES
First Claim
1. A pressure measuring cell for the detection of the pressure prevailing in an adjoining medium, comprising:
- an elastic membrane on which a first electromechanical transducer with a plurality of first measuring elements is arranged, which supplies a first pressure-dependent output signal; and
a second electromechanical transducer with a plurality of second measuring elements which supplies a second pressure-dependent output signal, wherein in a case of an elastically reversible deformation of the membrane, the two transducers are arranged such that the output signals have a first pressure characteristic, and after an irreversible deformation of the membrane due to an increased pressure load, the same have a significantly different pressure characteristic, and that the plurality of first and second measuring element of at least one transducer are arranged on a first mid-line of the membrane.
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Accused Products
Abstract
A pressure measuring cell for detecting the pressure prevailing in an adjoining medium, comprising an elastic membrane on which a first electromechanical transducer is arranged, which supplies a first pressure-dependent output signal is provided. According to the invention, a second electromechanical transducer, which supplies a second pressure-dependent output signal, is arranged on the membrane wherein the two transducers are arranged such that with an elastically reversible deformation of the membrane the output signals have a first pressure characteristic, and after an irreversible deformation of the membrane due to an increased pressure load same have a significantly different second pressure characteristic.
7 Citations
14 Claims
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1. A pressure measuring cell for the detection of the pressure prevailing in an adjoining medium, comprising:
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an elastic membrane on which a first electromechanical transducer with a plurality of first measuring elements is arranged, which supplies a first pressure-dependent output signal; and a second electromechanical transducer with a plurality of second measuring elements which supplies a second pressure-dependent output signal, wherein in a case of an elastically reversible deformation of the membrane, the two transducers are arranged such that the output signals have a first pressure characteristic, and after an irreversible deformation of the membrane due to an increased pressure load, the same have a significantly different pressure characteristic, and that the plurality of first and second measuring element of at least one transducer are arranged on a first mid-line of the membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification