Bourdon tube transducer
First Claim
Patent Images
1. An environmental parameter transducer comprising:
- a bourdon tube means for sensing an environmental parameter at a remote port;
an electrical circuit controlled by the bourdon tube means;
means for providing an electrical reactance in the electrical circuit means, including an electrical conductive plate that has the same curvature as the bourdon tube means, of the same material as the bourdon tube means; and
means for retaining the conductor in a parallel configuration with the bourdon tube means separated therefrom by a preselected distance and electrically insulated therefrom.
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Abstract
A bourdon tube transducer has included a bourdon tube with a conductive plate electrically separated from the bourdon tube and in parallel with the bourdon tube. As the pressure varies, so does the electrical reactance between the bourdon tube and the conductive plate and this variation is used to vary the frequency of an electrical oscillator that is connected to the bourdon tube and the conductive plate.
57 Citations
4 Claims
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1. An environmental parameter transducer comprising:
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a bourdon tube means for sensing an environmental parameter at a remote port; an electrical circuit controlled by the bourdon tube means; means for providing an electrical reactance in the electrical circuit means, including an electrical conductive plate that has the same curvature as the bourdon tube means, of the same material as the bourdon tube means; and means for retaining the conductor in a parallel configuration with the bourdon tube means separated therefrom by a preselected distance and electrically insulated therefrom. - View Dependent Claims (2, 3, 4)
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Specification