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Vibratory digital temperature sensor

  • US 4,459,042 A
  • Filed: 08/26/1983
  • Issued: 07/10/1984
  • Est. Priority Date: 11/28/1980
  • Status: Expired due to Fees
First Claim
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1. A temperature sensor comprising a load-sensitive resonator having a pair of spaced-apart mounts which are secured to a base which isolates said resonator from external forces, said base having a coefficient of thermal expansion which is different from that of said resonator such that said base applies a thermally induced stress to said resonator, said resonator having a resonant frequency that is dependent on the elastic properties of said resonator and the compression or tension applied to said resonator through said mounts so that said resonator is compressed and tensioned in accordance with the temperature of said resonator and base, thereby changing the resonant frequency of said resonator solely in accordance with changes in the temperature of said resonator and base.

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