AT-cut crystal resonator pressure transducer

Details AT-cut crystal resonator pressure transducer AT-cut crystal resonator pressure transducer

1985-07-22

1987-04-28

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Vibration type

310338, G01L 908, H01V 700

Patent

active

046604200

ABSTRACT:
An AT-cut quartz resonator pressure transducer includes a generally disc-shaped resonator section, a housing surrounding the resonator section and joined to the perimeter thereof, with the walls of the housing extending in opposite directions generally normal to the plane of the resonator section. Selected portions of the sidewalls are made thinner than the remaining sidewall portions so that when the housing is immersed in a fluid, a non-uniform stress will be produced in the resonator section. The housing and resonator section are formed so that the frequency of vibration of the resonator section is substantially independent of temperature and relatively independent of temperature transients.

REFERENCES:
patent: 4550610 (1985-11-01), Eer Nisse

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