Measuring and testing – Fluid pressure gauge – Vibration type
Patent
1991-03-29
1993-08-03
Raevis, Robert
Measuring and testing
Fluid pressure gauge
Vibration type
G01L 1100
Patent
active
052318818
ABSTRACT:
A pressure measuring device comprises a pair of pressure compartments, a deflective structural element subjected to a force resulting from a differential pressure between two pressures respectively introduced into the two pressure compartments, and a pair flexible elongated members respectively anchored to and extending from the two opposite sides of the deflective structural element in two opposite directions, wherein one of the two flexible elongated members is anchored fixedly to a stationary support at its extremity, while the other of the two flexible elongated members is anchored to the stationary support in a spring biased arrangement that keeps the tension on the other of the two flexible elongated members constant; wherein a data processor determines the differential pressure between the two pressure compartments as a function of the natural frequencies of flexural vibrations of the two flexible elongated members.
REFERENCES:
patent: 3019641 (1962-02-01), Shapiro
patent: 3079800 (1963-03-01), Hoar
patent: 3478594 (1969-11-01), Love
patent: 3543585 (1970-12-01), Brown
patent: 3721127 (1973-03-01), Garcea
patent: 4476725 (1984-10-01), Chorel et al.
patent: 5003825 (1991-04-01), Lew
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