High sensitive micromanometer

Details High sensitive micromanometer High sensitive micromanometer

1981-10-15

1983-09-20

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

U-tube liquid column

G01L 718

Patent

active

044048556

ABSTRACT:
An instrument wherein the downwards or upwards displacement of menisci under the action of a pressure differential in a U-tube arrangement is magnified by a factor of 10.sup.4 or more. This measurement precision is accomplished by determining the volume of manometer fluid displaced via the observation of motion of an air bubble inside a horizontal capillary tube connecting the large and equal diameter vertical legs of a manometer.

REFERENCES:
patent: 2509327 (1950-05-01), Young
patent: 2684593 (1954-07-01), Rothstein

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