Liquid density meter

Details Liquid density meter Liquid density meter

1980-02-29

1981-12-29

Gill, James J.

Measuring and testing

Specific gravity or density of liquid or solid

Hydrostatic pressure type

73439, G01N 926

Patent

active

043076092

ABSTRACT:
An apparatus for measuring the density of a liquid or of a suspension of solids in a liquid is disclosed. The apparatus comprises two pressure sensors adapted to be mounted in the liquid so that the two sensors are vertically at predetermined levels apart, a differential pressure transducer, and proper tubings including a differential pressure zeroing device interconnecting the pressure sensors to the differential pressure transducer, for providing an output proportional to the density of the liquid which is compensated for the differential pressure caused by the differential neight of said pressure sensors in the liquid. In a preferred embodiment of the invention, the differential pressure zeroing device is a pair of U-tubes filled with liquid and the tubings comprise gas filled tubings interconnecting one branch of each U-tube to respective pressure sensors and the other branch of each U-tube to the differential pressure transducer.

REFERENCES:
patent: 3397581 (1968-08-01), Bush
patent: 4116076 (1978-09-01), Nolte
patent: 4136567 (1979-01-01), Rosenblum

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