Measuring and testing – Specific gravity or density of liquid or solid – Hydrostatic pressure type
Patent
1995-06-06
1996-12-24
Oda, Christine K.
Measuring and testing
Specific gravity or density of liquid or solid
Hydrostatic pressure type
G01N 928
Patent
active
055875270
ABSTRACT:
A method and handheld apparatus for the measurement of liquid density comprising a handheld enclosure which encases a differential pressure transducer having each pressure orifice connected by separate tees to separate hollow bubble tubes. Each bubble tube is connected on one end to a common micro-pump providing a balanced and relatively constant gas flow in each hollow bubble tube. The other ends of the bubble robes are terminated outside of the enclosure at relatively fixed and different distances from the enclosure in an arrangement that provides for the bubble tubes to be encased in a free hanging probe that will hang substantially vertical and will access liquid chamber diameters down to 1/4 inch. The apparatus measures density by vertically orienting the open ends of each hollow bubble tube in a liquid and measuring the differential pressure at the open ends of the bubble tubes created by the weight of the liquid at their respective depths. The apparatus also compromises an electronic circuit which takes the output signal from the differential pressure transducer, manipulates it and displays a properly calibrated and steady reading.
REFERENCES:
patent: 1457406 (1923-06-01), Stancliffe
patent: 1460134 (1923-06-01), Johlin
patent: 2394549 (1946-02-01), Howe
patent: 2577548 (1951-12-01), Vetter
patent: 2668438 (1954-02-01), Marquardt
patent: 2755669 (1956-07-01), Beard
patent: 2878675 (1959-03-01), Crabbe
patent: 2898763 (1959-08-01), Jawett
patent: 3451273 (1969-06-01), Ludlow
patent: 3453891 (1969-07-01), Kapff
patent: 3460394 (1969-08-01), Cryer
patent: 3754445 (1973-08-01), Pavlo
patent: 4132110 (1979-01-01), Muramoto
patent: 4307609 (1981-12-01), Rosenblum
patent: 4393705 (1983-07-01), Eidschun
patent: 4630478 (1986-12-01), Johnson
patent: 4815093 (1989-03-01), Wollermann-Windgasse
patent: 4949572 (1990-08-01), Wilen et al.
patent: 5115679 (1992-05-01), Uhlarik
Radford Neal T.
Waddle Roy J.
Isaf, P.C. Louis T.
Oda Christine K.
LandOfFree
Handheld density meter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Handheld density meter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Handheld density meter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1179881