Device for measuring the density of liquids

Details Device for measuring the density of liquids Device for measuring the density of liquids

1975-03-20

1976-11-30

Gill, James J.

Measuring and testing

Specific gravity or density of liquid or solid

Float operated indicator

73453, 318676, G01N 922

Patent

active

039941744

ABSTRACT:
A device for measuring the density of liquids. A float provided with a piece of soft iron on one side and with a permanent magnet on the other side is movably disposed in a housing through which a liquid may flow. The soft iron is surrounded by a differential winding, and the permanent magnet is surrounded by two windings with opposing fluxes and having substantially the same numbers of ampere-turns. An output lead from the differential winding is connected to the windings surrounding the permanent magnet over an amplifier. A measuring instrument connected between the amplifier and the windings surrounding the permanent magnet provides an indication of the density of the liquid flowing through said housing.

REFERENCES:
patent: 2695165 (1954-11-01), Hansen
patent: 3040585 (1962-06-01), Chatel et al.
patent: 3126745 (1964-03-01), Lutke
patent: 3377869 (1968-04-01), Glassey

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