Liquid density measurement system

Details Liquid density measurement system Liquid density measurement system

1976-02-02

1977-03-15

Goldstein, Herbert

Measuring and testing

Specific gravity or density of liquid or solid

324 61R, G01N 900, G01R 2726

Patent

active

040117464

ABSTRACT:
A liquid density measurement system comprises a capacitance probe and a temperature sensor both immersible in a liquid the density of which is to be measured. Signals derived from the probe and sensor are converted into respective electrical signals representing changes in the dielectric constant and temperature of the liquid respectively. These signals are scaled in a predetermined mutual ratio and then summated to give an output signal proportional to the density of the liquid. The scaling ratio is set according to predetermined liquid parameters such that the accuracy of the density represented by the output signal is unaffected by changes in liquid composition.

REFERENCES:
patent: 3421077 (1969-01-01), Liu et al.
patent: 3761810 (1973-09-01), Fathaver
patent: 3903478 (1975-09-01), Stuart et al.

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