Vibration type density meter

Details Vibration type density meter Vibration type density meter

1981-12-14

1984-02-07

Kreitman, Stephen A.

Measuring and testing

Specific gravity or density of liquid or solid

G01N 900

Patent

active

044295642

ABSTRACT:
A vibration type density meter includes a mechanical oscillator or resonator having a resonance frequency variable with the density of a specimen fluid around the oscillator. The resonator is of a cylindrical configuration with flanges at the ends thereof, at least one of the ends being open for introducing specimen fluid into the resonator. The meter also includes means for exciting the resonator, means for detecting oscillations of the cylindrical resonator, a cover coupled to the flanges of the resonator in surrounding relation to the latter, and circuit means for processing a frequency signal from the oscillation detecting means, and by arithmetic operations derive and display the density of the specimen fluid being measured.

REFERENCES:
patent: 4217774 (1980-08-01), Agar
patent: 4297872 (1981-11-01), Ikeda et al.
patent: 4362048 (1982-12-01), Agar et al.
A. P. Wenger, "Vibrating Fluid Densimeters: A Solution to the Viscosity Problem", IEEE Transactions on Ind. Elec. and Control Instr., vol. IECI-27, No. 3, pp. 247-253, Aug. 1980.

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