Apparatus for determining the density of liquids and gases from

Details Apparatus for determining the density of liquids and gases from Apparatus for determining the density of liquids and gases from

1992-05-01

1994-08-16

Cosimano, Edward R.

Boots, shoes, and leggings

73 32R, 73 32A, G01N 900

Patent

active

053392582

ABSTRACT:
A device for determining the density of liquids and gases uses an actuator to physically excite a sample of the material being tested. The oscillations induced by this excitation are detected by a sensor and amplified by an oscillation amplifier, and the amplified signal is used to drive the actuator in a closed-loop fashion. To compensate for errors in the density measurement process arising from non-ideal viscous effects of the sample, a phase change circuit or inverter may be shunted into the amplifier circuit to change the phase of the excitation signal. By observing the effects of the excitation phase change on the oscillation frequency of the sample, the sample's viscosity can be measured, and the system can compensate for its effects.

REFERENCES:
patent: 3339400 (1967-09-01), Banks
patent: 3385104 (1968-05-01), Banks
patent: 3910101 (1975-10-01), Kratky et al.
patent: 4524610 (1985-06-01), Fitzgerald et al.
patent: 4602498 (1986-07-01), Glikberg et al.
patent: 4838084 (1989-06-01), Leopold
patent: 4926682 (1990-05-01), Holm-Kennedy et al.
patent: 5005400 (1991-04-01), Lew
patent: 5237853 (1993-08-01), Cassaday et al.
patent: 5253533 (1993-10-01), Lam et al.
Langdon, R. M., "Vibratory Process Control Transducers", The Marconi Review, vol. XLIII (1980), No. 218, Rugby, Great Britain, pp. 156-175.

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