Method of detection of oscillation period for oscillatory densim

Details Method of detection of oscillation period for oscillatory densim Method of detection of oscillation period for oscillatory densim

1989-03-21

1990-04-03

Chapman, John

Measuring and testing

Specific gravity or density of liquid or solid

G01N 900

Patent

active

049129627

ABSTRACT:
An oscillation period of an oscillating tube of an oscillatory densimeter is detected while the oscillation of the oscillating tube is maintained by applying an external force in the form of a pulse signal to the oscillating tube in one direction each time the tube passes the original place in that direction so that a stable oscillation free from any influential distortion can be obtained.

REFERENCES:
patent: 4738144 (1988-04-01), Cage
H. Leopold et al., "The Application of the Mechanical Oscillator Technique for the Determination of the Density of Physiological Fluids," Biomedizinische Technik, vol. 22, No. 10 (1977), pp. 231-234.

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