Method and equipment for the characterization of suspensions

Details Method and equipment for the characterization of suspensions Method and equipment for the characterization of suspensions

1997-04-10

2000-02-29

Williams, Hezron

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

73600, 73614, 73602, 738655, G01N 1506

Patent

active

060295074

ABSTRACT:
Method and equipment for the detection and identification of particles in a suspension with the aid of acoustic signals, directed at at least one measurement volume within the suspension, via reception of acoustic reflection signals, conversion of the acoustic reflection signals into electrical reflection signals, counting the number of electrical reflection signals which have an amplitude in excess of a predetermined value and converting the count into numbers of particles which are larger than a certain size, at least one curve being composed on the basis of a cumulative count of the number of reflection signals which have an amplitude in excess of a specific value as a function of the amplitude and the at least one curve being compared with predetermined standard cumulative count curves and material properties, particle concentration, particle size distribution and/or particle characteristics, such as particle shape, particle size and standard deviation thereof, are deduced from the comparison.

REFERENCES:
patent: 3269172 (1966-08-01), McGaughey
patent: 3946600 (1976-03-01), Rettig et al.
patent: 4240287 (1980-12-01), Mast et al.
patent: 4381674 (1983-05-01), Abts
Journal of the Acoustical Society of America, entitled Application of 30MHZ Acoustic Scattering to the Study of Human Red Blood Cells, By M. S. Roos et al., Apr. 1988.
Journal of the Acoustical Society of America, entitled Quantitative Grain Size Evaluation Using Ultrasound Backscattered Echoes, By Saniie et al.

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