Measuring and testing – Volume or rate of flow – By measuring thrust or drag forces
Patent
1986-07-07
1987-06-23
Birmiel, Howard A.
Measuring and testing
Volume or rate of flow
By measuring thrust or drag forces
73 61R, 7386121, G01N 1502, G01N 1507, G01F 128
Patent
active
046743375
ABSTRACT:
A device for estimating the number and the mass of particles borne in a fluid stream comprises a novel target on which the particles impact at a constant angle thereby generating acoustic signals proportional to the kinetic energy of the particles. The acoustic signals are converted by means of a transducer to corresponding electric signals which are processed by art computer means. Compensating probes are disclosed for subtracting extraneous noise.
REFERENCES:
patent: 3841144 (1974-10-01), Baldwin
patent: 3906780 (1975-09-01), Baldwin
patent: 4135395 (1979-01-01), Sullivan et al.
patent: 4149415 (1979-04-01), Harbour
Birmiel Howard A.
Rexford Dean R.
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