Device for the detection and calculation of particles present in

Details Device for the detection and calculation of particles present in Device for the detection and calculation of particles present in

1984-02-16

1985-10-15

Pianalto, Bernard D.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

356 39, 356 72, 356 73, 356246, 356442, G01N 2100

Patent

active

045470758

ABSTRACT:
A blade or thin beam of concentrated coherent light is formed in order to detect and calculate the number of particles present in a moving suspension that flows through a suspension conduit featuring a relatively small section and which is made of optically transparent material. This beam extends through the entire section at a reduced thickness and in the flow direction. A suitable detector detects and counts the particles that move across the blade, operated by the absorption of light that occurs when each individual particle passes through it.

REFERENCES:
patent: 3800147 (1974-03-01), Shea et al.
patent: 4367043 (1983-01-01), Sweet et al.

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