Calibration of optical particle-size analyzer

Details Calibration of optical particle-size analyzer Calibration of optical particle-size analyzer

1977-03-22

1979-01-23

Clark, Conrad J.

Optics: measuring and testing

For size of particles

356243, G01N 1502

Patent

active

041358210

ABSTRACT:
This invention relates to a system for the calibration of an optical particle-size analyzer of the light-intercepting type for spherical particles, wherein a rotary wheel or disc is provided with radially-extending wires of differing diameters, each wire corresponding to a particular equivalent spherical particle diameter. These wires are passed at an appropriate frequency between the light source and the light detector of the analyzer. The reduction of light as received at the detector is a measure of the size of the wire, and the electronic signal may then be adjusted to provide the desired signal for corresponding spherical particles. This calibrator may be operated at any time without interrupting other processing.

REFERENCES:
patent: 2939960 (1960-06-01), Gunn
patent: 3614231 (1971-10-01), Shaw
patent: 3790760 (1974-02-01), Stiller

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