Method for identifying particles in a gaseous or liquid carrier

Details Method for identifying particles in a gaseous or liquid carrier Method for identifying particles in a gaseous or liquid carrier

1999-07-21

2000-09-12

Pham, Hoa Q.

Optics: measuring and testing

For size of particles

By particle light scattering

356340, 356343, G01N 1502

Patent

active

061185310

ABSTRACT:
The invention relates to a method for identifying the particles contained in a gaseous or liquid or carrier medium by measuring scattered light aimed at the medium. The method of the invention identifies particles of very small size and also measures the geometric shape of the particles. This is accomplished by simultaneously operating at least three light sources aimed at the volume to be analyzed, and detecting the scattered light with at least three detectors. The measured values of the detected light are correlated and evaluated to identify the particles.

REFERENCES:
patent: 3822095 (1974-07-01), Hirschfeld
patent: 4701051 (1987-10-01), Buchhave et al.
patent: 5052806 (1991-10-01), Snyder
patent: 5373367 (1994-12-01), DeGunther et al.
patent: 5416580 (1995-05-01), Trainer
patent: 5841534 (1998-11-01), Lorenz

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