Patent ID: 6061130
Filing Date: 2000-05-09
Classification: G01N

Abstract:
Apparatus for determining the particle size distribution and for characterizing the particle shapes of a particle mixture; said apparatus comprising:a metering device (10) for classifying a particle mixture supplied in a particle stream (15) to said apparatus;an optoelectronic measurement section comprising a light source (17) and an image collecting device (18, 19) aligned with one another, wherein the particle stream (15) is guided between said light source (17) and said image collecting device (18, 19);said image collecting device (18, 19) comprising a plurality of electrooptical image recording units (18, 19) directed onto the particle stream (15) and having different image recording scales matched to one another to cover the whole measurement range of said apparatus;a computing unit converting digital image points recorded by said recording units (18, 19) into a size determination of the particles.