Patent ID: 8842267

Claim:
A method for determining a size distribution of particles, in use in the area of processing of cereal, cereal grinding products and cereal end products of milling or special milling or in the production of feedstuff for farmed or domestic animals, fish and crustaceans, for particles in a particle-containing product stream produced by size-reduction, purifying, separation, mixing and/or agglomeration and having particle sizes ranging from 2 μm to 20 mm, said method comprising the following steps: a) generating measurement data by optically capturing at least a portion of the particles using at least two different optical measurement methods at a measurement region, wherein at least one optical measurement method comprising the capturing of a laser diffraction pattern of the portion of the particles and at least one optical measurement method comprises the capturing of projection surface areas of the portion of the particles, b) determining particle size distributions of the portion of the particles on the basis of the measurement data which is captured optically in step a); and c) calibrating the determined particle size distributions, whereby the particle size distributions are combined to form one common distribution over the entire measurement region.