Particle size distribution measurement device for a dust or powder sample, e.g. for characterizing paints, inks or pigments, has a number of capture surfaces for capturing different particle components

摘要

Method for measuring the sedimentation of a powder-like or granular dust sample, whereby the sample is dropped in a settling column (1). According to the method the coarse dust (15) is first collected on the bottom (5) of the shaft, while at a given instant, determined using an optical absorption detector (13, 14), a second sedimentation surface (10) is moved across the shaft to capture the fine remaining dust (16). An Independent claim is made for a device for measuring the particle distribution size in a dust or powder sample with two or more dust collection surfaces.