System for determining small particle size distribution in high particle concentrations

摘要

A system is disclosed for determining the distribution of the size of small particles contained in a sampled portion of a process stream containing particles at high concentrations. The system includes a light delivery arrangement that anamorphically modifies light energy received from a light source and projects the anamorphically modified light energy to an optical element contained in a sample cell. The optical element includes a passage that is arranged to receive therein particles of a predetermined size from the sampled portion of the process stream flowing in the sample cell. The anamorphically modified light energy is transmitted through the optical element and is focused within the passage to irradiate the particle ensemble therein. A light collection arrangement collects the light energy escaping from the optical element and focuses the light energy collected onto a detector array. The detector array develops output signals used to determine a measurement of the distribution of the size of the particles contained in the process stream.