Device for granulometric analysis of particles in fluids

摘要

According to the invention, the device for granulometric analysis of particles contained in fluids comprises a flow-through chamber of an analyzer, a lighting means arranged outside the chamber, opposite a window which is transparent to light and provided in the wall of the chamber, said lighting means being intended to direct a convergent light beam through said window into said chamber, and a light-sensitive means intended to receive light reflected from particles contained in the fluid under investigation and arranged outside said chamber, opposite a second window provided in the wall of the chamber, which second window is transparent to reflected light. The second window is shaped as a cylinder whose axis is matched with the optical axis of the lighting means; the walls of the cylinder serve as walls of the chamber. The optical system of the lighting means is such that the point of intersection of the optical axes of the lighting means and the light-sensitive means is beyond the focus of the lighting means, in the direction of the light flux. The solid angle of the convergent light beam is in this range: O