Particle amount determination method for use in particle stream, involves using evaluation unit that provides pulses for control signals used in regulating flow rate and particle size of particles stream by reducing radiation intensity

摘要

The method involves determining amount of particles (3) contained in particle stream in flow direction using radiation from a radiation source. The radiation irradiated to the particle stream is received by receivers (E1,E2) and converted into electrical signals by opto-electronic converters (6,7). An evaluation unit (8) receives the electrical signals from opto-electronic converters to process the received radiation intensity. The evaluation unit provides pulses for the control signals used in regulating the flow rate and particle size of the particle stream by reducing radiation intensity. An independent claim is included for the particle amount determination device.