Dust concentration measurement device in air by light absorption method

摘要

This study is about the device for measuring the true concentration in the air by the light absorption method. More specifically, in the field work of the industry, it is necessary to control more batches, or in the production process, the substances on the gasIn order to measure the concentration of neutron particles, a plurality of reflectors are arranged in the air channel containing dust to maximize the observation effect of the interaction between the laser light and the array, thus forming a multi-stage laser light path,From the laser generator (1) to the laser light passing through the reflector, the voltage received by the optical sensor (5) does not use the differential circuit and the integral circuit, but combines the phase change without voltage, just the amplification circuit (4).