APPLICATION OF PARTICLE LASER COUNTER FOR AIR PURITY MEASURING

The capabilities of Novatek-Electro LTD laser counter under the conditions of expeditious monitoring (7 secs. for measuring of air contamination with aerosol fraction PM 2.5) have been studied in the paper. Possibility of determination of aerosol mass concentration using this counter is also shown and calibrating for different dusts with the coefficients of refraction from 1.17 by comparing to the testimonies of AFA VP filter for the same dusts is carried out. It is found that 1.65 calibration coefficient enables to define the mass concentration of dust in the air by a laser counter with the error of less than 20%.