FIELD: measurement technology. SUBSTANCE: classifier to isolate monodispersive fractions of aerosol particles includes case, axis-symmetric body installed in it, unit put uniaxially to it and forming ring aerosol flow between two flows of filtering air, accelerating nozzle made in the form of converging tube and unit dividing particles into fractions fabricated in the form of two ring partitions placed uniaxially and forming chambers for discharge of fine, monodispersive and large fractions of particles inside space of case. Axis-symmetric body has conical part positioned on converging tube. Ring partitions are manufactured in the form of truncated cones and are located about axis- symmetric body is sequence with displacement along axis of case. First partition is arranged between chambers for distance of fine and monodispersive and large fractions. First partition and axis-symmetric body or axis- symmetric body and both partitions are provided with mechanism of axial translation relative to case. EFFECT: improved operational efficiency. 11 cl, 7 dwg
