DEVICE TO DETERMINE SPECTRUM OF SIZE OF SUSPENDED NANOPARTICLES Russian patent published in 2015 - IPC G01N15/02 B82Y35/00 

FIELD: measurement equipment.

SUBSTANCE: device is used to determine spectrum of size of suspended particles in gases, comprising the following components installed along the analysed gas flow: an inlet nozzle with supply channels; diffusion batteries of meshed type for passage of aerosol particles of certain size; an aggregating device of condenser growth; a counting volume; a vacuum pump; temperature sensors, a heater, a cooler and a microcontroller for control of heating and cooling processes in the aggregating device of condenser growth; an optical system comprising a pulse source of radiation, a lighter and lenses for focusing of optical radiation in the field of counting volume of particle flow and generation of images on a CCD array; an analogue-digital converter and a PC for control of the microcontroller of thermostatting, the vacuum pump and processing of six images of aggregated particles for analysis of the spectrum of their size. The device makes it possible to process simultaneously six images of aggregated particles on a PC, which characterise various size ranges of nanoparticles.

EFFECT: invention makes it possible to reduce time of measurements and to increase their accuracy.

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