APPARATUS FOR MEASURING PARTICLES BY USING DMA AND RECORDING MEDIA IN WHICH THE PROGRAMME FOR MEASURING THE INNER PRESSURE OF DMA

摘要

A particle measuring device using DMA and a recorder for measuring the inside pressure of the DMA are provided to measure the discharge voltage between an inside electrode and an outer cylinder. A particle measuring device using DMA comprises an outer cylinder(31), a path, an inside electrode(32), a particle separator(32-1). The aerosol passing through a charge process and the clean air are flowed in the outer cylinder. The path is formed between the outside cylinder inner walls. The mixture of the clean air and the aerosol passes through the path. The particle separator separates the particle with the electric mobility from the particle among the aerosol.