| 摘要 |
<p>The present invention relates to a device for measuring particle number concentration capable of measuring an aerosol particle having a more than reference size and an aerosol particle having a less than reference size for a fine aerosol particle in which various sizes are mixed by using a coarse particle detecting unit and a fine particle detecting unit at the same time. The present invention is provided to enable the fine particle detecting unit which measures the aerosol particle having less than the reference size to install each heavy firearm in the front side and the back side of a particle separating device and to neutralize a particle which passes through the particle separating device, thereby minimizing the loss of the aerosol particle when the particle is sent to a condensation nucleus particle counter and improving accuracy of a fine particle measuring result. The present invention is provided to install a separate impactor and an impactor detection measuring unit in the front side of the fine particle detecting unit, thereby limiting the aerosol particle sent to the fine particle detecting unit as a particle having the less than reference size and improving the accuracy of a measured result. The present invention is provided to analyze the number of aerosol particles having the more than reference size collected in the impactor and compare the same with the result of the coarse particle detecting unit, thereby verifying the measured result of the coarse particle detecting unit again.</p> |
