PM2.5 measuring device

摘要

A PM2.5 measuring device that addresses the technical issues of low measurement accuracy, where conventional light scattering sensors obtain false PM2.5 measurements because the water droplet in the air is dirtier than 2.5μm in damp air. The PM2.5 measuring apparatus includes a housing 1, a light scattering sensor 2, and an electric heating unit. The light scattering sensor 2 is disposed in the housing 1 and has an air inlet 21. The electric heating unit is disposed between the air inlet of the housing and the air inlet 21 of the light scattering sensor 2.