PM2.5 online mass concentration real-time compensation device and method

The invention relates to a PM2.5 online mass concentration real-time compensation device and a method.The PM2.5 online mass concentration real-time compensation device comprises a herringbone stainless steel three-way pipe, wherein the inlet end of the herringbone stainless steel three-way pipe is connected with a cutting head, and entered particulate matter is divided into two paths to be output; a particulate matter scatterometer, wherein an inlet of the particulate matter scatterometer is connected with one output of the herringbone stainless steel three-way pipe through a drying pipe, and the particulate matter scatterometer is used for obtaining a particulate matter scattering coefficient and transmitting the particulate matter scattering coefficient to an intelligent electronic control terminal; a particulate matter monitor, wherein an inlet of the particulate matter monitor is connected with the other path of output of the herringbone stainless steel three-way pipe through another drying pipe, and the