... for short) is used to measure sizeand number of dust particle per volume in clean air, and may directly ... , aviation and other departments. parameter:Parameter\ModelY09-6 laser dust particle counter (LED)Overall dimension205*280*125mm3Display wayLEDQuality4.5kgMax. ... atmospheric pressure86kPa-106kPaMax. allowed sampling consistence35000 per square meters (Dust particle size can not be more than 0.5& ...