PM2.5自动换膜采样器换膜机构系统设计

Research on Automatic Film-Changing Mechanism Of PM2.5 Sampler

近年来大颗粒物污染日趋严重,准确监测颗粒物PM2.5迫在眉睫。目前国外监测仪器已在国际上普遍使用,国内真正的知识产权产品比较少,产品的精度以及稳定性也有待提高。本文介绍了PM2.5自动换膜采样器及其自动换膜机构,并对研制的实验设备进行比对实验,说明了PM2.5自动换膜采样器自动换膜机构在测量PM2.5质量浓度方面的可靠性。

The air pollution is getting worse in the recent years. It demands a precise surveillance of PM2.5. Foreign monitoring instruments have been widely used in the world at present. Domestic products with self-intellectual property is comparatively rarely used in china. The accuracy and stability of the products also need to be improved.This paper introduces the PM2.5 automatic membrane sampler and its automatic film-changing meehanism. The comparison test is led by the monitoring center of Tianjin environmental protec, tion agency.lt proves the feasibility and reliability of the automatie film- changing mechanism in the sampling of PM2.5 and the efficiency of the device.