Open AccessStudy on Interference Factors of Light Scattering PM2.5 Dust Test Instrument
Author(s) -
Yiming Fang,
Qi Li,
Zhemin Chen,
Yanbo Tu
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/358/2/022086
Subject(s) - relative humidity , light scattering , particle (ecology) , relative standard deviation , interference (communication) , scattering , environmental science , optics , particle size , observational error , materials science , metre , physics , meteorology , chemistry , mathematics , statistics , geology , detection limit , astronomy , computer science , computer network , oceanography , channel (broadcasting)
Light scattering PM2.5 dust test instrument is widely used, but it is susceptible to many kinds of interference, and will produce large deviation in some industrial sites. The influence of particle size, relative humidity and other parameters on the measurement results of light scattering dust meter is studied and corrected. The experimental results show that the relative error of detecting single particle size dust is smaller than that of detecting multi-particle size dust. Relative humidity has no effect on non-hygroscopic dust detection, but has obvious influence on hygroscopic dust detection, and the relative error after correction is significantly reduced.