As an important tool to monitor the degree of particulate matter pollution in ambient air,dust measuring instrument is widely used in disease control,environmental protection and industrial and mining enterprises.In or-der to ensure the accuracy and reliability of its quantity value,it is necessary to carry out regular metrological verifi-cation or calibration.In order to improve the accuracy and efficiency of verification or calibration,this paper discus-ses several main influencing factors,such as instrument placement,instrument coefficient setting,dust rod quality,dust control mode,dust concentration stability time,etc.
关键词
粉尘测量仪/放置方式/仪器系数设置/尘棒质量/发尘控制方式/稳定时长
Key words
dust meter/placement method/instrument factor setting/dust bar quality/dust generation control meth-od/stabilization duration
维普
万方数据