摘要：介绍一种新的标准尘埃粒子计数器校准方法,通过“尘埃粒子计数器—凝结核粒子计数器—气溶胶静电计”的逐级溯源链,将尘埃粒计数器的计数值溯源至电流基准,形成一个完整的溯源体系。结果表明,该方法可以对尘埃粒子计数器量程内粒径的计数效率进行评估,解决各种流量的尘埃粒子计数器的校准问题。

关键词：尘埃粒子计数器；溯源；计数效率；流量

Abstract：A new calibration method for the standard optical particle counter was introduced. According to the stepwise traceability chain of optical particle counter —condensation nucleus counter —aerosol electrometer,the count value of optical particle counter could be traced to the current standard. A complete traceability system was formed. The results show that this method can not only evaluate the counting efficiencies of optical particles in different radius ranges,but also solve the calibration problem in different flow rates.

Keywords: optical particle counter；traceability；counting efficiency；flow