Abstract：The development of SO2F2 in helium gas reference material in cylinder is reported.The standard reference gas mixture is prepared by filling SO2F2 pure gas and high purity He into a cylinder.The influences of gas pressure in cylinder and the time of storage to the stability of the gas mixture are studied.The homogeneity of gas mixtures is also checked as while as the uncertainty evaluation from it.The results show that the homogeneity is good for each concentration level.The uncertainty from gravimetric method and stability are also evaluated.The relative extended uncertainty of SO2F2 reference material made by gravimetric method is not bigger than 2%,with good stability within six months.
姚强,王德发,盖良京,苗玉龙,吴海,邱妮. 电气设备中保护气体监测用SO2F2气体标准物质研制[J]. 计量学报, 2013, 34(6): 607-610.
YAO Qiang,WANG De-fa,GAI Liang-jing,MIAO Yu-long,WU Hai,QIU Ni. Development of SO2F2 Gas Reference Material for Monitoring the Protecting Gas in Electrical Equipments. Acta Metrologica Sinica, 2013, 34(6): 607-610.
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2013, Vol. 34 
