摘要
针对目前密度天平仅能在液体模式校准、无法在固体模式校准的情况,研制了一种挂钩式空腔玻璃砝码作为固体密度标准,对密度天平固体测量模式校准,并提出了一种称量式密度天平校准方法。对固体式密度天平的校准实验显示,校准结果的扩展不确定度为0. 0016 g/cm3(k=2)。
In view of the fact that the density balance can only be calibrated in the liquid mode and can not be calibrated in the solid mode, a kind of hook-type cavity glass weight is developed as solid density standard, the density balance solid measurement mode is calibrated, and a solid density balance calibration system is proposed. Calibration experiments on solid density balance show that the expanded uncertainty of the calibration results is 0. 0016 g/cm^3 （k = 2）.
作者
陈超云
张进明
任学弟
CHEN Chao-yun;ZHANG Jin-ming;REN Xue-di(Shanghai Institute of Measurement and Testing Technology,Shanghai 201203,China)
出处
《计量学报》
CSCD
北大核心
2018年第6期832-835,共4页
Acta Metrologica Sinica
关键词
计量学
密度天平
玻璃砝码
固体密度标准
校准
不确定度
metrology
density balance
glass weight
solid density standard
calibration
uncertainty
