固体式密度天平校准系统的设计与实现  

Design and Implementation of Solid Density Balance Calibration System

作　　者：陈超云[1] 张进明[1] 任学弟[1] CHEN Chao-yun;ZHANG Jin-ming;REN Xue-di(Shanghai Institute of Measurement and Testing Technology,Shanghai 201203,China)

机构地区：[1]上海市计量测试技术研究院,上海201203

出　　处：《计量学报》2018年第6期832-835,共4页Acta Metrologica Sinica

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）.

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 

分 类 号：TB933[一般工业技术—计量学]