|
|||||
|
|
| 空气中双称量法砝码体积测量方法的研究 | |
| 引用本文： | 苏祎,王阳,熊忠琪,韩瑜. 空气中双称量法砝码体积测量方法的研究[J]. 计量学报, 2020, 41(12): 1500-1504. DOI: 10.3969/j.issn.1000-1158.2020.12.09 |
| 作者姓名： | 苏祎 王阳 熊忠琪 韩瑜 |
| 作者单位： | 1. 上海市计量测试技术研究院,上海 201203 2. 中国合格评定国家认可委员会,北京 100062 |
| 摘 要： | 利用被测砝码和参考砝码在2种不同密度的空气介质中比较称量时,砝码间的质量差与空气密度差成线性变化这一特性,通过最小二乘法拟合质量差随空气密度差变化的曲线,提出了空气中双称量法砝码体积测量方法。基于空气中双称量法砝码体积测量数学模型和测量装置工作原理,分析影响测量结果的3个主要因素:2次测量的大气压变化范围,砝码表面解吸作用和质量比较仪计量特性。以10g~1kg OIML不锈钢砝码为例,将该方法测得的体积与液体静力比较法的测量结果比对,En值评定结果小于1。 |
| 关 键 词： | 计量学 体积测量 砝码 空气中双称量法 液体静力比较法 |
| 收稿时间： | 2020-01-09 |
Research on Volume Determination Method of Double Weighing in Air |
|
| SU Yi,WANG Yang,XIONG Zhong-qi,HAN Yu. Research on Volume Determination Method of Double Weighing in Air[J]. Acta Metrologica Sinica, 2020, 41(12): 1500-1504. DOI: 10.3969/j.issn.1000-1158.2020.12.09 | |
| Authors: | SU Yi WANG Yang XIONG Zhong-qi HAN Yu |
| Affiliation: | 1. Shanghai Institute of Mearsurement and Testing Technology,Shanghai 201203,China 2. China National Accreditation Service for Conformity Assessment,Beijing 100062,China |
| Abstract: | To study the linear change of mass difference and air density difference under two different air densities when comparing the test weight and reference weight, the least square method is used to fit the curve of mass difference and air density difference, and the double weighing in air volume determination method is proposed.Based on the mathematical model and the working principle of the measuring device, three main factors affecting the results are analyzed: the range of atmospheric pressure, the desorption of the weight surface and the mass comparator. Taking the 10g~1kg OIML stainless steel weight as an example, the volume determined by this method is compared with the result of the hydrostatic method, and the normalized error En is less than one. |
| Keywords: | metrology volume determination weight double weighing in air method hydrostatic method |
| 本文献已被 万方数据 等数据库收录！ | |
| 点击此处可从《计量学报》浏览原始摘要信息 | |
| 点击此处可从《计量学报》下载全文 | |
