计量学报2023，Vol.44Issue(12)：1842-1846,5.DOI:10.3969/j.issn.1000-1158.2023.12.09
质量砝码和压力砝码活塞式压力计的计量误差
Measurement Errors of Piston Pressure Gauge for Mass Weights and Pressure Weights
摘要
Abstract
The types of weights used in existing piston pressure gauges are pressure nominal weights and mass nominal weights,both of which produce different principles of error and lead to different outcome of error.For free distortion pistons,a pressure error model is developed based on the effect of the deformation coefficient on the effective area of the piston,and a general formula for the relative error in pressure generated by using pressure nominal weights and mass nominal weights is derived.Using a piston pressure gauge with a measurement range of 10 to 510 MPa as the object of study,error calculations and comparative analyses are carried out to obtain the variation pattern of the pressure errors of the two types of weights.The results show that,under the same conditions,the pressure scale weights produce an additional error of up to-0.0041%within each pressure band due to the repeated use of small,unnumbered weights compared to the mass scale weights.关键词
压力计量/活塞式压力计/计量误差/质量标称砝码/压力标称砝码Key words
pressure measurement/piston pressure gauge/metrology error/mass nominal weight/pressure nominal weight分类
通用工业技术引用本文复制引用
庞桂兵,杨逸,樊双蛟,杨远超..质量砝码和压力砝码活塞式压力计的计量误差[J].计量学报,2023,44(12):1842-1846,5.基金项目
辽宁省教育厅科学研究经费项目(LJKZ0510) （LJKZ0510）
中国计量科学研究院基本科研业务费重点领域项目(AKYZD2303-2) （AKYZD2303-2）
