指针压力表智能检定系统误差分析及检测精度评价方法  

Error analysis of intelligent verification system of pointer pressure gauge and measurement accuracy evaluation method

作　　者：屠岩 屠彬彬[2] 朱海清 黎少鸿 TU Yan;TU Binbin;ZHU Haiqing;LI Shaohong(College of Mechanical Engineering,Jiangnan Universityg,Jiangsu Wuxi 214122,China;Zhejiang Province Institute of Metrology,Zhejiang Hangzhou 310018,China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]浙江省计量科学研究院,浙江杭州310018

出　　处：《工业仪表与自动化装置》2023年第4期98-102,共5页Industrial Instrumentation & Automation

基　　金：《基于电磁平衡原理的活塞式压力计自动校准系统关键技术研究》项目(2021MK046)。

摘　　要：该文首先介绍了指针压力表检定要求与检定流程及智能化检定技术对压力表检定工艺的改进;随后提出了一套指针压力表智能检定系统并介绍了各部分主要功能;接着通过14点稳压标准压力试验分析指针压力表智能检定系统的误差,根据正态性检验、重复性分析及不确定度分析的结果表明,指针压力表智能检定系统造压精度满足0.05%FS要求,且误差呈正态分布。最后提出了指针压力表示值检测精度评价方法,为智能化检定装置提供了分级依据。This paper first introduces the verification requirements and verification process of pointer pressure gauge and the improvement of intelligent verification technology to the verification process of pressure gauge.Then a set of intelligent verification system of pointer pressure gauge is put forward and the main functions of each part are introduced.Then,the error of the intelligent verification system of pointer pressure gauge was analyzed through the 14-point standard pressure test.According to the results of normality test,repeatability analysis and uncertainty analysis,the pressure building accuracy of the intelligent verification system of pointer pressure gauge meets the requirement of 0.05%FS,and the error is normally distributed.Finally,a method to evaluate the detection accuracy of pointer pressure representation value is proposed,which provides a classification basis for intelligent verification device.

关 键 词：指针压力表 智能检定 误差分析 不确定度 检测精度 

分 类 号：TH823.2[机械工程—仪器科学与技术]