气体差压式流量计流出系数不确定度的评定  

Evaluation of the Uncertainty of Discharge Coefficient for Differential Pressure Flowmeters for Gases

作　　者：阎延 赵艳琴[1] YAN Yan;ZHAO Yanqin(AVIC CHANGCHENG INSTITUTE OF METROLOGT&MEASUREMENT,BEIJING 100095)

机构地区：[1]中国航空工业集团公司北京长城计量测试技术研究所,北京100095

出　　处：《中国科技纵横》2024年第6期85-87,共3页China Science & Technology Overview

摘　　要：差压式流量计是一种常用的流量测量仪表,广泛应用于多种工业领域。本文参照JJG 640-2016《差压式流量计检定规程》中流出系数的计算方法,依据JJF 1059.1-2012《测量不确定度评定与表示》,对差压式流量计的流出系数进行不确定度评定。Differential pressure flowmeter is a commonly used flow measurement instrument,which is widely used in many industrial fields.This paper refers to the calculation method of discharge coefficient in JJG640-2016“Verification Regulation of Differential Pressure Flowmeters”,and evaluates the uncertainty of discharge coefficient of differential pressure flowmeter according to JJF 1059.1-2012“Evaluation and Expression of Uncertainty in Measurement”.

关 键 词：差压式流量计 流出系数 不确定度 

分 类 号：TH814[机械工程—仪器科学与技术]