摘要
本文根据气体流量计检定工作时的临界流文丘喷嘴法气体流量标准装置,分析装置最大背压比的置信水平对量值传递可靠性的影响,并探讨最大背压比的控制方法,确保了该装置均在临界流状态工作及准确度。
In this paper,the influence of the confidence level of the maximum back pressure ratio on the reliability of quantity transfer is analyzed according to the critical flow Venturette nozzle gas flow standard device for gas flowmeter verification,and the control method of the maximum back pressure ratio is discussed to ensure that the de-vice works in the critical flow state and its accuracy.
作者
陈奕湘
刘莉
周乔楠
CHEN Yixiang;LIU Li;ZHOU Qiaonan
出处
《计量与测试技术》
2023年第12期45-47,共3页
Metrology & Measurement Technique
基金
广州市市场监督管理局科技项目(项目编号:2022kj25)。
关键词
最大背压比
临界流文丘里喷嘴
气体流量装置
置信水平
maximum back pressure ratio
critical flow venturi nozzle
gas flow device
confidence level
