摘要
气体容积式流量计在气体流量计量领域应用广泛,其量值溯源过程中最小检定时间的确认直接关系到其量值的准确性。JJG 633-2024《气体容积式流量计》检定规程中,对气体容积式流量计的检定时间进行了相关的描述,但理论计算公式并未详细给出,该文依据JJG 643-2024关于检定时间的描述,对最小检定时间进行详细分析与理论推导,并依据此理论推导,对实际算例进行了计算分析。结果表明,在小流量点,理论计算检定时间急剧增加,检定效率降低,在中高流量点,理论计算结果对检定工作具有更强的实际指导意义。
Displacement gas meters are widely used in the field of gas flow measurement,and the confirmation of the minimum verification time during the traceability process directly affects the accuracy of their measurement values.In the verification regulation of JJG 633-2024"Displacement Gas Meters",the verification time of displacement gas meters is described,but the theoretical calculation formula is not provided in detail.Based on the description of verification time in JJG 643-2024,this article conducts a detailed analysis and theoretical derivation of the minimum verification time,and based on the theoretical derivation,calculation and analysis were carried out with practical examples.The results indicate that at low flow points,the theoretical calculation verification time increases sharply and the verification efficiency decreases.At medium and high flow points,the theoretical calculation results have stronger practical guidance significance for verification work.
作者
赵进涛
李靖
段飞飞
张驰
丁凌
康勇
ZHAO Jintao;LI Jing;DUAN Feifei;ZHANG Chi;DING Ling;KANG Yong(Shaanxi Institute of Metrology Science,Shaanxi Xi′an 710100,China;Northwestern Polytechnical University,School of Aeronautics,Shaanxi Xi′an 710100,China)
出处
《工业仪表与自动化装置》
2025年第3期102-105,共4页
Industrial Instrumentation & Automation
关键词
气体容积式流量计
检定时间
理论计算
回转体积
displacement gas meters
verification time
theoretical calculation
cyclic volume of gas meter
