p.V.T.t法气体流量标准装置  

Gas Flow Calibration Facility by p.V.T.t Technique

作　　者：王鹏[1] 张永胜[1] 赵玉婷 WANG Peng;ZHANG Yongsheng;ZHAO Yuting(Changcheng Institute of Metrology&Measurement,Beijing 100095,China)

机构地区：[1]航空工业北京长城计量测试技术研究所,北京100095

出　　处：《计测技术》2021年第2期159-166,共8页Metrology & Measurement Technology

基　　金：国家“十二五”技术基础科研项目(JSJC2013205B201)。

摘　　要：为了满足高准确度气体流量计的量值传递需求,建立了一套p.V.T.t法气体流量标准装置,该装置由标准容器、温度传感器、压力传感器、标准流量积算仪等部分组成,工作时气体经过音速喷嘴充入标准容器,根据标准容器容积、充气时间及充气前后的压力、温度计算气体流量。该装置工作压力范围为0~0.6 MPa,流量范围为0.5~1000 m^(3)/h,扩展不确定度为0.1%(k=2),有效提升了本单位气体流量最高标准的准确性,增强了量值传递能力。The gas flow calibration facility by p.V.T.t technique is established for the value transmission of high accuracy gas flowmeter.It is composed of standard containers,temperature sensor,pressure sensor,standard flow accumulator,etc.When the facility is operating,gas flows through the sonic nozzle into the standard container.The gas flow can be calculated according to the volume of the standard container,inflow time,temperature and pressure.The working pressure range of the calibration facility is 0~0.6 MPa,the flow range is 0.5~1000 m^(3)/h.The extended uncertainty of the calibration facility is 0.1%(k=2).The development of facility improves the uncertainty of the highest gas flow standard equipment in the CIMM,and enhances the ability of value transmission.

关 键 词：p.V.T.t 气体流量 正压 常压 不确定度 

分 类 号：TB937[一般工业技术—计量学]