便携式超声波流量计的量值溯源方法及流量测量研究  

Research on the Traceability Method and Flow Measurement of the Portable Ultrasonic Flowmeter

作　　者：马龙博[1] 陈果夫 张宁宁[1] 

机构地区：[1]浙江省计量科学研究院国家液体流量计量器具质量监督检验中心实验室,杭州310018

出　　处：《自动化与仪表》2017年第1期30-33,共4页Automation & Instrumentation

基　　金：浙江省自然科学基金项目(LY15F030001)

摘　　要：针对便携式超声波流量计的溯源问题,首先给出了便携式超声波流量计的流量测量模型,根据模型推导过程提出了便携式超声波流量计的特征系数与管道内径无关的结论;基于该结论在水流量标准装置的50 mm和100 mm规格管道上进行了流量测量实验,实验流速范围为0.3~3 m/s。结果表明,该文提出的便携式超声波流量计的特征系数与管道规格口径无关的结论是可行的,可以将该结论应用于便携式超声波流量计的溯源。To overcome traceability difficulties of the portable ultrasonic flowmeter,the flow measurement model of the portable ultrasonic flowmeter had been derived and the conclusion that the characteristic coefficient of the portable ultrasonic flowmeter has nothing with the pipe size had been put forward according to the derivation of the flow measurement model. The experimental research on the flow measurement was carried out in the flow calibration fa- cility with 50 mm and 100 mm pipe. The experimental flow velocity was from 0.3-3 m/s. Experimental results show that,the conclusion of the characteristic coefficient has nothing with the pipe size is correct,and the conclusion could be used for the traceability of the portable ultrasonic flowmeter.

关 键 词：超声波流量计 流量测量 测量误差 测量模型 特征系数 

分 类 号：TH71[机械工程—测试计量技术及仪器] TH89[机械工程—仪器科学与技术]