计量学报2025，Vol.46Issue(5)：681-686,6.DOI:10.3969/j.issn.1000-1158.2025.05.09
基于静水拖曳法的超声测流装置时间差测量能力评价方法研究
Research on the Evaluation Method of Time Difference Measurement Capability of Ultrasonic Flow Measuring Devices Based on the Hydrostatic Towing Method
摘要
Abstract
A measurement capability evaluation method based on the hydrostatic towing method was proposed to address the issue of difficulty in achieving traceability of the time difference of large-diameter ultrasonic flow measurement devices.Starting from the principle of ultrasonic flow measurement,a conversion model between ultrasonic transit time difference and flow velocity value was established.and an experimental testing device and traceability path based on the hydrostatic towing method were developed to verify the conversion model.The experimental test results of 6 sets of sensors indicated that the measurement capability evaluation method is feasible,and the standard uncertainty introduced by time difference measurement is 0.26～0.49 ns.关键词
流量计量/超声测流装置/时间差/溯源/静水拖曳法/不确定度Key words
flow measurement/ultrasonic flow measurement device/time difference/traceability/hydrostatic towing method/uncertainty引用本文复制引用
沈佳明,刘源,张柯,胡鹤鸣,谢代梁..基于静水拖曳法的超声测流装置时间差测量能力评价方法研究[J].计量学报,2025,46(5):681-686,6.基金项目
国家重点研发计划(2017YFF0206303) （2017YFF0206303）
中国计量科学研究院基本业务费重点领域项目(AKYZD2112) （AKYZD2112）
