摘要
大口径静态容积法水流量标准装置的不确定度主要来源于计时器、换向器、工作量器及标准量器四部分,针对上述四个部件引入的不确定度分量分别进行了探讨,进而得到整套大口径装置的合成不确定度与扩展不确定度。本次不确定评定实验在广州能源检测研究院液体流量实验室的水大流量装置上开展,其最大测试管径达DN1000、最大运行流量为10000m^(3)/h,测试与计算结果表明:该装置的扩展不确定度为U=0.037%(k=2),符合计量检定规程中规定的不确定度要求。
The uncertainty of the water flow standard facility of static volume method mainly comes from four parts:timer,diverter,working meter and standard meter.The uncertainty components introduced by the above four parts are discussed respectively,and then the combined uncertainty and extended uncertainty of the whole standard facility are obtained.The uncertainty assessment experiment was carried out on the water large-flow standard facility in the liquid flow laboratory of Guangzhou Institute of Energy Testing,with the maximum test pipe diameter of DN1000 and the maximum operating flow rate of 10000m^(3)/h.The test results show that the final synthesis uncertainty of the static method water flow standard facility is U=0.037%(k=2)<0.05%,which meets the requirements of the regulations.
作者
钱碧波
吴波
谢小芳
王冬暄
QIAN Bibo;WU Bo;XIE Xiaofang;WANG Dongxuan
出处
《计量与测试技术》
2021年第7期113-116,共4页
Metrology & Measurement Technique
关键词
液体流量标准装置
大口径
静态容积法
不确定度评定
liquid flow standard facility
large diameter
static volume method
uncertainty assessment
