摘要
对LJ20-1A型旋桨流速仪抽样检定做可行性验证总结。用"干式法"检测设备作为槽检抽样检定的辅助工具,检测旋桨螺旋角A、旋转支承摩阻力矩M,按A值精细分组,科学抽样,在华北水文仪器检测中心检定。验证表明,总体精度高,中高、低速直线公式标准化,生产、使用都很方便。
The article makes a summary on verification of feasibility study of model LJ20-1A propeller type current meter under random sampling. The dry test equipment is used for the calibration as an auxiliary tool of the calibration tank. The calibration is done by north china inspection and testing center of hydrometric instrument, helical angel of propeller (A) and bearing friction moment (M) are given, and scientific sampling is made according to A. The verification shows that the meters are of high precision, linear equations for middle-high and low velocities are standard, and it is convenient for production and use.
出处
《水利信息化》
2012年第2期46-52,共7页
Water Resources Informatization
关键词
旋桨流速仪
干式
检测
抽样检定
propeller type current meter
dry testing method
calibration
random sampling