KS E ISO 7194-1-2018 封闭管道中流体流动的测量 - 通过电流表或皮托静电管在圆形管道中旋转或不对称流动条件下流速测量的速度面积法
Measurement of fluid flow in closed conduits — Velocity-area methods of flow measurement in swirling or asymmetric flow conditions in circular ducts by means of current meters or pitot static tubes