KS E ISO 7194-1-2003 封闭管道内液体流量测量.第1部分:利用流速计或皮托静压管对圆形管道中不均匀成旋涡状态流量测量的速度.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