Практически все существующие сенсоры не в состоянии оценить скорость движения каждой отдельной фазы и производят оценку только линейной скорости несущей фазы.

Flowrate Sensors

  Mechanical spinner (FBS, ILS, CFS) 

  Thermoanemometer (HEX)

  Ultrasonic (UZI)

  Oxygen Activation (OA)

  XY Caliper (XYC)

Flow Velocity

  Calibration cross-plot (threshold, slope, non-linearity and ceiling at high V)

  Flow velocity calculation (cable speed correction)

Flowrate Profile 

  Cross-sectional flow profile (from parabolic for laminar flow to flat for turbulent flow) and how to set the correction coefficient

  Building Q and QZI profiles

  Additional Analysis and QC 

   Against FBS/ILS/HEX stations 

   Against the latest production tests and reallocated production history

   Against pipeline pressure drop (flowing vs shut-in)

   Understanding of flowrate accuracy