Laminar Air Flow Cabin

We have several air flow cabins, when we measure the air velocity (0.45m/s +/- 20%),

  • in wich rule appear the exactly number of points to measure the velocity?
  • all the points measured need to comply with the acceptance criteria or only the all points average.

Do you think the air flow velocity is constant with time???, measures show me time-variability +/- 0.10m/s

Example of typical validation report.

Here you find methodology for measurement unidirectional laminar flow.