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Flow measuring unit - rectangularFRA

FRA is a measuring unit with a measuring cross, which is used for measuring volume flow in rectangular ducts.

FRA is equipped with a Belimo VRD3, which provides an output signal that is proportional to the volume flow.

The FRA needs a certain distance of straight duct before the unit and this has to be observed to obtain a stable and accurate air flow regulation.

  • Requires minimal initial pressure (<20 Pa at Vnom)
  • Output signal indicates actual volumeflow.