Krohne Vortex FAD Meter Model VFM5090

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Computation of the FAD (Free Air Delivery) of a Compressor using the Krohne Vortex FAD Meter Model VFM5090 FAD.

Brief Description of the FAD of a COMPRESSOR

Although FAD stands for Free Air Delivery, it is the amount of Atmospheric Air (Free Air) that can be sucked in by the Compressor at inlet conditions( Suction Side ) of

	Atmospheric Pressure at 1 atmosphere.
	Atmospheric Temperature at 20°C/15°C.
	Relative Humidity at 0% (100% Dry Air) &
	The motor RPM at 100% of its rated value

The Krohne Vortex FAD meter VFM 5090 FAD is installed at the outlet
(Discharge Side ) of the compressor, where the

	Operating pressure is typically 7 to 10 Bar (g).
	Operating temperature may be close to 35-40°C or higher (in case of no after cooler)
	Relative humidity is 70% to 100% &
	The RPM of the Motor Shaft may be 80% of its rated RPM value.