Fan type mass airflow meter

Details Fan type mass airflow meter Fan type mass airflow meter

G - Physics

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G01F 1/56 (2006.01) G01F 1/78 (2006.01) G01F 1/80 (2006.01)

Patent

CA 1152771

D-4,318 C-3236 FAN TYPE MASS AIRFLOW METER Abstract of the Disclosure A fan in a duct driven by a permanent magnet D.C. motor powered by a constant voltage source varies in speed according to the airflow through the duct. The current drawn by the motor is a direct function of the air speed and the density. The motor current is measured to provide a measure of mass airflow.

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