A pressure-based air flow meter measures the rate of air flow through a pipe or duct by sensing the pressure difference between two points. The device consists of a sensor that is placed in the flow path, with one side of the sensor exposed to the flowing air and the other side connected to a reference point outside the flow path.
As air flows past the sensor, it creates a pressure drop across it. This pressure drop is proportional to the velocity of the air, which can be used to calculate the volumetric flow rate.
The pressure-based air flow meter is commonly used in HVAC systems, where it is important to monitor and control airflow for proper temperature and humidity control. It is also used in industrial processes such as chemical manufacturing and pharmaceutical production, where precise control over air flow rates is critical for product quality and safety.
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