What type of flow meter would you classify a flow nozzle as?

A flow nozzle is classified as an area-based meter because it operates based on the principle of measuring the cross-sectional area through which a fluid passes. The design of a flow nozzle reduces the flow area, leading to an increased fluid velocity as it passes through. By employing Bernoulli’s equation, the flow rate can be calculated from the pressure difference created by this area reduction.

Area-based meters are characterized by their dependence on the area of the flow path, and they determine flow rate indirectly by measuring the pressure drop across the nozzle. This measurement reflects the area available for fluid flow and provides a means of calculating the flow rate based on the relationship between area, velocity, and pressure.

Understanding this classification helps in selecting the appropriate flow measurement device for a specific application, as area-based meters are effective for certain flow conditions and use cases.