ASAIR high-precision vortex street liquid water flow sensor water flow sensor digital flow switch AFD2 series

The AFD2 series is a water flow sensor based on the von Karman vortex street principle. When a fluid with a certain volume flow rate passes around a turbulent column under certain conditions, double row vortices with opposite rotation directions and regular arrangement will periodically form on both sides of the turbulent column. After nonlinear action, a Karman vortex street is formed. The frequency of vortex formation is proportional to the flow velocity, and sensors detect these vortices to measure the flow rate of the fluid inside the pipeline.