Flödesgivare vortex

Flödesgivaren av vortex-typ utnyttjar ett fenomen som kallas von Kármáns virvelgata. Virvlar i flödet, vars frekvens är proportionell mot flödeshastigheten, träffar en piezoelektrisk paddel. Frekvensen på utsignalen är direkt proportionell mot flödeshastigheten.

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