With no moving parts the flow sensor is not sensitive to particles, has marginal pressure loss and high accuracy; suitable for heating circuit water with the usual additives and for drinking water. The VORTEX flow sensor is also convenient for measuring flow rate of non electric conductive fluids (osmosis, demineralised water).

The flow sensor is based on the principle of Karman’s vortex trail. The shedding of vortices on the damming body in the flow is directly proportional to the speed of the flow. A piezoelectric paddle detects the generated vortex and the electronic converts it to a frequency signal or to an analogue 4-20 mA signal.