

The liquid flow sensor is made of a plastic body, a flow rotor and a Hall sensor. The flowing liquid causes the impeller to turn. The greater the fluid flow, the greater the rotational speed. The Hall sensor detects every rotation and sends the signal as a pulse. Each revolution is approximately 1/450 liters of liquid. The sensor can be used in projects such as coffee machines or sprinklers. The module is supplied with the voltage in the range from 3.5 to 12 V and can measure the liquid flow in the range of 1 to 30 l/min. The product Wiki page has an instruction and sample Arduino code.
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