Micro Hall and Optical Flow Sensor with small flow range suitable for water machine coffee machine
Working principle
● Hall Flow Sensor:
Using the Hall effect, the impeller with the two-pole magnet is placed
perpendicular to the magnetic field, and the GS value generated by the
rotation of the impeller is converted into a pulse signal output.
Features: Contains ferrite magnets inside, with stable and reliable accuracy.
Liquid requirements: good fluidity, no strong corrosiveness.
● Optical Flow Sensor:
Using the pulse signal generated by the cutting light path of the impeller, the water flow is measured by calculating the number of rotations of the runner.
Features: no magnets inside, pure optical induction, better protection of water quality
Liquid requirements: There are requirements for the light transmittance of the liquid, and liquids with poor light transmittance cannot be detected.
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