The fundamental principle of water flow sensor

Water flow sensor is a kind of indispensable industrial control products.In addition to water flow sensor,water level sensor, rectifying sensor and so on, these sensors all make a contribution to industrial control industry.They are different from tension controller,automatic tension controller,NETS,rectifying device in usage and function.But they are all indispensable in industrial control machine.

In recent years,the practice of application shows that water flow sensor has such features:simple structure, high reliability,wide measurement range and so on.So do you know according to which fundamental principle water flow sensor can work.

Water flow sensor takes advantage of Hall effect of the Hall Component. to measure the magnetic physical quantity.You can serial-in load resistance on positive pole of Hall component and make the direction of current and field direction quadrature with DC5V.

When the water go through the turbo switch shell ,it will push the magnetic rotor rotate.and generate rotating magnetic field of different magnetic pole,then cut magnetic induction lines,at last generating high and low pulse level.Due to the output pulse signal frequency of the Hall component is proportional to the speed of a magnetic rotor,and the speed of a magnetic rotor is proportional to the water flow rate.so according to the water flow rate,we can start gas water heater.The empirical equation of pulse signal frequency is:f=8.1q-3(f : pulse signal frequency,Hz,q:water flow rate,L/min)The feedback signal of water flow sensor indicate the value of water flow rate by controller.According to different types of gas water heater,choose the best start-up flow rate,can realize ultra low voltage start-up(below 0.02 MPa)

The industrial control products including water flow sensor,water level sensor, rectifying sensor,tension controller,NETS and so on, although are unknown to ordinary people,but they serve us in our daily life and production all the time.