The water shortage protection function is to give a reminder or automatic power off when the water tank is short, and realize the protection function when the water shortage to prevent the machine from dry burning. So what can be used to achieve the water shortage protection function of the water tank?
Capacitive liquid level sensor A non-contact liquid level sensor that can be detected by fitting the outer wall of the water tank. The great advantage of the capacitive liquid level sensor is that it does not contact the liquid, so the liquid corrosion and pressure do not affect the operation of the sensor. The disadvantage is that it cannot be used in metal containers, and the wall thickness of the container will also affect the sensitivity of the sensor. For this model, the sensitivity is customized for the customer, to test the customers water tank, and adjust the software and determine the appropriate sensitivity according to the test results.
Non-contact liquid level sensor can be divided into two categories: single point and multipoint. A single-point photoelectric liquid level sensor can only detect a change in one liquid site, while a multipoint can detect at least several points. Usually achieve water shortage protection with a single point, but if you want to achieve dual protection, can use multipoint photoelectric liquid level sensor, can use two multipoint liquid level sensor, detection at the bottom of the two liquid level, liquid level down to a liquid level, the sensor gives signal to remind the user to add water, the liquid level down to the second point the sensor signal, according to the device received signal drive pump to achieve automatic water function.
