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Many electrical appliances and equipment usually have water tanks. According to the intelligence situation of the product, the electrical water tank usually has these functions. When the water in the tank is about to run out, the system will prompt the user to add water. Or when there is no water in the tank, the equipment will stop working.
Usually many electrical appliances have the function of low liquid level detection, except for some transparent water tank design, or the electrical appliances without liquid level detection. The humidifier needs to have a function is the low liquid level detection, usually, when the liquid level sensor detects the low liquid level to remind, or when the remaining a small amount of water or the bottom liquid level detected in the tank has been used up, timely notify the user to add water or directly stop working.
To achieve this function, a non-contact level sensor can be installed at the bottom or bottom of the tank to be detected, and the level can then be detected. When the liquid level sensor position is in the water state, the capacitor is detected, and the sensor determines the water state. When the water level drops to a low water level, output a signal. Based on this situation, the sensor will determine that it is waterless and will signal to achieve low liquid level warning, water shortage and power failure.
