TThe controller can control the liquid level according to the change of the signal, such as detecting that no water drives the pump to add water, or reaching a high level to stop the pump from adding water.
Capacitive level alarm switch is mainly attached to the outer wall of the container for detection. It is a non-contact detection and cannot be immersed in water. The advantage is a wide range of detectable liquids, which can be used to detect corrosive and edible liquids, because it will not contact with liquids and will not cause chemical reactions with liquids. It can be used in home appliances, humidifiers, aromatherapy machines, and water dispensers and medical equipment.
Capacitive level alarm switches cannot detect high temperature liquids, such as liquids in hot water tanks in water heaters. High temperature will make the sensor ineffective. The Capacitive level alarm switch must be used in an environment below 60 °, preferably at 40 °. The liquid in the metal container cannot be detected, and the Capacitive level alarm switch can only be installed on non-metal containers. Capacitive level alarm switches cannot detect liquids with low conductivity, such as gasoline and diesel.
The Capacitive level alarm switch is non-contact, so it is very easy to install. For equipment that wants to replace the float sensor, the water tank structure does not need to be changed, and the installation space is very small. Considering the reliability and accuracy, the photoelectric level sensor is still higher. If the water tank allows change, we recommend using the photoelectric level sensor. Photoelectric liquid level sensors are divided into two types, one of which can also achieve non-contact detection. It has fast response speed and long service life, scale and sundries can also be avoided by software.