Water level sensors are widely used for irrigation equipment, seawater and groundwater monitoring, and water flow rate monitoring at water pump stations for their good stability. In fact, their working principle is similar whether it is the level measurement of fresh water, sea water and sewage. Only for different media (or ranges), different stainless steel materials and processing chips are used to complete various industrial measurements.

For most people, the water level sensor is just a measuring instrument that can sense the water temperature and water level and convert the perceived water temperature level into a changing electrical signal. However, the “truth” is not the case. The water level sensor is an instrument that can convert the water level parameter of the measured point into a corresponding power signal in real time. The working principle of the water level sensor is: the sensor probe transmits the obtained water level signal to the controller by directly contacting the water in the container, and the computer in the controller compares the measured water level signal with the set signal to obtain a deviation, and then according to the deviation The nature of the instructions to the water supply electric valve to "open" and "off" to ensure that the container reaches the set water level. In addition, after the water inflow procedure is completed, the temperature-controlled portion of the computer issues an "open" command to the electric valve that supplies the heat medium, and the system begins to heat the water in the container. When the temperature is set, the controller will issue a command to close the valve, cut off the heat source, and the system enters the heat preservation state. During the programming process, ensure that the system does not open the electric control valve that controls the heat source without reaching the safe water level, thus avoiding heat loss and accidents.

After a variety of harsh environmental tests, water level sensors play a pivotal role in modern industrial measurements.