Circuit diagram of an automatic water level controller

Water level controllers are widely used in industrial boilers, civil construction pools, water towers, water tanks, as well as open or closed storage tanks in petrochemical, papermaking, food, sewage treatment and other industries, and for liquid level measurement of various liquids in underground tanks. The detected media can be divided into various conductive and non-conductive liquids such as water, oil, acid, alkali, industrial sewage, etc. Together with the electric valve, it forms a set of advanced liquid level display and control equipment, which automatically opens and closes the electric valve.

The following is a circuit diagram of an automatic water level controller using the 555 circuit . The water level controller refers to the control of high and low water levels through mechanical or electronic methods. It can control solenoid valves, water pumps, etc., and become an automatic water level controller or water level alarm, thereby achieving semi- automation or full automation .