| 摘要 |
PURPOSE: An automatic water level controller which displays water level of a water tank is provided to maintain and manage by checking the water level of the water tank in a pump chamber. CONSTITUTION: An automatic water level controller which displays water level of a water tank comprises a check valve(20), a pressure sensor(21), a flow sensor(22), and a controller(23). The check valve prevents water from flowing backward when an underwater motor is stopped. When the underwater motor drives, the water is supplied to the water tank. The pressure sensor senses the water level of the water tank through a connection valve(17). The controller receives a signal from the pressure sensor and the flow sensor and senses the water level of the water tank.
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