| 摘要 |
A liquid level sensor and controlling assembly disposed and mounted in direct communication with a reservoir of liquid to be monitored and including a float structure connected to an elongated stem formed of magnetic material which is disposed to selectively move, in accordance with the movement of the upper surface level of the liquid between a primary coil and a secondary coil. A constant voltage supplied to the primary coil results in a magnetic flux and a voltage being induced into the secondary coil based upon position of the magnetic material stem relative to the secondary coil thereby determining that the induced voltage in the secondary coil is directly related to the level of the liquid since the position of the magnetic stem within the secondary coil is controlled by the level of liquid within the reservoir. A control circuit or electrical facility could be activated or controlled by the induced voltage which in turn could operate a supplementary device such as a liquid fill valve in order to fill the reservoir with additional liquid when needed.
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