| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid level sensor enabling simplification of a signal wiring or the like. SOLUTION: The liquid level sensor comprises a sensor part which detects the liquid level in a vessel, a processing part which processes a detected signal of the sensor part into a signal state which can transmit by a specific small power radio frequency, and an antenna which carries out a radio frequency wave transmission of the signal processed by the processing part. The sensor part consists of preferably one electrode extending to a displacement direction of the liquid level in the vessel or at least one pair of electrode which is set with an interval mutually and counter placed layout. COPYRIGHT: (C)2008,JPO&INPIT
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