Sensing apparatus
January 31, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2644050 2996915 3553575 Water depth measuring device Level measurement and control Capacitive means for measuring the level of a liquid Device for continuously measuring the liquid level in a container Apparatus for determining the liquid level in a tank Apparatus for determining the liquid level in a tank Capacitive scheme for measuring the level of a liquid InventorsAssigneeApplicationNo. 06/697005 filed on 01/31/1985US Classes:73/304C, Capacitative340/620, Electrode probe361/284Liquid levelExaminersPrimary: Frankfort, Charles E.Assistant: Will, Thomas B. Attorney, Agent or FirmInternational ClassesG01F 23/26 (20060101)G01F 23/22 (20060101) Foreign Application Priority Data1984-02-14 JPAbstractA sensing apparatus including: a first electrode member; a second electrode member arranged at opposing positions a predetermined distance away and electrically isolated from the first electrode member; and an electric circuit connected to the first and second electrode members. The first and the second electrode members are operatively connected by an impedance formed between the first and the second electrode members in response to existence of a substance to be sensed between the first and the second electrode members. The electric circuit outputs a signal in response to the impedance. The sensing apparatus is applicable for detecting, for example, the level of a liquid in a vessel. | |
