Level measurement and control
Patent 4092860 Issued on June 6, 1978. Estimated Expiration Date: 
June 6, 1995. 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.
June 6, 1995. 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 3772531 3848616 Apparatus for generating an electrical signal indicative of liquid level Patent #: 4010650 Inventors
ApplicationNo. 622398 filed on 10/14/1975US Classes:73/304RImmersible electrode typeExaminersPrimary: Woodiel, Donald O.Attorney, Agent or FirmInternational ClassG01F 023/24Foreign Application Priority Data1974-10-14 NLAbstractMethod and arrangement for measuring and controlling the level of a fluid in a container. The conductivity of the fluid is measured by means of a detector and a high-frequency voltage supply. The detector operates on a capacitive or on an inductive basis. Means for eliminating the effect of the size of the container and of the transfer functions of the detector and, in the control arrangement, the pump. | |
