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公开(公告)号：EP1991842A1
公开(公告)日：2008-11-19
申请号：EP07709363.1
申请日：2007-02-20
IPC分类号： G01F23/284 , G01F23/14 , G01F25/00
CPC分类号： G01F23/284 , G01F23/18 , G01F25/0061 , G01S13/08
摘要： A method and system for determining a product level in a tank, comprising determining a first level measure using emission of electromagnetic waves into the tank, detecting a differential pressure, determining an observed density based on the detected differential pressure and the first level measure, and determining a second level measure based on the observed density and a currently measured differential pressure. The present invention is based on the realization that a level measurement based on differential pressure and an observed density can provide a valuable redundant level measurement. Such a redundant measurement can provide increased reliability and enable detection of errors.
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