发明名称 COMPENSATING FOR FREQUENCY CHANGE IN FLOWMETERS
摘要 Motion is induced in a conduit that contains a fluid. The motion is induced such that the conduit oscillates in a first mode of vibration and a second mode of vibration. The first mode of vibration has a corresponding first frequency of vibration and the second mode of vibration has a corresponding second frequency of vibration. At least one of the first frequency of vibration or the second frequency of vibration is determined. A phase difference between the motion of the conduit at a first point of the conduit and the motion of the conduit at a second point of the conduit is determined. A quantity based on the phase difference and the determined frequency is determined. The quantity includes a ratio between the first frequency during a zero-flow condition and the second frequency during the zero-flow condition. A property of the fluid is determined based on the quantity.
申请公布号 EP1989517(A4) 申请公布日期 2011.11.23
申请号 EP20070756939 申请日期 2007.02.13
申请人 INVENSYS SYSTEMS, INC. 发明人 TOMBS, MICHAEL, S.
分类号 G01F1/80 主分类号 G01F1/80
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