Flow measurement module and method
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United States of America Patent
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Apr 20, 2004
Grant Date -
Jul 17, 2003
app pub date -
Jan 16, 2002
filing date -
Jan 16, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A flow measurement module is adapted to operate in conjunction with a control valve assembly to measure a flow rate of a fluid though a flow passage regulated by the control valve assembly. The flow measurement module is communicatively coupled to an intelligent positioner within the control valve assembly to receive data pertaining to the position of the throttling element within the flow passage. The position of the throttling element is used to identify at least one associated valve sizing coefficient. The flow measurement module determines the flow rate of the fluid through the flow passage based on a sensed upstream pressure, a sensed downstream pressure and the valve sizing coefficient associated with the position of the throttling element within the flow passage.
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