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Associated parameter measuring and/or monitoring such as in the evaluation of pressure differences

  • US 6,526,357 B1
  • Filed: 08/01/2000
  • Issued: 02/25/2003
  • Est. Priority Date: 08/09/1999
  • Status: Expired due to Term
First Claim
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1. A method for determining a parametric difference between first and second fluids in a fluid system, said fluid system having a first and a second fluid container each containing one of the respective first and second fluids, the first fluid container having a first parametric transducer operatively associated therewith, the second fluid container having a second parametric transducer operatively associated therewith, the method comprising the steps of:

  • a) subjecting the first and second transducers to a pre-selected parametric value;

    b) recording in a data table the respective first and second parametric measurements measured by the first and second transducers as a result of being subjected to said pre-selected parametric value, and calling these parametric measurements recorded correction quantities;

    c) repeating the above steps a) and b) for a set of pre-selected parametric values;

    d) exposing the respective first and second transducers to the respective first and second fluids in the first and second fluid containers in operation; and

    e) calculating the operational parametric difference as follows;

    1) measuring the first and second operational parametric values;

    2) locating in the data table the recorded correction quantities closest to the first and second operationally measured parametric values;

    3) converting the operationally measured parametric values into first and second corrected parametric values to find the parametric difference according to;

    parametric difference=first corrected parametric value−

    second corrected parametric value.

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