Measuring andor monitoring method, especially for

专利名称：Measuring and/or monitoring method,

especially for the evaluation of pressure

differences

发明人：Soussan, Daniel A.,Miller, Douglas P.

申请号：EP00306556.2

申请日：20000802

公开号：EP1078642A2

公开日：

20010228

专利内容由知识产权出版社提供

专利附图：

摘要：Means and methods for using calculated correction quantities to modify

measured parametric values to arrive at a closer approximation of an actual parametric differential. The correction quantities used herein are obtained by preliminarily subjecting the system parametric transducers to various pre-selected parametric values and recording the corresponding measured values for each transducer in a data table for later use as or in correction quantities. A first use of such correction quantities is to interpolate relative to the closest data table values to the operationally measured

parametric value and use the resulting interpolated value as the corrected parametric value. This interpolation is preferably performed for each of two parametric transducers, one for each of two associated subject substances. The resulting corrected parametric values are then subtracted to obtain the approximated parametric difference. This correction scheme may be even further improved by using the correction quantities of a reference parametric transducer in the interpolation calculations of the first two parametric transducers. Similarly, other correction quantities can be recorded in the data table such as the differences between the two measured parameters of each of the first two transducers. These quantities can then be used to mathematically modify the operationally measured parametric differential. A reference transducer can be used here as well such that differences between one transducer and the reference transducer can be recorded in the data table as one set of correction quantities, and differences between the other transducer and the reference can be recorded as a second set of correction quantities. Both correction quantities may then be used in the ultimate determination of the parametric difference. A beneficial use is in determining pressure differences between associate fluids separated by a semi-permeable membrane, a value called the trans-membrane pressure or TMP.

申请人：Gambro, Inc.

地址：10810 West Collins Avenue Lakewood Colorado 80215 US

国籍：US

代理机构：Barlow, Roy James

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