Calibration procedure that improves accuracy of electrolytic con

Details Calibration procedure that improves accuracy of electrolytic con Calibration procedure that improves accuracy of electrolytic con

1997-10-24

1999-02-16

Do, Diep N.

Electricity: measuring and testing

Electrolyte properties

Using a conductivity determining device

324444, 324446, 73 102, 702 85, G01N 2702

Patent

active

058724540

ABSTRACT:
Disclosed is a two-point calibration procedure, that when used with a mathematical algorithm, improves the accuracy of electrolytic conductivity measurements by correcting for non-linear behavior of conductivity cells. Unlike purely mathematical means of correcting for non-linearity which may use second or higher order equations, this algorithm has the following advantages: it is based on an analysis of the physical phenomena which are responsible for non-linearity; it yields one unique solution, i.e., it uses an equation that has only one root; and it yields diagnostic information concerning the behavior of the cell. A conductivity system utilizing the described algorithm was built and tested and led to the development of the following enhancements which are also described: display of a parameter which indicates the degree of non-linearity; a means of automatically recognizing specific standardizing solutions; and a temperature-compensated algorithm for determining when a conductivity measurement signal is stable.

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