Multi-electrode composition measuring device and method
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United States of America Patent
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Jul 9, 2002
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N/A
app pub date -
Feb 26, 1999
filing date -
Feb 26, 1999
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Abstract
The Applicant's invention comprises an apparatus and method for determining the amount of one or more components in a pulping liquor. At a first electrode, a varying voltage is supplied in a voltage range including the half-wave potential of each component of a liquor to be measured, and accounting for variations in the half-wave potential caused by changing process parameters. At a second electrode, which is roughly 1/3 to 1/4 the size of the first electrode, the derivative of current intensity is monitored near the known half-wave potential for the various liquor components. Using curve-fitting means, the derivative of current intensity and selected other process condition data is used to determine concentrations of the various liquor components.
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