Honeywell-Measurex Corporation

Honeywell-Measorek Corporation

Ord Millar

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 &frac13; to &frac14; 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.

Multi-electrode composition measuring device and method

A apparatus and method for in-situ treatment of electrodes in liquid environments in which a solution supply orifice is located near an electrode to be cleaned, and when cleaning is desired, a treatment solution from the solution supply orifice is directed against the electrode or electrodes. A cleaning baffle may be placed over the electrodes to better direct the treatment solution. The electrodes may be cleaned of the treatment solution by directing a flow of gas or a second treatment solution against the electrodes, subsequent use of the first treatment solution.

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Pierrefonds, Canada

Ord Millar