Patent ID: 7153690
Filing Date: 2006-12-26
Classification: G05D,H01L,Y10T

Abstract:
1. A multicomponent fluid monitoring and compositional control system for maintaining concentration of benzotriazole (BTA) in the multicomponent fluid in a bath implied in a fluid-using processing facility, said monitoring and compositional control system comprising: (a) an analyzer unit comprising a sampling system and a reagent dispensing system, wherein said analyzer unit is constructed and arranged to monitor a concentration of BTA in the multicomponent fluid by potentiometric titration utilizing a silver chloride ion selective sensing electrode (ISE) placed in a reaction vessel; and (b) a control unit, constructed and arranged to compare results of the potentiometric titration to pre-programmed specifications and responsively adjust in real time the relative amount or proportion of BTA in the multicomponent fluid using the reagent dispensing system, to maintain a predetermined compositional character of the multicomponent fluid, wherein the control unit comprises a computation unit having associated therewith stored software and parameters pertaining to a methodology for conducting the titration of BTA and for determination of the concentration of BTA based on said titration results, said computation unit being constructed and arranged to direct a specific analysis sequence to be undertaken by the analyzer unit in conducting the BTA titration, including finding of endpoint(s), and to calculate and report the concentration of BTA based on results of the titration analysis.