Patent ID: 7675297

Claim:
A method of using a multielectrode sensor to measure corrosion rate, comprising: (a) exposing the sensor to a corrosion environment of interest; wherein the sensor has an array of substantially similar metallic electrodes arranged such that each electrode has a surface area operable to be exposed to the corrosion environment, and such that each electrode is electrically insulated from other electrodes; wherein each electrode is connected to a coupling joint though a switch that is normally closed and allows the electrode to be disconnected or decoupled from the coupling joint; (b) measuring current from each electrode to the coupling joint; (c) identifying anodic electrodes based on the current from each electrode; (d) decoupling one or more of the anodic electrodes such that a higher percentage of electrons produced on the anodic electrode(s) that remain(s) connected to the coupling joint flow to the coupling joint.