System to measure the state of corrosion of buried metallic...

G - Physics – 01 – N

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G01N 17/02 (2006.01)

Patent

CA 2408248

The present invention is related to a system for measuring the state of corrosion of a buried metallic structure, such as a pipe line, characterized in that said measurement system allows said corrosion measurement simultaneously and continuously in time on several locations of said buried structure. The measurement system comprises a measuring cable (1), itself comprising several current electrodes (2) and several measuring electrodes (3), several addressable switching devices (20) and an electrical bus (6), a reference electrode (5) and a control system (4) comprising an embedded controller (8), an interface board (9) and a measurement board (7), wherein said measurement board (7) comprises an AC and/or DC voltage generator (50) and a voltage measurement device (51). The present invention is also related to the use of said measurement system for various corrosion measurements and for a number of applications not related to corrosion.

La présente invention concerne un système permettant de mesurer le niveau de corrosion d'une structure métallique enfouie, telle qu'une canalisation, caractérisée en ce que ledit système de mesure permet de mesurer ladite corrosion, de manière simultanée et continue dans le temps, à divers emplacements de ladite structure enfouie. Ledit système de mesure comprend un câble de mesure (1), comportant lui-même plusieurs électrodes de courant (2), plusieurs électrodes de mesure (3), plusieurs dispositifs de commutation adressables (20) et un bus électrique (6). Ce système de mesure possède également une électrode de référence (5) et un système de commande (4), comprenant un contrôleur intégré (8), une carte interface (9) et une carte de mesure (7), ladite carte de mesure (7) comportant un générateur de tension CA et/ou CC (50) et un dispositif de mesure de tension (51). La présente invention concerne également l'utilisation dudit système de mesure pour diverses mesures de corrosion et pour un certain nombre d'applications sans rapport avec la corrosion.

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