Pipe material discrimination

G - Physics – 01 – N

Patent

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Details

G01N 27/72 (2006.01) G01N 33/20 (2006.01)

Patent

CA 2448212

A method of and a corresponding apparatus for determining the material from which an underground pipe (10) is made, the method comprising exposing a portion of the pipe; applying a coil means (11) having a primary winding (13) and a secondary winding (14) to the exposed portion of the pipe such that the pipe contributes to an inductive coupling between the primary winding (13) and the secondary winding (14); applying an excitation current to the primary winding to induce in the secondary winding a signal indicative of an induction value of the pipe; and determining the material from which the pipe is made dependent upon the signal induced in the secondary winding.

L'invention concerne un procédé permettant de déterminer le matériel à partir duquel un conduit souterrain est fabriqué. Ledit procédé consiste à exposer une partie du conduit; appliquer un moyen de bobine présentant un enroulement primaire et un enroulement secondaire sur la partie exposée du conduit, de sorte que le conduit contribue à un couplage inductif entre l'enroulement primaire et l'enroulement secondaire; appliquer un courant d'excitation à l'enroulement primaire pour induire dans l'enroulement secondaire un signal indiquant une valeur d'induction du conduit; et déterminer le matériel à partir duquel le conduit est fabriqué, en fonction du signal induit dans l'enroulement secondaire.

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