Method and device for the measurement of electric currents...

Details Method and device for the measurement of electric currents... Method and device for the measurement of electric currents...

G - Physics

01

R

G01R 19/00 (2006.01) G01R 15/24 (2006.01)

Patent

CA 2198255

The invention calls for two Faraday elements (3 and 4), connected in series by optical means (34), to be positioned round a conductor (2). The Faraday effect on linearly polarized light (L1) which has only passed through the first Faraday element (3) is taken as a measure of current in a first measurement range. The Faraday effect on linearly polarized light (L2) which has passed through both Faraday elements (3, 4) is taken as a measure of current in a second measurement range.

Deux éléments de Faraday (3 et 4) montés en série par l'intermédiaire d'éléments de raccordement (34) optiques, sont associés à un conducteur (2). La rotation par effet Faraday de la lumière de mesure (L1) polarisée linéairement qui est uniquement passée à travers le premier élément de Faraday (3) sert de valeur pour mesurer le courant dans une première plage de mesure. La rotation par effet Faraday de la lumière de mesure polarisée linéairement (L2) qui est passée à travers les deux éléments de Faraday (3, 4) sert de valeur pour mesurer un courant dans une seconde plage de mesure.

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