Design and Development of a Low-Cost Optical Current Sensor
Zubia Zaballa, Joseba Andoni
Aldabaldetreku Etxeberria, Gotzon
Durana Apaolaza, Gaizka
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Sensors 13(10) : 13584-13595 (2013)
In this paper we demonstrate the design of a low-cost optical current sensor. The sensor principle is the Faraday rotation of a light beam through a magneto-optical material, SF2, when a magnetic field is present. The prototype has a high sensitivity and a high linearity for currents ranging from 0 up to 800 A. The error of the optical fibre sensor is smaller than 1% for electric currents over 175 A.