Patent ID: 7123005
Filing Date: 2006-10-17
Classification: G01R

Abstract:
1. Magnetometer comprising a magnetic core, at least one active coil ( 4 , 5 ) and a receiver coil ( 10 ), the active coil being arranged so as to create a magnetic excitation field in the core, the receiver coil having two windings ( 11 , 12 ), means for passing an alternating current at an excitation frequency in the active coil and means ( 14 ) for measuring a voltage induced in the receiver coil, wherein the measurement means comprise a detector ( 27 ) for measuring, in the induced voltage, a synchronous component having the excitation frequency, a circuit with two loops ( 21 , 22 ) each of which comprises a winding of the receiver coil, an adder ( 25 ) for adding values of partial voltages respectively generated at terminals of them loops, thus obtaining the induced voltage and a device for correction ( 28 ) of one of the said partial voltages, controlled by the detector.