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Review of fluxgate sensors

1992; Elsevier BV; Volume: 33; Issue: 3 Linguagem: Inglês

10.1016/0924-4247(92)80159-z

1873-3069

Pavel Ripka,

Non-Destructive Testing Techniques

Since the 1930s, fluxgate sensors have been used for measuring d.c. magnetic fields up to 1 mT with a maximum resolution of 10 pT. In the sensor core the flux is gated by the excitation field. The preferable sensor geometry is a ring-core; both crystalline and amorphous ferromagnetic materials can be used for the core. Although a lot of fluxgate magnetometer types have appeared, the classical type with detection of the second harmonics by a phase-sensitive detector is the most popular. Fluxgate sensors are reliable and rugged and their applications range from space research to submarine detection.