The Influence of Ferromagnetic core, Pick-up Coil Winding Number and Environmental Temperature to the Output Signal of a Fluxgate Magnetic Sensor

Yulkifli Yulkifli (1) Electronic and Instrumentation Research Division Faculty of Mathematics and Natural Sciences Universitas Negeri Padang. 2) Theoretical High Energy Physics and Instrumentation Research Division, Institut Teknologi Bandung)
Rahmondia N. S (Theoretical High Energy Physics and Instrumentation Research Division, Institut Teknologi Bandung)
Mitra Djamal (Theoretical High Energy Physics and Instrumentation Research Division, Institut Teknologi Bandung)
Khairurrijal Khairurrijal (Physics of Electronics Materials Research Division, Institut Teknologi Bandung)
Deddy Kurniadi (Instrumentation and Control Research Division, Institut Teknologi Bandung)

Indonesian Journal of Physics (IJP)
Vol 18 No 3 (2007): Vol. 18 No. 3 July 2007

The paper explains some influence parameters of a fluxgate magnetic sensor e.g. number of ferromagnetic cores, number of pick-up coil winding and temperature. The sensors were built in three configurations of pick-up coil winding: 50x2, 60x2, and 70x2 turns, where the excitation coil was kept unchanged at 40x2 turns. The influence of ferromagnetic core and temperature were tested by using the configuration of 60x2 turns. The measurement results show that the increasing of core layer increases the measurement range: ± 100 µT (2 layers), ± 150 µT (6 layers) and ± 200 µT (10 layers). The increasing of pick-up coil winding number increases the sensor sensitivity: 260.64 mV/µT (40/50/40), 321.39 mV/µT (40/60/40) and 383.43 mV/µT (40/70/40). The increasing of temperature shifted the output signal to the higher position