• DOI:10.1109/TMAG.2018.2874169
• Corpus ID: 56599015

Magnetic Calibration System With Interference Compensation

@article{Janoek2019MagneticCS,
  title={Magnetic Calibration System With Interference Compensation},
  author={Michal Jano{\vs}ek and Michael Dressler and Vojtěch Petrucha and Andrey Chirtsov},
  journal={IEEE Transactions on Magnetics},
  year={2019},
  volume={55},
  pages={1-4}
}

• M. Janošek, M. Dressler, +1 author A. Chirtsov
• Published 1 January 2019
• Physics
• IEEE Transactions on Magnetics

This paper describes a novel method for calibrating dc-precise magnetometers in the low field range ( $\pm 100~\mu \text{T}$ ), which gives acceptable results even in laboratory conditions with significant magnetic interference. By introducing a closely mounted reference magnetometer and a specific calibration procedure, it is possible to compensate for the external magnetic field disturbances caused, e.g., by the local transportation operated with dc power supplies. The field compensation occurs only shortly after the calibrating coils are energized. In this case, the leakage of the coil’s magnetic flux to the reference sensor due to the cancelation of the time-varying compensating field was negligible. When using 60 cm coils and reference sensor in 2.5 m distance, we were able to calculate magnetometer gains with a standard deviation of 91 ppm. We show that an overall uncertainty of 0.1% can be achieved.