Back to Search
Start Over
Magnetic Calibration System With Interference Compensation.
- Source :
-
IEEE Transactions on Magnetics . Jan2019, Vol. 55 Issue 1, p1-4. 4p. - Publication Year :
- 2019
-
Abstract
- 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CALIBRATION
*MAGNETIC sensors
*MAGNETIZATION
*MAGNETOSTRICTION
*MAGNETIC fields
Subjects
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 55
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- 133690566
- Full Text :
- https://doi.org/10.1109/TMAG.2018.2874169