On the accuracy of flux-gate magnetometers -Calibration Experiment-
Koike, K., Nakajima, S. & Shimizu, Y.
Abstract
We examined the efficiency of the flux-gate magnetometers, MB-160 and MB-162, Shimadzu, which we use for variation observation at the Kakioka Magnetic Observatory. We also examined our method and the equipment for the calibration of the installed calibration apparatus in the flux-gate magnetometer.
On the basis of examinations, we obtained the following conclusions:
1.Using our equipment for the calibration at Kakioka, which is composed of mainly one set of 3-axial Helmholtz coil, we can calibrate the installed calibration apparatus within an accuracy of 0.1%.
2.When we use the flux-gate magnetometer with the resolution of 0.1 nT, we can extend the range of the observation from ±500 nT to ±600 nT with a sufficient linearity.
3.The output signal for the calibration which is generated by the installed apparatus in the flux-gate magnetometer is stable. With the use of this installed apparatus, therefore, we are able to calibrate the scale value during the observation.
Translated to English from paper in Japanese, originally published in: Memoirs of the Kakioka Magnetic Observatory, Vol.24, No.1, pp.1-13, 1990 with permission of the authers.
