VECTOR DC MAGNETOMETERS CALIBRATION ERROR

V. Korepanov, F. Dudkin, K. Pajunpää

Abstract

The calibration system for vector DC magnetometers of Nurmijarvi Geophysical Observatory (Finland) is described. It is based on a three axes reference coil system and Observatory reference magnetometer. It is shown experimentally that the system allows to determine calibrated magnetometer parameters with an error about 0.02%. One important error source -influence of noncollinearity of reference and calibrated magnetometer axes - is analyzed and value of this error is estimated. Also additional possibilities of the Observatory infrastructure are described: determination of temperature errors of magnetometer’s sensor and electronics and long-term temporal drift study of up to 9 magnetometers simultaneously.

Keywords

magnetometer, calibration, axes collinearity, error

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IMEKO-WC-2000-TC4-P137.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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