Performance of low frequency magnetometers to non-sinusoidal magnetic fields

This paper presents the second part of a research work dealing with the performance assessment of commercially available magnetometers. The aim of the article is to continue a comparative study of a magnetometer set, but now using non-sinusoidal signals. Nineteen magnetometers were tested using signals with two and more frequency components; some features of the meters were investigated: fft, rms value, peak value and wave capture functions.

► Performance for non-sinusoidal fields of commercially available magnetometers is presented. ► Drawbacks were found for FFT functions of meters. ► Reduced frequency and magnitude resolution were the main source of errors. ► Failure in detecting small-amplitude frequency components was also detected.