Set Up and Characterization of a System for the Generation of Reference Magnetic Fields From 1 to 100 kHz

This paper describes the design process, the specific features, and the characterization procedures of the Istituto Nazionale di Ricerca Metrologica (I.N.RI.M.) set up for the generation of reference magnetic fields in the frequency range from 1 to 100 kHz. Numerical techniques, validated by comparison with experimental data, make it possible to choose the best solutions for obtaining magnetic flux densities up to 100 muT at 1 kHz and 25 muT at 100 kHz with relative uncertainty from a few parts in 10
³
up to the percent