The intensive discussion of the possible impact of atmospheric electricity in theInternational Journal of Biometeorology has motivated many physicians and scientists to include the respective measurements along with the assessment of the traditional parameters. The parameters most often required are: air ions, air-to-ground currents and the electrical earth potential. This paper is primarily concerned with a new generation of instruments to study such electrometeorological parameters, particularly air ionization. This paper describes the key data and functions of the Ion-Meter PN-2001 the first result of a mid-term development plan; the Meteoline uP-2000. The latter is a group of five new instruments for the study of electro-atmospheric parameters.