Internet calibration for electrical metrology: first application at IEN

The paper deals with the use of Internet in the dissemination process of low-frequency electrical quantities to secondary calibration laboratories; feasibility studies on Internet calibration, performed at the Istituto Elletrotecnico Nazionale Galileo Ferraris (IEN), are presented. In particular, the experiments concern the automatic calibration of multifunction calibrators, by means of a traveling standard system (composed of a multifunction transfer standard and a laptop computer) using the Internet facilities with commercial or freeware software. The adopted solution doesn´t require to the calibration laboratory any acquisition of hardware tools or the installation of dedicated software. The role of the secondary laboratory operator is limited to the realization of electrical connections before and during the calibration process.