Practical Precision Electrical Impedance Measurement for the 21^st Century – EMPIR Project 17RPT04 VersICal

¹ National Standards Authority of Ireland (NSAI), 1 Swift Square, Santry, Dublin 9, Ireland
² Główny Urząd Miar (GUM), ul. Elektoralna 2, 00-139 Warszawa, Poland
³ Trescal A/S, Mads Clausens Vej 12, 8600 Silkeborg, Denmark
⁴ AS Metrosert (Metrosert), Teaduspargi 8, 12618 Tallinn, Estonia
⁵ Institutul National de Metrologie (INM), 042 122, Bucuresti, Sos. Vitan-Bârzesti, nr. 11, Romania
⁶ Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK), Ataturk Bulvari 221, 06100 Ankara, Turkey
⁷ Czech Metrology Institute (CMI), Okružní 31, 638 00 Brno, Czech Republic
⁸ University of Zielona Góra (UZG), ul. Licealna 9, 65-417 Zielona Góra, Poland
⁹ Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle Cacce 91, 10135 Torino, Italy
¹⁰ Politecnico di Torino (PoliTo), Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
¹¹ Instituto Português da Qualidad (IPQ), Rua António Gião 2, 2829-513 Caparica. Portugal

^* Corresponding Author: oliver.power@nsai.ie

Abstract

The core objective of EMPIR project 17RPT04 VersICaL is to improve the European measurement infrastructure for electrical impedance, with particular emphasis on the capabilities of developing NMIs and calibration centres. The project will seek to exploit the results of existing research on digital impedance bridges (DIBs) by designing, constructing and validating simple, affordable versions suitable to realise the impedance scale in the range 1 nF to 10 μF and 1 mH to 10 H with relative uncertainties in the range 10^-5 to 10^-6. The first results of the research project, including the bridge designs and details of a polyphase digitally synthesized multichannel source capable of providing voltage outputs of precise ratio and phase are presented.