In this paper a measurements comparison between the National Institute of Metrological Research (INRIM), acting as pilot Laboratory, and nineteen Italian Secondary Calibration Laboratories in the field of low dc Electrical Resistance is presented and discussed. This comparison was carried out on commission by the Italian Accreditation Body of Calibration Laboratories ACCREDIA-DT. As traveling standards three Tinsley mod 3504C four terminal standard resistors to be calibrated in oil respectively at 5 A and 20 A (1 mX), 1 A and 5 A (10 mX), 0.1 A and 1 A (100 mX) were involved. The temperatures at the measurements thermal regimen allowed a correction at 23 C of the results. The comparison results, shown graphically and as distribution of the normalized errors, were satisfactory, except in the case of a Laboratory whose measurements were outside its accreditation field.
ANALYSIS OF A NATIONAL COMPARISON IN THE FIELD OF ELECTRICAL LOW DC RESISTANCE / Galliana, Flavio; Gasparotto, E.. - In: MEASUREMENT. - ISSN 0263-2241. - 52:(2014), pp. 64-70. [10.1016/j.measurement.2014.03.003]
ANALYSIS OF A NATIONAL COMPARISON IN THE FIELD OF ELECTRICAL LOW DC RESISTANCE
GALLIANA, FLAVIO;e. gasparotto
2014
Abstract
In this paper a measurements comparison between the National Institute of Metrological Research (INRIM), acting as pilot Laboratory, and nineteen Italian Secondary Calibration Laboratories in the field of low dc Electrical Resistance is presented and discussed. This comparison was carried out on commission by the Italian Accreditation Body of Calibration Laboratories ACCREDIA-DT. As traveling standards three Tinsley mod 3504C four terminal standard resistors to be calibrated in oil respectively at 5 A and 20 A (1 mX), 1 A and 5 A (10 mX), 0.1 A and 1 A (100 mX) were involved. The temperatures at the measurements thermal regimen allowed a correction at 23 C of the results. The comparison results, shown graphically and as distribution of the normalized errors, were satisfactory, except in the case of a Laboratory whose measurements were outside its accreditation field.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
