As the calibration activity of modern electrical secondary laboratories operating in the five low-frequency quantities is carried out by means of high precision digital multimeters (DMMs), it is of fundamental importance their correct technical surveillance through suitable inter-laboratory comparisons (ILCs). The laboratory for calibration of multifunction electrical instruments of the National Institute of Metrology Research (INRIM-Lab) provides bilateral and multilateral ILCs involving high precision DMMs to check the measurement capabilities of electrical laboratories. In particular, this paper deals with the last multilateral ILC that INRIM-LAB provided and carried out as reference measurements provider to which took part twelve Italian accredited laboratories divided in two loops. The In the ILC was involved a high precision 8.5 digit high precision DMM to be verified in a grid of about forty measurement points. The 2 relative uncertainties of the INRIM-LAB calibrations ranged from 1.6106 to 1.5104 while those of the laboratories ranged from 2.0106 to 2.2103. The ILC had satisfactory results confirming the correctness of both the dissemination from INRIM and the accreditation process by the Italian accreditation body for calibration laboratories.

Report of a Multilateral Accurate Measurement Comparison on a High-Precision Multimeter to Evaluate the Traceability Transfer from INRIM in the Field of Low-Frequency Electrical Quantities / Galliana, Flavio; Lanzillotti, Marco. - In: MAPAN. JOURNAL OF METROLOGY SOCIETY OF INDIA. - ISSN 0970-3950. - 34:4(2019), pp. 473-478. [10.1007/s12647-019-00317-9]

Report of a Multilateral Accurate Measurement Comparison on a High-Precision Multimeter to Evaluate the Traceability Transfer from INRIM in the Field of Low-Frequency Electrical Quantities

Galliana, Flavio;Lanzillotti, Marco
2019

Abstract

As the calibration activity of modern electrical secondary laboratories operating in the five low-frequency quantities is carried out by means of high precision digital multimeters (DMMs), it is of fundamental importance their correct technical surveillance through suitable inter-laboratory comparisons (ILCs). The laboratory for calibration of multifunction electrical instruments of the National Institute of Metrology Research (INRIM-Lab) provides bilateral and multilateral ILCs involving high precision DMMs to check the measurement capabilities of electrical laboratories. In particular, this paper deals with the last multilateral ILC that INRIM-LAB provided and carried out as reference measurements provider to which took part twelve Italian accredited laboratories divided in two loops. The In the ILC was involved a high precision 8.5 digit high precision DMM to be verified in a grid of about forty measurement points. The 2 relative uncertainties of the INRIM-LAB calibrations ranged from 1.6106 to 1.5104 while those of the laboratories ranged from 2.0106 to 2.2103. The ILC had satisfactory results confirming the correctness of both the dissemination from INRIM and the accreditation process by the Italian accreditation body for calibration laboratories.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11696/61005
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