Accurate comparison between INRIM and a secondary calibration laboratory using a top-class multifunction electrical calibrator

Galliana, Flavio; Lanzillotti, M.

doi:10.1016/j.measurement.2017.02.052

Cited by 11 publications

(11 citation statements)

References 11 publications

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“…In U(mn −mref), the correlation due to the common uncertainty component both in Un and Uref due to the relevant national standard is evaluated according to [10]. It suggests that the correlation factor between mn and mref is the ratio between the square of the type B component of the uncertainty of the the national standard and the product of Un and Uref.…”

Section: Evaluation Of the Results And Typologies Of Ilcsmentioning

confidence: 99%

Measurement comparisons: A tool to guarantee the reliability of measurement systems and of high-tech industry

Galliana¹

2019

IEEE Instrum. Meas. Mag.

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Section: Evaluation Of the Results And Typologies Of Ilcsmentioning

confidence: 99%

Measurement comparisons: A tool to guarantee the reliability of measurement systems and of high-tech industry

Galliana¹

2019

IEEE Instrum. Meas. Mag.

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“…Where r(εL, εI) is the correlation coefficient between INRIM and laboratories errors. r was evaluated following the rules defined in [14].…”

Section: Evaluation Of the Resultsmentioning

confidence: 99%

“…It is also important to correctly calculate the correlation between the measurements of the NMI and of the participant secondary laboratories (accredited or not) as usually these send their reference standards to the same NMI for calibration. Suggestions for this evaluation are reported in [14]. Since 2016, INRIM acts as an ILC provider according to [16] because the Italian accreditation body ACCREDIA, signatory of the EA MLA [17], ceased to provide this service.…”

Section: Surveillance Of the Secondary Calibration Laboratoriesmentioning

confidence: 99%

The INRIM Role of Inter-laboratory Comparison Provider for Electrical Power and Energy at Industrial Frequency: A Two-Year Activity Report

Galliana

Serazio

2018

MAPAN

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The technical surveillance of secondary calibration laboratories accredited according to the ISO/IEC 17025 standard for electrical power and energy at industrial frequency is very important, as these measurements are the basis of the commercial relations between an electricity supplier and a user. An effective technical surveillance requires the execution of inter-laboratory comparisons (ILCs). With them, it is possible to verify the competence of the laboratories and the correctness of the dissemination process from the national standards of power and energy, usually maintained at national metrology institutes (NMI), to these laboratories. The paper deals with the ILCs that the National Institute of Metrological Research (INRIM) provided and carried out as reference measurements provider for Italian accredited laboratories for power and energy (active and reactive) at industrial frequency. The ILCs were carried out involving various instrument types and at different uncertainty levels. The 2σ relative uncertainties of the INRIM calibrations ranged from 1.0×10 −4 to 1.5×10 −3 . The ILCs 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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“…Normally, when in an ILC are involved an NMI and calibration Laboratories belonging to the same country, it is important to correctly evaluate the possible correlation between the measurements of the NMI and the secondary Laboratories as normally the Laboratories send their reference standards to the NMI for calibration. Suggestion for this evaluation can be found in [1,[5][6][7]10]. The ILC results are reported in Tables 1-3 Table 3.…”

Section: Analysis Of the Resultsmentioning

confidence: 99%

Inter-laboratory measurement comparison between INRIM and ESA on electrical quantities

Galliana

Capra

Cerri

et al. 2017

18th International Congress of Metrology

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Abstract. Inter-laboratory comparisons (ILCs) are an effective mean to establish the compatibility of the measurements among laboratories. As consequence they are a mean to assure confidence in the competence and in the correctness of the dissemination processes from national Standards in different countries. This paper refers on a ILC between the National Institute of Metrological Research (INRIM-Italy) and the European space research and technology Centre (ESA-ESTEC), belonging to two different countries, on DC Voltage, DC Resistance and Electrical Capacitance carried out in 2016. The comparison showed a satisfactory agreement between the results of the two Laboratories.

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Accurate comparison between INRIM and a secondary calibration laboratory using a top-class multifunction electrical calibrator

Cited by 11 publications

References 11 publications

Measurement comparisons: A tool to guarantee the reliability of measurement systems and of high-tech industry

Measurement comparisons: A tool to guarantee the reliability of measurement systems and of high-tech industry

The INRIM Role of Inter-laboratory Comparison Provider for Electrical Power and Energy at Industrial Frequency: A Two-Year Activity Report

Inter-laboratory measurement comparison between INRIM and ESA on electrical quantities

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