Final Report on GULFMET Supplementary Comparison of Inductance at 10 mH and 100 mH at 1 kHz (GULFMET.EM-S4)

Velychko, Oleh; Shevkun, Sergii; Bartholomew, J G; Alrobaish, Abdullah M

doi:10.1088/0026-1394/56/1a/01013

Cited by 6 publications

(5 citation statements)

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“…In the COMET.EM-S13 [24] and GULFMET. EM-S4 [25] regional comparisons of national inductance standards of 10 and 100 mH, the pilot laboratory was the SE "Ukrmetrteststandard". The pilot laboratory selected traveling standards.…”

Section: The Results Of the Research On The Longterm Instability Of T...mentioning

confidence: 99%

Research of Long-Term Drift of the National Inductance Standard

Velychko,

Dombrovskyi

2023

MEM

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Inductance measurements is important for all branches of technology related to the application of electricity: energy and electronics, radio and television, transport and communication, and scientific research. Electromechanical devices and electronic components can be characterized using impedance measurements to identify the parameters of their equivalent electrical model. New inductance measurement methods are being developed in specific fields of activity. Manufacturers of standards and measuring instruments of inductance develop special handbooks outlining various methods of inductance measurement. The State Primary Standard of Ukraine for inductance and loss angle tangent reproduces and transmits a unit of inductance in the range from 1∙10-6 H to 10 H at a frequency of 1 kHz. It is keeping in the SE “Ukrmetrteststandard” and participated in several comparisons of national standards within the framework of the activities of regional metrological organizations. The calibration and measurement capabilities of inductance measurement of national laboratories of different countries were studied to analyze and compare the capabilities of the national standard with the standards of other countries. Long-term instability studies of inductance measures of 1 mH, 10 mH and 100 mH, which are part of the national standard unit of inductance, have been conducted. The research period covered from 2009 to 2022. It was established that the drift lines of the specified inductance measures can be described using linear approximations. The rationale for choosing inductance measures of 10 mH and 100 mH for their use as transmission standards in the calibration of standards, which were organized and conducted by SE “Ukrmetrteststandard” as their pilot laboratory, is given.

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Section: The Results Of the Research On The Longterm Instability Of T...mentioning

confidence: 99%

Research of Long-Term Drift of the National Inductance Standard

Velychko,

Dombrovskyi

2023

MEM

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“…Results of GULFMET.EM-S4 (3 participants) [18] SC can be linked in terms of RV S14 (100 mH, 1 kHz). Results of those comparisons are expressed to COOMET.EM-S14 (4 participants) SC [16].…”

Section: Linking Results Of Coomet and Gulfmet Supplementary Comparisons For Inductancementioning

confidence: 99%

“…The GULFMET.EM-S4 [18] SC for inductance 10 and 100 mH at 1 kHz was carried out in the CIPM-MRA framework from June to October 2018. The SC was carried out between 3 NMIs which are the members of two RMOs: COOMET and GULFMET.…”

Section: Participants Of Supplementary Comparison Of Inductancementioning

confidence: 99%

Main Results of GULFMET.EM-S4 Supplementary Comparison of Inductance for 10 and 100 mH at 1 kHz

Velychko¹,

Shevkun²,

Gordiyenko

2019

Ukrainian Metrological Journal

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Main Results of GULFMET.EM-S4 Supplementary Comparison of Inductance for 10 and 100 mH at 1 kHz The Consultative Committee for Electricity and Magnetism (CCEM) of CIPM was a sponsor of international comparisons of the national measurement standards of electromagnetic quantities between laboratories of different NMIs in the CIPM-MRA framework. From 1989 to 1999 for inductance of 10 mH at 1 kHz was carried out. 11 NMIs that are the members of four RMOs: EURAMET, APMP, COOMET and SIM, participated in this KC. The PTB was the pilot laboratory of this KC.

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“…The coefficient of determination R 2 is used to assess the accuracy of such a drift model. In known key and supplementary comparisons of electrical measurement standards, linear regression has been used to describe the line drift of travelling measurement standards [14][15][16][17][18][19].…”

Section: Estimation Of the Drift Of The Inductance Measurement Standa...mentioning

confidence: 99%

“…Ukrainian national measurement standards of the inductance unit were established at the SE "Ukrmetrteststandard" (Kyiv, Ukraine) in 2009 and used for precision calibrations of working inductance measurement standards. Those standards took part in comparisons of national measurement standards within the framework of regional metrology organizations from 2012 to 2019 [14,18,19]. The high stability of these measurement standards over a rather long time period is shown by continuous measurements.…”

Section: Estimation Of the Drift Of The Inductance Measurement Standa...mentioning

confidence: 99%

The estimation of the long-term drift of the inductance measurement standards

Velychko,

Gordiyenko

2024

УМЖ

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Inductance measurements are important in many fields, especially in electronics, electrical engineering, radio engineering, and other areas. The inductance is often an important parameter in a wide range of applications such as radio transmitters, power circuits, magnetic resonance pulsed sources, etc. The accuracy of the inductance affects the quality of products, especially in devices where inductors are used, such as filters, transformers, inverters, etc. High-precision inductance measurements are used for the product quality control to ensure that manufactured devices meet established specifications and standards. Drift is an undesirable property of all measuring instruments and measurement standards during their life cycle. The analysis of the instrumental drift of measurement standards is of great importance in metrology. Reliable drift accounting plays an important role in maintaining measurement accuracy. For electrical measurement standards, the long-term drift is predictable. The drift types and main methods of its estimation for measurement standards between their calibrations were analysed. The drift uncertainty can be evaluated from the history of successive calibrations, and in the absence of such history, the order of magnitude of the calibration uncertainty can be estimated. The results of the estimation of the long-term drift of the inductance measurement standards for high-precision calibration of measuring instruments and measurement standards by two methods, polynomial regression curves and Exponentially Weighted Moving Average (EWMA) schemes, are given. The EWMA schemes reduce the lag inherent in traditional moving averages by giving more weight to recent observations. It is shown that the use of the EWMA schemes compared to the regression analysis shows greater sensitivity to the drift changes in the last years of observations. This allows the laboratory to take this factor into account when calibrating measuring instruments and measurement standards.

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Final Report on GULFMET Supplementary Comparison of Inductance at 10 mH and 100 mH at 1 kHz (GULFMET.EM-S4)

Cited by 6 publications

References 0 publications

Research of Long-Term Drift of the National Inductance Standard

Research of Long-Term Drift of the National Inductance Standard

Main Results of GULFMET.EM-S4 Supplementary Comparison of Inductance for 10 and 100 mH at 1 kHz

The estimation of the long-term drift of the inductance measurement standards

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