Ensuring the validity of Zener calibration results based on historical calibration data

Authors

  • Regis Landim Inmetro
  • Helio R. Carvalho Inmetro
  • Renato S. Costa Inmetro

DOI:

https://doi.org/10.21014/actaimeko.v14i4.2004

Keywords:

calibration data, E_N-score, prediction techniques, Zener calibration

Abstract

This study introduces some techniques for ensuring the validity of Zener calibration results, which can be employed in other measurement analyses, based on the ISO/IEC 17025:2017 standard. We present and discuss several practical scenarios. Finally, we propose the use of a prediction technique to improve the calibration procedure, along with the error (normalised) |EN|-score as an acceptance criterion, which is the main contribution of this paper. This leads to a robust assurance of the validity of Zener calibration results. As a practical application of this proposal, we could verify two Zeners that have experienced power shortages; one of them had maintained its historical calibration data (|EN|  = 0.03), while the other had not (|EN| = 2.19).

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Published

2025-12-30

Issue

Vol. 14 No. 4 (2025)

Section

Research Papers

License

Copyright (c) 2025 Regis Landim, Helio R. Carvalho, Renato S. Costa

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