Active standard | Published: 28/07/2026

ISO 27893:2026-ed.2.0

Vacuum technology — Vacuum gauges — Evaluation of the uncertainties of results of calibrations by direct comparison with a reference gauge
(Technique du vide — Manometres a vide — Évaluation de l´incertitude des résultats des étalonnages par comparaison directe avec un manometre de référence)

Available languages: English

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Detail information

Designation: ISO 27893:2026-ed.2.0

Publication date: 28/07/2026

Pages: 17

Country: International technical standard

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Anotation

Description / Abstract: This document specifies a method for the determination and reporting of measurement uncertainties arising during vacuum gauge calibration by direct comparison with a reference gauge carried out in accordance with ISO 3567. This document specifies methods for uniform reporting of uncertainties in vacuum gauge certificates. Uncertainties reported in accordance with the guidelines given in this document are transferable in the sense that the uncertainty evaluated for one result can be used as a component in the uncertainty evaluation of another measurement or calibration in which the first result is used. This document specifies two measurement models that are sufficient to cover most practical cases. However, it is possible that the models given cannot be applied to newly developed vacuum gauges. The final uncertainty to be reported in a certificate is evaluated from the uncertainties of the input quantities and influence quantities. The principal quantities that can affect the result of a vacuum calibration are described; however, a complete list of the possible quantities that can have an influence on the final result lies outside the scope of this document.

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