Kompetentnost' 6/157/2018

ISSN 1993-8780

METROLOGY 53

Methodology for Estimating the Uncertainty

of the Results of Working Standards Calibration

and SR Hardness

K.K. Savrovskiy, FBI Nizhny Novgorod Center for Standardization of Metrology, Nizhny Novgorod, Russia, mail@nncsm.ru

Dr. V.G. Kutyaykin, Director, FSAEI FVT ASMS Nizhny Novgorod Branch, Nizhny Novgorod, Russia, asms-nn@mail.ru

key words

area of accreditation, uncertainty indicators, expanded uncertainty, maximum allowable values

References

It is a question of the main provisions and the transfer of a hardness unit according to the Rockwell scale from the standards of units of quantities. The general provisions and the procedure for transferring a hardness unit according to the Rockwell scales from the standards of units of quantities are set forth. Practical examples of calculations of uncertainty of calibration results are given.

We have shown the possibility of correctly combining the description of accuracy indicators in the form of uncertainty and accuracy indicators established in the state verification schemes and/or descriptions of types of measuring instruments.

It is necessary to change the rules for building state verification schemes related to measuring instruments that can be used as working standards, we believe. At the same time, the need for a change in the rules for the construction of state verification schemes relating to measuring instruments that can be used as working standards has been identified.

We proposed to consider the discharge according to the state verification scheme as a metrological characteristic of the measuring instrument, and to normalize the measuring instrument with the error, and for the standard the confidence limits of the error. Accordingly, the reverse option is possible.

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