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Levin S.


Books of this author



Articles of this author


Mathematical theory of measurement problems: applications. Once again about «reliability» in metrology

Issue: KIPiS 2019 #5

The latest issue of «Chief metrologist» magazine for 2018 contains rather interesting discussion concerning the use of «reliability» term in metrology. Although a wide range of regulatory documents keep this term can it be considered correct in its full meaning? Present article by professor Levin S. is dedicated to this matter and will inform you of more details upon this term use.

 
Mathematical theory of measurement problems: applications. New «Guide OIML G 19: The role of measurement uncertainty in conformity assessment in legal metrology»

Issue: KIPiS 2019 #4

Discussion concerning GUM Guide unexpectedly continued in 2016 with the promised philosophical arguments of article published in 2007 as an announcement of the Guide criticizing the «inaccuracy » of measurements when type approval testing, verification and measuring instrument calibration. According to the plan the Guide was supposed to comply with ISO/IEC 17025, but the risk assessment for the «instrument cluster in the sense of statistical analysis» is beyond the scope of application. And now it is not clear whether this is in compliance with ISO/IEC 17025- 2017 where risk assessment issues came to the fore including the risk of «statistical assumptions»...

 
Mathematical theory of measurement problems: applications. Calibration both space and terrestrial — the scale factor and measurement plan

Issue: KIPiS 2019 #3

Recently calibration measuring task attracts the increasing attention of metrologists, not only because in practice calibration is made in accordance with the methods of measuring instruments verification or it is limited by the protocol of their joint measurements with the standard use. There are some other circumstances existing. Thus, as an example, calibration laboratories force to calibrate measuring instruments according to the international guidelines that in fact do not guarantee the main purchase achievement of the Federal Law «On Ensuring the Uniformity of Measurement» which is to protect the rights and legal interests of citizens, organizations and the state from unreliable measurement results… Find more details in the article written by Professor S. Levin.

 
Mathematical theory of measurement problems: applications. The main measurement task of measuring instrument type approval testing

Issue: KIPiS 2018 #5

According to the Federal Law «On ensuring the uniformity of measurements » any measuring instrument type must be approved by means of control tests for further application in the state regulation field. Such tests should confirm the specified accuracy and the interval between verification processes. Verification methods should be also tested. For the type approval testing the identification of standardized metrological characteristics is considered the most important, and approbation is more often limited to checking the possibility of verification operations. But in fact the situation can be quite different. For more details read the present article written by Professor Levin S.F.

 
Mathematical theory of measurement problems: applications. Uncertainty conception — Theory of accuracy

Issue: KIPiS 2018 #4

Targets of measurement tasks form the definition of «uncertainty». At the moment the revision of Guide to the expression of uncertainty in measurement (GUM) keeps more broaden interpretation of this term but anyway the problems of uncertainty conception, model structure and definitional uncertainty, are still considered open and require more attentive investigation. Professor Levin S. shares his point of view upon this problem in his new article.

 

Current issue
#5 October 2019
KIPiS 2019 #5
Topic of the issue:
Modern instrumentation
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