Mathematical theory of measurement problems: applications. Calibration of measuring instrument — three decisions of the one measuring problemAuthor(s): Levin S.
Issue: KIPiS 2018 #1
Practicing metrologists often do not have enough examples of the reference documents use to solve their measurement tasks. One of such tasks is the calibration of measuring devices. The difficulty is caused by National State Standard 8.820–2013 which equaled different accuracy standards like uncertainty of measurement, precision and inaccuracy. In practice the same measuring methods may bring to various calibration results. In the present article professor Levin S. suggests three different solutions for one measurement task.
Mathematical theory of measurement problems: applications. Calibration or verification? «Problems» of inaccuracy to uncertainty calculationAuthor(s): Levin S.
Issue: KIPiS 2017 #6
This year on April 19 there came Government resolution ¹737 «Concerning the confirmation of the Strategy to assure the measurement uniformity in Russian Federation up to 2025». As a result Federal Service for Accreditation set the requirement for the calibration laboratories to express the measurement capabilities through «uncertainty» when forming the accreditation scopes. The present article describes the influence it may cause to the measurement results and the possible problems that may appear when calculating the inaccuracy to uncertainty…
Mathematical theory of measurement problems: applications. Metrology: definitions and terms, phraseological units and catachresesAuthor(s): Levin S.
Issue: KIPiS 2017 #1, KIPiS 2017 #2
Nothing characterizes the science more than its terminology. And at the same nothing causes so many discussions like terms and definitions. In fact incorrect definitions in the metrology lead to the incorrect determination of the measurement task sometimes resulting in the wrong and nonsense method choice to solve this task. More details concerning this problem you will find within the present article written by Professor S. Levin.
Mathematical theory of measurement problems: applications. Measurement task to check the compliance of measuring instruments to the specified requirementsAuthor(s): Levin S.
Issue: KIPiS 2016 #6
Test procedures of measuring instruments consider the meeting of a set of conditions and terms as well as the parameters selection. Read the present article to know about the particular problems that can be faced while checking the measuring instrument compliance, how to solve this measurement task and also how to ensure the correctness of the test results.
12th Moscow International Innovative Forum «Precision Measurements — The Basis of Quality and Safety»Author(s): Afonskaya, Tatiana , Borovskaya M.
Issue: KIPiS 2016 #3
As usual May is marked with the outstanding event in the metrology world — 12th Moscow International Innovative Forum «Precision Measurements — The Basis of Quality and Safety» which was held on May 17-19. Within the Forum all of the visitors had a chance to attend 5 (!) exhibitions in one pavilion and also The First all-Russian Congress of Metrologists and Instrument Engineers. Find more details and learn what the leading specialists consider the crucial to solve the most important metrology questions.
Mathematical theory of measurement problems: applications. Postulates and conceptions or mathematics in metrologyAuthor(s): Levin S.
Issue: KIPiS 2016 #3
At the moment there are lots of discussions and disagreements resulting from the measurement uncertainty and terms connected herewith. There is opinion that Guide to the Expression of Uncertainty in Measurement (GUM) contains rather contradictory assertions that may bring much confusion. Read the present article to find more details about the measurement uncertainty issue and the related questions.
Measurements in a dynamic world (message from Stephen Patoray, Director of the BIML to World Metrology Day 2016)Issue: KIPiS 2016 #3
Message from Stephen Patoray, Director of the BIML to World Metrology Day 2016
Measurements in a dynamic world (message from Martin Milton, Director of the BIPM to World Metrology Day 2016)Issue: KIPiS 2016 #3
When we reflect on the rapid pace of change in the 21st century, we may say that «the only thing that is constant is change itself». The needs for metrology, and how these needs are met, are no exceptions; it is a challenge to bring the benefits of a stable and accurate measurement system to a dynamic world. We all need dynamic people in dynamic organisations to address the challenges of measurement in a dynamic world.
11th Moscow international innovative forum «Precision measurements — the basis of quality and safety»Issue: KIPiS 2015 #3
Issue: KIPiS 2014 #3, KIPiS 2014 #4
In this article you will find very interesting facts about the beginning of space research as well as about those who were the originators in this sphere.
Issue: KIPiS 2013 #3, KIPiS 2013 #4
«The catastrophical phenomenon of 1985-1986» was unprecedented because of numerous waivers from the use of aviation, space, missile, nuclear power and other types of complex equipment which operation requires measuring control systems based on computers with special software installed. According to the research one of the reasons for such catastrophical phenomenon was errors of measurement, static evaluation as well as the mathematical models of the objects implemented with the calculation programs. Find more details in the article written by D.Eng., Professor Levin S.F.
KIPiS 2012 #3
May 20, the anniversary of the signing of the Metre Convention in 1875, is the day on which the world metrology community celebrates World Metrology Day. As Directors of the two world metrology Organizations (the BIPM and the BIML), our aim in marking the anniversary is to join together and work with you to raise awareness of the important, if often unnoticed, role that metrology plays in all of our lives.
Issue: KIPiS 2012 #2
The present article is devoted to the history of Russian metrology starting from the times of the first regulations by Prince Vladimir to the foundation of All- Russia D.I. Mendeleyev Scientific and Research Institute for Metrology (VNIIM). You will get to know about the place and time when the first specialized metrological institute in the world was founded, how the metric system was introduced in Russia and who made a valuable contribution to the development of metrology.
Issue: KIPiS 2012 #1
Usually measurement methodology is associated with State System for Ensuring Uniform Measurement, which in very details describes what is measured and which methods and steps should be taken to get the exact results. But it’s quite wrong to suppose that such methodology has recently appeared. Generally speaking, it throws back to ancientry when people had their own ways to measure things. The present interesting and detailed article includes examples of measurement methodologies of the centuries B.C. up to nowadays.
Issue: KIPiS 2011 #6
What put the beginning of the development of such exact sciences like mathematics, geometry, astronomy, chemistry etc.? And why are they so connected with metrology? All exact sciences are based on different concepts and suppositions that were put forward centuries ago and after that taken as so-called standards, the basis. Considering the definition of metrology term - it is a science about measurements compared to standards. May this be evidence of the connection between metrology and such sciences? The author of this article shares various facts which can prove such connection.
Issue: KIPiS 2011 #5, KIPiS 2011 #6
The Catastrophic Phenomenon of 1985-1986. The time when in different countries simultaneously mass failures of aviation, aerospace, nuclear and other complex equipment occurred. Catastrophes happened before, but just then at the minimum of solar activity were set tragic records of man-made disasters, and the reaction of the international community to them was proportional to the number of measuring instruments in cars, airplanes, spacecraft, and nuclear power plants. The article tells about the circumstances of these events and their background.
Issue: KIPiS 2011 #5
The expression «cut the Gordian knot» means to find a non-trivial, bold and simple solution to a complex, confusing issue. It is unlikely that someone could say how many Gordian knots arose in practical metrology, especially in the development of national standards of units and scales of measurement. Each «know-how» — proposed and implemented – is another Gordian knot untied. The author tells about these «knots» in this article.
Issue: KIPiS 2011 #4
It would seem that metrologists and instrument manufacturers are not supposed to cheat. Because of the kind of their work. Serious and no jokes. But what actually happens? There are different versions of "tricks" and most common are associated with measurement error definition.
Issue: KIPiS 2011 #3
As there are two similar words for term «verification» in Russian they are often confused in meaning. One of them «poverka» stands for determination of measurement error value of measuring instruments to verify their compliance with the metrological standards. The other one simply means «checking» — it is just sort of a control operation which aims to verify the availability, working condition, serviceability, etc. The article tells about the history of the term «poverka» and related concepts in Russia.
KIPiS 2011 #3
Traditional Message from Stephen Patoray, Director of the BIML, dedicated to the World Metrology Day (WMD) 2011. Stephen gives his thoughts on the WMD theme of this year «Chemical measurements for our life, our future».
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