measurements

Gas flow temperature is an important parameter of the process, determines the quantitative and qualitative indicators of the original product, the presence of defects, the state of technological equipment, as well as the safety of the process. Therefore, its measurement must be carried out continuously, with high accuracy, low inertia and high reliability, since the information signal about the value of temperature is used in information-measuring systems and automatic control and regulation systems.

The  article proposes  an  approach  to  the  research of  the metrological  reliability  of measurements  taking  into account the conditions and operating modes of measuring equipment, based on the intermediate control of the standard deviation of  the measurement  results.  The  above  approach  is  relevant  because  it  allows  laboratories  to  reasonably  set  the  recalibration intervals  of  measuring  equipment  based  on  the  control  of  standard  deviations.  The  requirement  for  reasonable  setting  of recalibration intervals for measuring instruments is a common worldwide

In 2019, 100 years since the founding of the Department of Information and Measurement Technologies of the Lviv  Polytechnic  National  University,  there  is  an  urgent  need  to  look  back  in  the  historical  perspective  and  analyze  the contribution of certain historical figures to the development of engineering thought and the principles of metrology in the areas of Western Ukraine  and,  in particular,  in  the  territories of Galychyna.

The basic principles of systematization of measurement scales types are describes and analyses in this article. Properties types of the empirical objects and corresponding measurement scales are considered. According to VIM3 (“International vocabulary of metrology: Basic and general concepts and associated terms”), measurement scale (quantity-value scale) is an ordered set of quantity values of quantities of a given kind of quantity used in ranking, according to magnitude, quantities of that kind, for example, Celsius temperature scale, time scale, Rockwell C hardness scale etc.

It is based on the mixed probability model of the distribution accidental and gross errors. The system of tolerances mentioned above allows to design and to make measurements with the highest reliability.