Liutenko T. Improvement of the method and the technical means for the non-dismantling metrological verification of household gas meters

The dissertation is devoted to solving the scientifically applied task of improving the method and technical means for metrological verification of household gas meters in the study and control of their metrological characteristics at the place of operation. The analysis of methods and means of metrological verification of household gas meters is carried out. Results of experimental researches statistical regularities of error change of household meters at their operation are established on the basis of their processing. A new experimental and calculation method for determining the uncertainty of household meters over a limited range of controlled flow rates has been developed, which ensures the implementation of non-dismantling metrological verification of meters in the entire operating flow rates range. The influence of operational and constructive factors on the stability of metrological characteristics of household gas meters has been investigated. Mathematical modeling of physical processes in standard flow meters for the calibration of gas meters, which is related to the study of heat exchange processes in installations has been done. New conceptual technical solutions of standard installations for metrological verification of household gas meters at their place of operation with the possibility of using the working environment of air or natural gas have been developed. Natural gas verifications have been carried out for measuring the volume of various principles of action. The study of household meters is carried out on the basis of error theory and using the concept of uncertainty of measurements. Keywords: natural gas, household gas meter, operating flow rates, metrological verification, error, uncertainty, non-dismantling verification.