http://dspace.nbuv.gov.ua:80/handle/123456789/62040 2026-04-05T22:32:56Z http://dspace.nbuv.gov.ua:80/handle/123456789/62078 Інформація для передплатників 2012-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/62077 Пассивное согласование в измерительных цепях термоэлектрических датчиков Луценко, В.Ю.; Жагров, А.С.; Оселедчик, Ю.С. The analysis of electromagnetic processes of transformation of a low-power signal termo-EdS the thermocouples, occurring in the switching converter and the raising transformer is made. Expression for function of a gain which allows to estimate expediency of application of the switching converter or the raising transformer depending on resistance of the gauge is received, and also to define necessary for achievement of the maximum sensitivity of the measuring scheme value of factor of transformation. 2012-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/62076 Импедансная модель прецизионных платиновых термометров сопротивления в области высоких температур Михаль, А.А.; Мелещук, Д.В. Double-pole multiunit impedance model of sensitive thermometer element during measurement on alternating current is proposed. It takes into consideration impact on resistance of sensitive element of bypassing effect which is caused by essential lowing of specific resistance of framework isolation elements with temperature growth. As a result, during the measurement of thermometer resistance on direct and alternating current the error appears which is the function of measurable temperature and current frequency. Theoretical investigations of frequency error of thermometers in the range of temperatures from 0 to 1100 °C are conducted. Difference in the results of measurement of resistance of major types of thermometers is established which leads to the error of 0,1-0,2 mK. Model analysis demonstrates the necessity for introduction of individual frequency correction to the measurement result like correction for zero power of dispersion. 2012-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/62075 Математична модель датчика проковзування з реєстрацією поперечних складових магнітного поля чутливого елемента Запорожець, Ю.М.; Кондратенко, Ю.П.; Шишкін, О.С. New modification of slip displacement gage is offered based on measurement of the transverse constituents of magnetic field of permanent magnet applied in magnetosensitive system of the slip signal recording. Due to model of the magnet with the permanent value of magnetization analytical formulas are got for transversal constituents of its magnetic field in any point of space. Character of spatial distribution of magnetic field transversal constituents is analyzed depending on the parameters of sensing element construction and brought out the availability of such ratio ranges of these parameters, which assure linearity of the slip sensor static characteristics. The graphs of the spatial distribution of the transverse magnetic field components and examples of calculation of slip sensor static characteristic are brought. 2012-01-01T00:00:00Z