Peculiarities of Application of Contact Methods for Measuring the Temperature of Technological Objects

2025;
: pp. 62 – 68
https://doi.org/10.23939/jeecs2025.01.062
Received: April 18, 2025
Revised: May 13, 2025
Accepted: May 20, 2025

V. Fedynets, I. Vasylkivskyi. (2025) Peculiarities of application of contact methods for measuring the temperature of technological objects. Energy Engineering and Control Systems, Vol. 11, No. 1, pp. 62 – 68. https://doi.org/10.23939/jeecs2025.01.062

1
Lviv Polytechnic National University
2
Lviv Polytechnic National University

Contact methods are usually used to measure the temperature of industrial technological objects. When using the contact method to create the necessary conditions for heat exchange, thermal transducer must be in direct contact with the object of study, the temperature of which must be measured. When measuring stationary temperatures, the readings must be taken after a certain time interval from the moment of contact of the thermal transducer with the object of study, when a state of thermal equilibrium is established between them. Measurement of non-stationary temperatures by contact methods is always associated with the occurrence of dynamic errors over time due to the thermal inertia of the thermal transducer. The complexity of the processes of interaction of thermal transducers with heat flows of different nature of the objects of study necessitates the construction of simplified models to obtain practical estimates of the measurement results. Therefore, the article proposes the principles of choosing a thermal transducer to reduce possible methodological errors and estimate the actual errors of measuring the temperature of the objects of study. The conditions that must be met when setting up and conducting experiments to obtain reliable temperature measurement results are given. The article contains reference and methodological materials on measuring the temperature of technological objects by contact methods.

  1. Lutsyk, Ya.T., Huk, O.P., Lakh, O.I., Stadnyk, B.I. (2006) Temperature measurement: theory and practice. – Lviv. Beskyd Bit Publishers. (in Ukrainian).
  2. Metrology. Resistance thermoconverters made of platinum, copper and nickel. General technical requirements and test methods: DSTU GOST 6651:2014. - K.: Ministry of Economic Development of Ukraine, 2015. - 26 p. (in Ukrainian).
  3. Thermoelectric temperature transducers. Part 1. Performance specification and tolerance of the electromotive force (EMF):  DSTU EN 60584-1:2016 (EN 60584-1:2013, Idt). – [Effective 2016–11–01]. – Kyiv: State Committee of Ukraine for Technical Regulation and Consumer Policy, 2016. – 90 p. – (National Standards of Ukraine). (in Ukrainian).
  4. Pistun Y., Vasylkivskyi I., Fedynets V., Krykh H., Matiko H. (2024) Automated system for measuring thermal conductivity of solid materials. Metrology and Measurement Systems. 31, iss. 1. 179–193. https://doi.org/10.1109/9.402235
  5. Fedynets V., Yusyk Ya., Vasylkivskyi I., Guk N. (2019) Primary converters for temperature measurement in metallurgy. Measuring Technology and Metrology. 80, No. 2. 41-48. (in Ukrainian). https://doi.org/10.23939/istcmtm2019.02.041
  6. O. Kochan, R. Kochan, V. Kochan and J. Su. (2017) Thermocouple with adjustable error. 9th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS), Bucharest, Romania, 684-689. https://doi.org/10.1109/IDAACS.2017.8095178
  7. Bulyandra O. F. (2006) Technical thermodynamics. K.: Technika. (in Ukrainian).
  8. Shinkaryk M.M., Kravets O.I. (2024) Basics of heat engineering. Ternopil:  individual entrepreneur Palyanitsa V.A. (in Ukrainian).
  9. Fedynets V., Vasylkivskyi I. (2024) Research of thermal inertia of thermotransducers for measuring the temperature of gas flows. Energy Engineering and Control Systems. Vol. 10, No. 2, pp. 96–101. https://doi.org/10.23939/jeecs2024.02.096
  10. Kucheruk V.Yu., Kukharchuk V.V. (2024) Fundamentals of metrology and electrical measurements/ - K: University book. (in Ukrainian).
  11. Podzharenko V.O., Kulakov P.I., Ignatenko O.G., Voytovych O.P. (2006) Fundamentals of metrology and measuring equipment. Vinnytsia: VNTU. (in Ukrainian).