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Pyrometry method with mobile heat-resistant screens
https://doi.org/10.32446/0368-1025it.2021-10-41-45
Abstract
Possibilities of increasing the accuracy of non-contact temperature measurements are investigated. A method of surface pyrometry is proposed, in which the errors caused by the background radiation of third-party emitters are reduced with the help of reflecting screens. Temperature measurements are carried out with a serial narrow-angle pyrometer, sighted at the surface through a hole in the cavity of the screen made of fibrous heat-resistant material. The results of a series of experiments substantiating the content and parameters of the operations of the measurement method are presented. In particular, a decrease in the actual temperature of the measured surface by approximately 20–25 °C was noted when uncooled screens were introduced into the chamber of the thermal unit before each measurement. Qualitative results of measuring the surface temperature were obtained under conditions when the screens remained in the working space of the furnace between measurements, and the temperature leveling of holding the screens in positions on the surface before and during the measurement was carried out for 1–2 minutes. The results of industrial tests of the measurement method are described. The measurement method can be used for technological measurements directly on high-temperature units or for periodic testing and determination of corrections to the readings of stationary pyrometers.
About the Author
M. A. Denisov
Ural Federal University
Russian Federation
Russian Federation
Mikhail A. Denisov
Yekaterinburg
References
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Review
For citations:
Denisov M.A. Pyrometry method with mobile heat-resistant screens. Izmeritel`naya Tekhnika. 2021;(10):41-45. (In Russ.) https://doi.org/10.32446/0368-1025it.2021-10-41-45
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