INFLUENCE OF BLACKBODY GEOMETRY AND MEASUREMENT DISTANCE AT RESULT OF THERMAL IMAGER CALIBRATION

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F19%3AN0000023" target="_blank" >RIV/00177016:_____/19:N0000023 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

INFLUENCE OF BLACKBODY GEOMETRY AND MEASUREMENT DISTANCE AT RESULT OF THERMAL IMAGER CALIBRATION

Original language description

Thermal imaging is the fastest growing sector of the world temperature sensing market. This technique is becoming even more widely used than single spot infrared radiation thermometers for fast and two-dimensional temperature measurement. A lot of types with big variety of their properties are available on the market. As a key condition for proper temperature measurement looks to perform measurement from right distance with an object with sufficient dimensions. Manufacturers provide information how the measurement spot should changes with a distance. Otherwise, no information about the change of temperature in dependency on the distance is provided. Aim of presented work was to investigate how the result of calibration may vary when different types of the blackbodies are used and when the measurement distance is changing. Eight different blackbodies were used for measurements including cylinder and spherical cavity and common flat plate blackbody. Presented case study was performed at least at 5 thermal imagers, with different optic specification, working in different wavelength range. Measurements were performed in temperature range (-10 to 1200) °C to see its influence on the behaviour of the thermal imagers. Presented work will describe methodology of the measurement and obtained results. Results of the work will help to understand size-of-source effect (SSE) at thermal imagers, increase knowledges about these instruments and adjust expectations about measurement uncertainty. Results serves as support material for lectures for secondary calibration laboratories and end users also. This should help deepen their knowledge in problematics dealing with thermal imaging measurements and calibrations. This project is funded by Institutional Subsidy for Long-Term Conceptual Development of a Research Organization granted to the Czech Metrology Institute by the Ministry of Industry and Trade

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20205 - Automation and control systems

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů