10.14489/td.2017.06.pp.042-049

2017, 06 June

DOI: 10.14489/td.2017.06.pp.042-049

Golobokov M. V., Danilevich S. B.
DETERMINATION OF THE VALUE OF SIGHT AND SIZE SOURCE EFFECT FOR CALIBRATION OF INFRARED THERMOMETERS AND THERMAL IMAGERS
(pp. 42-49)

Abstract. The paper gives the analysis of need and sufficiency of requirements of techniques of checking the infrared thermometers and thermal imagers regulating measure definition of sighting and intrinsic error. Recommendations for improving the effectiveness of calibration of measuring instruments are proposed. The requirements of methods of infrared thermometers verification in terms of determining the indicator of sight are analyzed. The necessity to make calculations by determination of the sighting of energy values is proved. The influence of temperature of blackbody model on the accuracy of the calibration results are analyzed. The values of the absolute blackbody temperature are given for these infrared thermometers models under consideration, which are likely to calculate in terms of temperature. The ambiguity of requirements of verification methods in terms of working distance and aperture of used blackbody models are analyzed by the example of infrared thermometers and thermal imagers. The influence of the source size effect on the measurement result and as a result on the reliability of the verification results is shown. The problems of comparability of measurement results obtained with use of models blackbody in the form of emitting surface and a heat pipe are considered. The necessity of taking into account the distance and aperture of used blackbody model at normalized conditions are justified.

Keywords: infrared thermometer, thermal imager, sighting index, effect of the size of a source.

+ - About the Authors Click to collapse

M. V. Golobokov (FSAEI DPO «Novosibirsk Branch of the Academy of Standardization, Metrology, and Certification (Training)», Novosibirsk, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
S. B. Danilevich (State Regional Center of Standartization, Metrology and Testing in the Novosibirsk Region, Novosibirsk, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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