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Temperaturno ovrednotenje prototipa za umerjanje sevalnih termometrov
ID DOLENŠEK, VALERIJA (Author), ID Pušnik, Igor (Mentor) More about this mentor... This link opens in a new window

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Abstract
V magistrskem delu s pomočjo izračunane korekcije in merilne negotovosti ovrednotim prototip za umerjanje sevalnih termometrov. V prvem delu naloge opišem fizikalno ozadje, kjer predstavim osnovne zakonitosti sevalne termometrije. Pri tem ugotovim, da obstaja več dejavnikov, ki bodo v neidealnih razmerah merjenja doprinesli k merilnim pogreškom. V drugem delu magistrskega dela predstavim postavitev merilnega okolja, predstavim merilno opremo in njene karakteristike ter postopek izvajanja meritev. Sledi ocena virov sistematičnih pogreškov in merilnih negotovosti, ki so lastni merilnemu okolju. Ocenjene vire merilnih pogreškov analiziramo in ocenimo. Izračunamo korekcijo in skupno merilno negotovost za analizirani prototip za umerjanje sevalnih termometrov glede na temperaturo, pri kateri izvajamo meritve, in glede na odmik od središča plošče kalibratorja, pri katerem so izvedene meritve. Vrednosti skupne korekcije znašajo do 7 °C, razširjene skupne merilne negotovosti pa do 8 °C. Ugotavljam, da v splošnem kalibrator v trenutni fazi razvoja ni primeren za izvajanje kalibracij, razen v posebnih primerih.

Language:Slovenian
Keywords:ploščni IR kalibrator, sevalni termometer, sledljivost, kalibracija, merilna negotovost
Work type:Master's thesis/paper
Organization:FE - Faculty of Electrical Engineering
Year:2021
PID:20.500.12556/RUL-131487 This link opens in a new window
COBISS.SI-ID:78281731 This link opens in a new window
Publication date in RUL:28.09.2021
Views:725
Downloads:51
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Secondary language

Language:English
Title:Temperature evaluation of the prototype for calibration of radiation thermometers
Abstract:
In this master’s thesis, I calculated given correction and measurement uncertainty to evaluate the prototype for calibration of radiation thermometer. In the first part of the thesis, I describe the physical background, presenting the fundamental laws of radiation thermometry. In doing so, I find that several factors will contribute to measurement errors in non-ideal measurement conditions. In the second part of the master’s thesis, I present the layout of the measuring environment, the measuring equipment and its characteristics, and the procedure for performing measurements. An assessment of the sources of systematic errors and measurement uncertainties inherent in the measurement environment follows. We analyze and evaluate the estimated sources of measurement errors. Then we calculate the correction and total measurement uncertainty for the analyzed prototype for the calibration of radiation thermometers concerning the temperature at which we perform the measurements and concerning the deviation from the center of the calibrator plate at which we perform the measurements. Total correction values are up to 7 °C, extended total measurement uncertainties up to 8 °C. I note that, in general, the calibrator is not suitable for performing calibrations at the current stage of development, except in special cases.

Keywords:flat plate IR calibrator, radiation thermometer, traceability, calibration, measurement uncertainty

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