Non-contact multiband method for emissivity measurement

Mazikowski, Adam; Chrzanowski, Krzysztof

doi:10.1016/s1350-4495(02)00182-2

Cited by 43 publications

(21 citation statements)

References 14 publications

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“…Considering the dynamic range and the minimum sensibility of the sensor, the detected, non-distortion and differentiated measurement range restricted by eqs. (11), (12) and (15) is shown Figure 2. The x-axis represents the temperature, and the y-axis represents the emissivity parameter.…”

Section: The Prediction Analysesmentioning

confidence: 98%

“…In the study of radiation pyrometry theories and technologies, the complexity and uncertainty of actual object spectrum emissivity and the calibration problem caused by the temperature field measurement are always the key obstacles for accurate temperature measurement. Thus many radiation pyrometry methods and technologies arose [2][3][4][5][6][7][8][9][10][11][12][13] . However, our preliminary study put forward the primary spectrum pyrometry [14][15][16] based on the waveband measurement, the emissivity model in the narrow waveband and the normalization processing, and realized the true temperature field measurement without the calibrations of emissivity and spatial geometry.…”

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confidence: 99%

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The application analyses for primary spectrum pyrometer

Cheng

Zhong

2007

Sci. China Ser. G-Phys. Mech. Astron.

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In the applications of primary spectrum pyrometry, based on the dynamic range and the minimum sensibility of the sensor, the application issues, such as the measurement range and the measurement partition, were investigated through theoretical analyses. For a developed primary spectrum pyrometer, the theoretical predictions of measurement range and the distributions of measurement partition were presented through numerical simulations. And the measurement experiments of high-temperature blackbody and standard temperature lamp were processed to further verify the above theoretical analyses and numerical results. Therefore the research in the paper provides the helpful supports for the applications of primary spectrum pyrometer and other radiation pyrometers.primary spectrum pyrometry, radiation temperature measurement, temperature, emissivity, measurement range, measurement partition The principle of primary spectrum pyrometryPlanck Law is the fundamental of radiation temperature measurements, which indicates the quantitative relationship between the radiation intensity and the temperature of ideal blackbody [1] . In the study of radiation pyrometry theories and technologies, the complexity and uncertainty of actual object spectrum emissivity and the calibration problem caused by the temperature field measurement are always the key obstacles for accurate temperature measurement. Thus many radiation pyrometry methods and technologies arose [2][3][4][5][6][7][8][9][10][11][12][13] . However, our preliminary study put forward the primary spectrum pyrometry [14][15][16] based on the waveband measurement, the emissivity model in the narrow waveband and the normalization processing, and realized the true temperature field measurement without the calibrations of emissivity and spatial geometry. In applications, primary spectrum pyrometry is only applicable for those objects with continuous radiation features and the

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Section: The Prediction Analysesmentioning

confidence: 98%

mentioning

confidence: 99%

The application analyses for primary spectrum pyrometer

Cheng

Zhong

2007

Sci. China Ser. G-Phys. Mech. Astron.

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“…Unlike the direct and indirect http://dx.doi.org/10.1016/j.ijheatmasstransfer.2015.07.064 0017-9310/Ó 2015 Elsevier Ltd. All rights reserved. measurement methods that are based on the emissivity definitions, the multi-wavelength method has been developed by some research groups [25][26][27][28][29][30][31][32][33] to simultaneously measure the sample temperature and the emissivity using an optimization algorithm that assumes the emissivity to be some approximate function of the wavelength. However, the reasonability of the assumed emissivity model for different materials is still an obstacle for accurate measurements of the emissivity.…”

Section: Introductionmentioning

confidence: 99%

Measurements of the directional spectral emissivity based on a radiation heating source with alternating spectral distributions

Fu¹,

Duan²,

Tang³

et al. 2015

International Journal of Heat and Mass Transfer

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“…As an improvement over one-color or two-color pyrometry, multi-wavelength pyrometry has been used to determine temperatures from spectral intensity measurements at different wavelengths [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. More measurement information greatly reduces the effect of the uncertainty in the spectral emissivity.…”

Section: Introductionmentioning

confidence: 99%