Reference Blackbody Sources in the 100–3500 K Range for Precision Measurements in Radiometry, Photometry, and Optical Thermometry

Khlevnoi, B. B.; Ogarev, S. A.; Sapritskii, V. I.; Morozova, S. P.; Samoilov, M. L.; Sakharov, M. K.; Khromchenko, Vladimir B.; Shapoval, V. I.

doi:10.1007/s11018-006-0024-9

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…3000 K The majority of the requirements mentioned above for matching the properties of calibration light sources and shock pyrometry experiments can be easily satisfied when the measured temperatures do not exceed approximately 2300 K. Many commercially available, compact blackbody simulators operate below 1800 K. 12,13,41 Some experimental models were reported that operate up to 3300 K. [42][43][44] However, reasonably stable and well-characterized blackbodies operating above 3000 K are quite bulky and require water cooling and inert gas purging of window-covered hot cavities. 45,46 We found only two vendors of commercial blackbody simulators operating above 2300 K. 47,48 Each of these devices weighs approximately 182 kg and has a volume of 0.7-0.8 m 3 .…”

Section: Review Of Calibration Sources For Shock Temperature Pyromentioning

confidence: 99%

Contributed Review: Absolute spectral radiance calibration of fiber-optic shock-temperature pyrometers using a coiled-coil irradiance standard lamp

Fat’yanov

Asimow

2015

Review of Scientific Instruments

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Development of a fast fiber-optic two-color pyrometer for the temperature measurement of surfaces with varying emissivities Rev. Sci. Instrum. 72, 3366 (2001); 10.1063/1.1384448 This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitationnew. We describe an accurate and precise calibration procedure for multichannel optical pyrometers such as the 6-channel, 3-ns temporal resolution instrument used in the Caltech experimental geophysics laboratory. We begin with a review of calibration sources for shock temperatures in the 3000-30 000 K range. High-power, coiled tungsten halogen standards of spectral irradiance appear to be the only practical alternative to NIST-traceable tungsten ribbon lamps, which are no longer available with large enough calibrated area. However, non-uniform radiance complicates the use of such coiled lamps for reliable and reproducible calibration of pyrometers that employ imaging or relay optics. Careful analysis of documented methods of shock pyrometer calibration to coiled irradiance standard lamps shows that only one technique, not directly applicable in our case, is free of major radiometric errors. We provide a detailed description of the modified Caltech pyrometer instrument and a procedure for its absolute spectral radiance calibration, accurate to ±5%. We employ a designated central area of a 0.7× demagnified image of a coiled-coil tungsten halogen lamp filament, cross-calibrated against a NIST-traceable tungsten ribbon lamp. We give the results of the cross-calibration along with descriptions of the optical arrangement, data acquisition, and processing. We describe a procedure to characterize the difference between the static and dynamic response of amplified photodetectors, allowing time-dependent photodiode correction factors for spectral radiance histories from shock experiments. We validate correct operation of the modified Caltech pyrometer with actual shock temperature experiments on single-crystal NaCl and MgO and obtain very good agreement with the literature data for these substances. We conclude with a summary of the most essential requirements for error-free calibration of a fiber-optic shock-temperature pyrometer using a high-power coiled tungsten halogen irradiance standard lamp. C 2015 AIP Publishing LLC.[http://dx

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Section: Review Of Calibration Sources For Shock Temperature Pyromentioning

confidence: 99%

Contributed Review: Absolute spectral radiance calibration of fiber-optic shock-temperature pyrometers using a coiled-coil irradiance standard lamp

Fat’yanov

Asimow

2015

Review of Scientific Instruments

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“…Einerseits treten auf ihnen für eine präzise Kalibrierung nicht zu vernachlässigende Temperaturgradienten auf, welche die mittlere ausgesandte Strahlungstemperatur verfälschen, andererseits kann ihr temperatur-, richtungs-und wellenlängenabhängiger Oberflächenemissionsgrad nur mit einer absoluten Unsicherheit von 10 −2 bestimmt werden [3]. Anstelle von ebenen Flächenstrahlern werden deshalb für Präzisionskalibrierungen Hohlraumstrahler benutzt [4,5]. Diese Hohlraumstrahler sind typischerweise zylindrische Körper (s. Abb.…”

Section: Grundlagen Der Berechnungenunclassified

1.3.2 Berechnung des effektiven Emissionsgrads von Referenzstrahlern aus Aluminiumoxid

Schalles¹,

Blumröder²

2012

Tagungsband

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“…Several national metrology institutes were focused on further development of HTFPs. All-Russian Research Institute for Optical and Physical Measurements (VNIIOFI) has successfully developed a series of large-area HTFPs and large-area high temperature blackbody sources [8,9]. National Institute of Metrology (NIM) took part in the international cooperation and independently manufactured a batch of high-quality M-C and MC-C HTFPs [10,11].…”

Section: Introductionmentioning

confidence: 99%

Spectral irradiance scale realization and uncertainty analysis based on a 14 mm diameter WC–C fixed point blackbody from 250 nm to 2500 nm

Dai

Wang

et al. 2022

Metrologia

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Spectral irradiance scale in the wavelength range from 250 nm to 2500 nm was realized at National Institute of Metrology (NIM) on the basis of a large area tungsten carbide–carbon (WC-C) high temperature fixed point blackbody, which is composed of a 14 mm diameter WC-C fixed point cell and a variable temperature blackbody BB3500MP as a furnace. A series of 1000 W FEL tungsten halogen lamps were used as transfer standards. The new spectral irradiance scale was compared with the scale based on a variable-temperature blackbody BB3500M, and the divergence between these two methods varied from -0.66% to 0.79% from 280 nm to 2100 nm. The measurement uncertainty of spectral irradiance scale based on fixed-point blackbody was analyzed, and the expanded uncertainty was estimated as 3.9% at 250 nm, 1.4% at 280 nm, 0.43 % at 400 nm, 0.27% at 800 nm, 0.25% at 1000 nm, 0.62% at 1500 nm, 0.76% at 2000 nm, and 2.4% at 2500 nm respectively. In the range from 300 nm to 1000 nm the fixed-point scale was improved obviously: the uncertainty decreased by more than 25% compared to the uncertainty based on the variable temperature blackbody. Below 300 nm, the uncertainty became higher because the signal to noise ratio was poor. Above 1100 nm, the contribution of temperature measurement to the uncertainty of spectral irradiance decreases, therefore the uncertainties of two methods are almost at the same level. The fixed-point blackbody was also used to realize the correlated colour temperature and distribution temperature of a tungsten filament lamp, the deviation from the variable temperature blackbody method was -0.5 K and -2.9 K, respectively.

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Reference Blackbody Sources in the 100–3500 K Range for Precision Measurements in Radiometry, Photometry, and Optical Thermometry

Cited by 5 publications

References 2 publications

Contributed Review: Absolute spectral radiance calibration of fiber-optic shock-temperature pyrometers using a coiled-coil irradiance standard lamp

Contributed Review: Absolute spectral radiance calibration of fiber-optic shock-temperature pyrometers using a coiled-coil irradiance standard lamp

1.3.2 Berechnung des effektiven Emissionsgrads von Referenzstrahlern aus Aluminiumoxid

Spectral irradiance scale realization and uncertainty analysis based on a 14 mm diameter WC–C fixed point blackbody from 250 nm to 2500 nm

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