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The OL 480 serves as an accurate, variable temperature (100 to 1200°C) blackbody calibration standard. It is extremely useful for calibrating infrared radiometric and spectroradiometeric measurement systems. The OL 480 has an emmisivity of 0.99 ± 0.01 and an uncertainty in the digital temperature readout of ± 2°C.

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OL 480 黑體輻射亮度源.pdf