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介绍了用于校准常温黑体或红外辐射计的辐射度标准。此标准由标准黑体和辐射度校准装置构成。标准黑体空腔是圆柱-内凸圆锥空腔,工作温度范围是(-50～+90)℃。黑体空腔的有效发射率为0.9999±0.0002,腔口直径80mm。用此装置校准辐射亮度的合成不确定度(1σ)为0.46％,校准辐射照度的合成不确定度为0.95％,校准全辐射温度的合成不确定度为0.4K。用标准黑体产生的辐射照度还能校准红外辐射计的响应。
The radiometric standards for calibrating a blackbody or infrared radiometer at room temperature are described. This standard consists of a standard black body and irradiance calibration device. The standard blackbody cavity is a cylindrical-convex conical cavity with an operating temperature range of (-50 to + 90) ° C. The effective emissivity of the blackbody cavity is 0.9999 ± 0.0002 and the diameter of the mouth is 80mm. The combined uncertainty (1σ) of the calibration of the irradiance with this device is 0.46%, the combined uncertainty of the calibration irradiance is 0.95% and the combined uncertainty of the calibration of the total radiation temperature is 0.4K. The irradiance produced with a standard blackbody also calibrates the response of the infrared radiometer.