Development of H500 Type High Precision Vacuum Blackbody Used as a Calibration Standard for Infrared Remote Sensing
GONG Lü-yu1,2,HAO Xiao-peng2,SUN Jian-ping2,SONG Jian2,YUAN Zun-dong2,GU Ming-jian3,DING Lei3
1. College of Applied Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu,Sichuan 610059, China
2. National Institute of Metrology, Beijing 100029, China
3. Shanghai Institute of Technical Physics of the Chinese Academy of Sciences, Shanghai 200083, China
Abstract：A high precision vacuum blackbody（H500 type）with the temperature range between -93 ℃ to 220 ℃ is developed at the National Institute Metrology of China. The performances are tested under the vacuum and low background condition (liquid-nitrogen-cooled shroud). The major technical parameters of the blackbody, such as the emissivity and uniformity are measured at room temperature and atmospheric environment. When the heating rate is 1 ℃/min, the time is shorter than 50 minutes and the temperature stability is better than 0.01 ℃ during 10 minutes. The emissivity of the blackbody at 20 ℃, 30 ℃ and 50 ℃ are 0.996 5, 0.9966 and 0.996 3, respectively. The temperature uniformity at the bottom of the blackbody cavity is better than 0.03 ℃. The expanded uncertainty is better than 0.1 ℃（k=2） over the entire temperature range.
龚律宇,郝小鹏,孙建平,宋健,原遵东,丁雷,顾明剑. H500型红外遥感定标高精度真空黑体辐射源的研制[J]. 计量学报, 2017, 38(2): 129-134.
GONG Lü-yu,HAO Xiao-peng,SUN Jian-ping,SONG Jian,YUAN Zun-dong,GU Ming-jian,DING Lei. Development of H500 Type High Precision Vacuum Blackbody Used as a Calibration Standard for Infrared Remote Sensing. Acta Metrologica Sinica, 2017, 38(2): 129-134.
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2017, Vol. 38 
