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发表于 2010-5-28 16:56:40
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本帖最后由 wty728 于 2010-5-28 17:01 编辑
Blackbody Calibration Source Truths
A precision blackbody (black body) is a controlled source of thermal radiation used to calibrate infrared radiation thermometers (pyrometers), thermal imagers and radiation heat flux gauges and radiometers. They are highly specialized and have been described and developed since Max Planck invented the concept at the end of the 19th century.
Needless to say, a practical blackbody simulates Planck's ideal source and the closeness of that simulation to the ideal, the more expensive they are. So, selection of one is a careful exercise in tradeoffs of needs versus cost. One, of course, must know what they need before selecting a given unit.
Blackbody thermal radiation sources are not something purchased every day, yet they are often kept for years. Some are used infrequently. Some are used with surprising regularity. So, a blackbody purchase is done usually with great care. On the connecting pages and links we have put together a few more helpful truths about them and some key specification components that must be considered.
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一种便携式中温固定点黑体炉
A Portable Black Body Furnace With Fixed Middle Temperature Points
介绍一种用于固定点准确复现的黑体炉,应用该装置,复现铟、锡和锌点温度的总不确定度为±0.21℃.这种黑体炉可以作为标准装置进行实验室比对以及对红外测温仪进行现场检定. |
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