| 论Eppley PIR精密红外辐射仪的测量精度 |
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| 引用本文： | 江灏,沈志宝.论Eppley PIR精密红外辐射仪的测量精度[J].高原气象,1992(4). |
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| 作者姓名： | 江灏 沈志宝 |
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| 作者单位： | 中国科学院兰州高原大气物理研究所,中国科学院兰州高原大气物理研究所 甘肃省兰州市 730000,甘肃省兰州市 730000 |
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| 摘 要： | 本文依据红外辐射表(PIR)的结构、性能和工作原理讨论了测量精度及有关影响因素,比较了粗测和精测两种方法的特点,在此基础上提出了各测量方法的适用范围和精度范围以及提高测量精度的措施,同时也给出了一些特定场合下的测量实例及提高测量精度的具体方法。分析表明:精测方法具有很好的测量精度以及很强的环境适应性。粗测在限定的温度范围内具有测量简单、换算方便、易于实现自动化等优点,精度尚能满足一般要求,但在限定的温度范围以外,测量精度急剧恶化。在影响测量精度的各因素中以温度响应中表体热辐射测量的影响最大,在粗测方法中表内电池的性能与测量精度关系重大。强烈日射对测量精度有一定影响,经订正后可基本消除。
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| 关 键 词： | 精密红外辐射仪 辐射表 测量精度 |
THE DISCUSSION OF MEASURE ACCURACY OF EPPLEY PIR PYRGEOMETER |
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| Jiang Hao Shen Zhibao.THE DISCUSSION OF MEASURE ACCURACY OF EPPLEY PIR PYRGEOMETER[J].Plateau Meteorology,1992(4). |
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| Authors: | Jiang Hao Shen Zhibao |
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| Abstract: | In this paper, the measure accuracy of PIR pyrgeometer. and its effect factors are discussed on the basis of the structure, performance and work principle of the pyrgeometer. The characters between "simple" and "accurate" measure method are compared. The applied condition and the range of measure accuracy are given and some methods are given to get higher measure accuracy in some special conditions. The analysis and experiments show that: The "accurate measure" method has a good measure accuracy and wide ambient adaptability. The "simple measure" method has a general accuracy, is easy operated and calculated. But when the air temperature is over the limited value, the accuracy is very bad. In all of the effect factors, the thermal radiation of pyrgeometer is important. Using the "simple measure" method, the measure accuracy is close relation to the performance of battery in the pyrgeometer. The strong solar radiation has some effect to the measure accuracy, it can be removed by correction. |
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| Keywords: | PIR Pyrgeometer Measure accuracy |
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