| 测温元件测量误差的传热学分析 |
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| 引用本文： | 岳希明,梁晓军,王三保,赵松善. 测温元件测量误差的传热学分析[J]. 郑州轻工业学院学报(自然科学版), 2003, 18(3): 38-40 |
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| 作者姓名： | 岳希明 梁晓军 王三保 赵松善 |
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| 作者单位： | 1. 郑州大学,化工学院,河南,郑州,450002
2. 河南轮胎厂,河南,焦作,454000 |
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| 摘 要： | 通过金属保护壳与容器连接的模型简化，对测温仪表金属保护壳进行传热学分析．分析结果为：测温仪表的测量误差与测温元件伸入流体的长度有关．实验验证结果为：伸入流体长度为200mm时热电阻的测温误差为0.42％，伸入流体长度为100mm时热电阻的测温误差为0．80％；在要求测温误差小于介质温度与容器器壁温度之差的0．5％的情况下，伸入流体长度必须大于170mm。
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| 关 键 词： | 温度测量仪表 金属保护壳 传热学分析 测量误差 |
| 文章编号： | 1004-1478(2003)03-0038-03 |
| 修稿时间： | 2003-04-21 |
Heat-conduct analysis of measuring error of thermometric component |
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| YUE Xi-ming,LIANG Xiao-jun,WANG San-bao,ZHAO Song-shan. Heat-conduct analysis of measuring error of thermometric component[J]. Journal of Zhengzhou Institute of Light Industry(Natural Science), 2003, 18(3): 38-40 |
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| Authors: | YUE Xi-ming LIANG Xiao-jun WANG San-bao ZHAO Song-shan |
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| Affiliation: | YUE Xi-ming~1,LIANG Xiao-jun~1,WANG San-bao~1,ZHAO Song-shan~2 |
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| Abstract: | Metal vessel of thermometer in common use is analyzed in heat-conduct field by mathematical simplification for industrial model.It is concluded that the measuring error of thermometer is related to the dip length of thermometer.It is proved by the experimental result that the measuring error of thermal resistance is 0.42% as the dip length of thermometer is 200 mm and the measuring error is 0.80% at 100 mm dip length of thermometer.When the measuring error required is less than 0.5% of the difference value between the temperature of liquor and the temperature of metal vessel,the dip length of thermometer must be more than 170 mm. |
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| Keywords: | thermometric component measuring error simple model heat-conduct analysis |
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