文章摘要
浅谈铂铑热电偶测温准确性的影响因素
Discussion on the Influence Factors for Temperature Measurement Accuracy of Pt-Rh Thermocouple
投稿时间:2018-05-24  
DOI:
中文关键词: 金属材料  热电偶  热电势  测温  生产  使用
英文关键词: metal material  thermocouple  EMF  temperature measurement  production  use
基金项目:
作者单位E-mail
李雪娇 南京理工大学 材料学院南京 210094;无锡英特派金属制品有限公司江苏 无锡 214192 251226276@qq.com 
屈新鑫 无锡英特派金属制品有限公司江苏 无锡 214192  
熊雅玲 无锡英特派金属制品有限公司江苏 无锡 214192  
金英杰 无锡英特派金属制品有限公司江苏 无锡 214192  
施卫锋 无锡英特派金属制品有限公司江苏 无锡 214192  
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中文摘要:
      贵金属热电偶具有优良的测温性能。综述了热电偶的制作和使用过程中影响测温准确性的主要因素。在生产过程中要保证原料的纯度,避免杂质污染,控制热电偶不均与热电势;熔炼过程中,合理的浇铸温度、设备和工艺条件能降低热电势的不均匀性。热电偶使用前应充分退火,消除其加工应力产生的晶格畸变;良好的使用环境和必要的避潮保存条件能延长热电偶使用寿命。
英文摘要:
      The precious metal thermocouples have excellent temperature measuring performance. The main factors influencing the accuracy of the temperature measurement during the manufacture and use of thermocouples were reviewed. In the production process, the raw materials should have high purity, and any impurity contamination should be avoided, and thermocouple unevenness and thermoelectric potential should be minimized. Optimum pouring temperature, technology conditions and appropriate equipment can reduce the inhomogeneity of electromotive force during smelting process. Thermocouples should be fully annealed before using, and the annealing process can eliminate lattice distortion from the processing stress. The service life of the thermocouples can be prolonged under good use environment and dry storage conditions.
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