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    工业铂电阻精确测温的方法

    2007-11-14

    摘  要:工业铂电阻具有测温准确,稳定性好等优点。但在实际使用中许多A级铂电阻测温准确度并不高,这主要是因为分度表的选用不当造成的。为满足高精度测量的要求,我们研究了铂电阻的测温特性,给出一种铂电阻精确测温的方法:通过校准确定铂电阻的测温特性,用特性公式计算温度。该方法具有较强的实用性、推广性。   关键词:工业铂电阻;分度表;测温特性;测温准确度;测量方法   中图分类号:TP212.11  文献标识码:A 文章编号:1672-4984(2007)04-0050-03   An accurate measurement method for platinum resistance ZHU Yu-hong (National Institute of Measurement and Testing Technology,Chengdu 610021,China)   Abstract: PRT has many merits such as high measurement accuracy, good stability and so on. However, the accuracy of grade a PRT is not high enough because of the indexing table. For contenting the demands of highly accuracy measurement fields, the author studied the temperature characteristics of PRT and suggested a method of improving the measurement accuracy of PRT by measuring temperature according to the characteristics formula of PRT. This method is practical.  

    Key words: Industrial PRT; Indexing table; Measurement accuracy; Temperature characteristics; Method of measurement




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