描述了用熔丝法在铂点(1769℃)和铑点(1963℃)分度铱铑//铱热电偶的方法。分度是在以钽管和纯氧化铝管为内衬的碳管炉中,于大气气氛下进行。用0.01级直流电位差计测量热电势。分度的重现性为±2℃,误差为±3.6℃。用一等标准光学高温计检查了分度结果的可靠性,并用扫描电子显微镜检查了防碳污染的效果。 Describes a method of indexing an iridium-rhodium // iridium thermocouple using a fuse method at a platinum point (1769 ° C) and a rhodium point (1963 ° C). Indexing is in a tantalum tube and pure alumina tube lined carbon tube furnace, in the atmosphere. Thermopotential was measured with a 0.01 level DC potentiometer. Indexing repeatability of ± 2 ℃, the error is ± 3.6 ℃. The reliability of indexing results was checked with a first-class standard optical pyrometer and the effect of carbon-fouling was examined with a scanning electron microscope.