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本文叙述了用中国计量科学研究院基准光电比较仪复现铜凝固点的设备及实验方法。给出铜凝固点复现的标准偏差为0.02℃,准确度为±0.05℃,置信度为99％。初步测定的铜凝固点值为(1084.92±0.1)℃。文中讨论了铜凝固点作为高温温标固定点传递方法的可能性。
This article describes the use of China Institute of Metrology Reference photoelectric comparator recapture the freezing point of copper equipment and experimental methods. The standard deviation of reappearance of copper solidification point is 0.02 ℃, the accuracy is ± 0.05 ℃ and the confidence is 99%. The initial determination of copper freezing point value (1084.92 ± 0.1) ℃. The paper discusses the possibility of the copper solidification point being used as the fixed point transfer method at high temperature and temperature scale.