Comparison of nickel–carbon and iron–carbon eutectic fixed point cells for the calibration of thermocouples
Comparison of nickel–carbon and iron–carbon eutectic fixed point cells for the calibration of thermocouples
复制标题
用于热电偶校准的镍碳和铁碳共晶定点电池的比较
DOI：
10.1088/0026-1394/43/6/004
复制
发表时间：
2006
期刊：
影响因子：
2.4
通讯作者：
A. C. Baratto
中科院分区：
文献类型：
--
作者：
F. Edler;A. C. Baratto
PTB 和 Inmetro 建造了三个新设计的镍碳 (Ni–C) 和三个铁碳 (Fe–C) 共晶定点池，满足可靠应用的要求并适合热电偶的校准。使用PTB（HTF-R）高温炉和两个铂/钯（Pt/Pd）热电偶比较它们的熔化温度。 Ni-C 共晶定点电池在熔化曲线拐点处测得的电动势在约 0.29°C 的温度范围内一致，而 Fe-C 电池的一致温度约为 0.09°C。在第二个高温炉（HTF-M，Inmetro）中对两个 Fe-C 共晶定点电池进行的额外比较测量证明了 Fe-C 共晶电池作为温度传播的传输标准的适用性。
Three nickel–carbon (Ni–C) and three iron–carbon (Fe–C) eutectic fixed points cells of a new design, meeting the requirements for reliable applications and being suitable for the calibration of thermocouples, were constructed at PTB and Inmetro. Their melting temperatures were compared by using the high-temperature furnace of PTB (HTF-R) and two platinum/palladium (Pt/Pd) thermocouples. The measured emfs of the Ni–C eutectic fixed point cells at the inflection points of the melting curves agree within a temperature equivalent of about 0.29 °C, compared with an agreement of about 0.09 °C found for the Fe–C cells. Additional comparison measurements of two Fe–C eutectic fixed point cells in a second high-temperature furnace (HTF-M, Inmetro) demonstrate the applicability of the Fe–C eutectic cells as transfer standards for the dissemination of temperatures.