Comparisons of Co–C and Pd–C Eutectic-Point Cells for Thermocouple Calibration Between NMIA and NMIJ

详细信息    查看全文

• 作者：H. Ogura ; F. Jahan ; K. Yamazawa
• 关键词：Calibration ; Co–C eutectic point ; Pd–C eutectic point ; Thermocouple
• 刊名：International Journal of Thermophysics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：38
• 期：2
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Condensed Matter Physics; Classical Mechanics; Industrial Chemistry/Chemical Engineering; Physical Chemistry;
• 出版者：Springer US
• ISSN：1572-9567
• 卷排序：38

文摘

Comparisons between NMIA and NMIJ on the melting temperatures of the Co–C eutectic point and the Pd–C eutectic point were performed using an NMIJ high-temperature furnace. The eutectic-point cells were constructed by NMIA and NMIJ following two different specifications. NMIA designed two miniature crucibles, one for Co–C and one for Pd–C eutectic-point cells. NMIJ designed larger eutectic-point cells, one for Co–C and one for Pd–C eutectic-point cells. Prior to performing the comparisons, the effect of conductive heat flow through the thermocouple stem was evaluated during the melting. The comparisons of the Co–C eutectic-point cells and of the Pd–C eutectic-point cells were performed using types R, B and Pt/Pd thermocouples. Despite the different cell designs and different material sources, the melting temperatures of the Co–C and Pd–C eutectic-point cells under investigation agreed within 0.1 \(\,{^{\circ }}\hbox {C}\).