Onsite Calibration of a Precision IPRT Based on Gallium and Gallium-Based Small-Size Eutectic Points
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- 作者：Jianping Sun ; Xiaopeng Hao ; Fanchao Zeng…
- 关键词：Gallium ; based eutectic points ; Industrial platinum resistance thermometer ; Multi ; point ; Onsite calibration
- 刊名：International Journal of Thermophysics
- 出版年：2017
- 出版时间：April 2017
- 年：2017
- 卷：38
- 期：4
- 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
Onsite thermometer calibration with temperature scale transfer technology based on fixed points can effectively improve the level of industrial temperature measurement and calibration. The present work performs an onsite calibration of a precision industrial platinum resistance thermometer near room temperature. The calibration is based on a series of small-size eutectic points, including Ga–In (\(15.7 \,{^{\circ }}\hbox {C}\)), Ga–Sn (\(20.5 \,{^{\circ }} \hbox {C}\)), Ga–Zn (\(25.2 \,{^{\circ }} \hbox {C}\)), and a Ga fixed point (\(29.7 \,{^{\circ }} \hbox {C}\)), developed in a portable multi-point automatic realization apparatus. The temperature plateaus of the Ga–In, Ga–Sn, and Ga–Zn eutectic points and the Ga fixed point last for longer than 2 h, and their reproducibility was better than 5 mK. The device is suitable for calibrating non-detachable temperature sensors in advanced environmental laboratories and industrial fields.