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| Temperature Measurement System Based on Thermocouple with mK Precision |
| WANG Hao1,2,GAO Hong-tang2,XUE Zi2,YE Shu-Liang1 |
1. Institution of Industry and Trade Measurement Technique, China Jiliang University, Hangzhou, Zhejiang 310018, China;
2. National Institute of Metrology, Beijing 100029, China |
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Abstract A temperature measurement system which uses a standard platinum resistance thermometer to measure cold-junction temperature is developed to measure temperature with mK precision. By compensating the short-circuit potential of the scanning switch and placing the thermocouple junction properly, the stability and repeatability of the measurement system have been improved. Comparing with the standard platinum resistance thermometer at the same temperature, it is proved that this temperature measurement system can measure with mK precision in laboratory conditions.
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2014, Vol. 35 
