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| Development of Ultra-low Temperature Adjustable Thermostat from -180 to -60 ℃ |
| CHANG Jia-qiang1,YANG Hong-yan1,ZHANG Xiang-yu1,QIU Ping2,ZHU Tian-yu3 |
1. Chengdu Metrological Verification and Testing Institute, Chengdu, Sichuan 610059, China
2. National Institute of Metrology, Beijing 100029, China
3. Beijing Lindian Weiye Electronic Technology Co.Ltd.,Beijing 100097, China |
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Abstract An ultra-low temperature adjustable thermostat device with continuously adjustable temperature function was developed, the design principle, specific structure, testing process, and experimental results of the device were described. In order to verify the performance of the device, the experiment of the device temperature volatility, the inter hole temperature uniformity experiment, and the heating rate tests were performed. The results show that the temperature volatility is better than 2mK/10min, the temperature difference is better than 2mK and the heating rate is better than 1.5℃/min. At the same time, the design of the temperature controller was completed, which can realize switching between multi-stage and single-stage temperature control. The developed ultra-low temperature adjustable thermostat device has a temperature range of -180~-60℃ and a temperature control resolution of 0.001K.
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Received: 19 May 2023
Published: 10 October 2023
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2023, Vol. 44 
