基于G-M低温制冷机的低温温度计标定系统
Cryogenics & Superconductivity(2013)
Abstract
设计和搭建了一套5.2—300K温区的温度计标定系统,以G-M制冷机为冷源,进口已标定温度计为定标源,对Cernox负温度系数温度计、硅二极管温度计、PT100铂电阻温度计等进行了标定,获得了其温度特性曲线并进行对比,分析了标定误差,发现该系统具有较高的标定精度,所标定的温度计在其有效温区内能达到±15mK以内的不确定度,与定标源温度计处于同等量级。
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Key words
Temperature measurement,Calibration,Temperature sensors,G-M cryocooler
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