Abstract：The method of measuring the immersion characteristic in a liquid bath at 250 ℃ to estimate the inhomogeniety of thermocouple is introduced.Experimental apparatus can produce a large temperature gradient field in a small gap above the bath,when the electric pole of the thermocouple scan the field,the thermoelectrics at different locations are recorded.A group of fresh Pt10Rh-Pt thermocouples and an used one are tested.The repeatability of datum is satisfied,and the homogeneity of fresh thermocouples is better than the used one,which is concorded to logical presumption.
郑玮, 杨振华, 向明东. 在液槽中测试热电偶不均匀性方法探索[J]. 计量学报, 2013, 34(4): 356-359.
ZHENG Wei, YANG Zhen-hua, XIANG Ming-dong. Study of Inhomogeneity Test on Thermocouple in Liquid Bath. Acta Metrologica Sinica, 2013, 34(4): 356-359.
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