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热电偶由两极电极组成,对应的补偿导线也有两条。热电偶极性和补偿导线的极性应对应,否则会造成可观的误差。以下对此问题进行讨论。图1为热电偶电极和补偿导线极性的正确接法。
The thermocouple consists of bipolar electrodes with two corresponding compensation leads. The thermocouple polarity and the polarity of the compensating wire should match, otherwise it will cause considerable error. This question is discussed below. Figure 1 shows the correct connection of thermocouple electrodes and compensation leads.