为了提高热电偶测温的精度，利用ＡＤ５９０温度传感器对冷端温度进行动态测定，再根据热电偶分度表获得冷端补偿电势值，然后在微机内与热电偶实际输出电势进行代数迭加，通过热电偶分度表，便可由该代数和换算出实测温度。该补偿法在对海军某舰柴油机排气温度的测定中，取得了较高精度，达到了自动补偿和动态显示的目的 In order to improve the accuracy of thermocouple temperature measurement, the temperature of cold junction was measured by AD590 temperature sensor, then the cold junction compensation potential value was obtained according to thermocouple index table. Then, the output potential of thermocouple was algebraically superposed in microcomputer, By thermocouple indexing table, can be converted from the algebra and the measured temperature. The compensation method in the determination of the Navy’s diesel engine exhaust gas temperature, achieved higher accuracy, to achieve the purpose of automatic compensation and dynamic display