Since the electrode material of compensating wire and cable and thermocouple are different, the two contacts at the connection must be at the same temperature to avoid further error.
由于补偿导线和热电偶的热电级材料并不完全相同，所以要求它们连接处两接点温度相同，否则又会引入误差。
2
The material selection and structural design of the thermocouple sensor and the routine test conditions, especially the recovery factor and time constant experiment are introduced.