To make accurate temperature measurements with thermocouples, the reference junction temperature must remain constant. If it varies, suitable compensation for these variations must be provided.
要用热电偶实现精确的温度测量，参考端温度必须保持恒定；如果会变化，必须提供这些变化的适当补偿。
2
The unique method of cold junctioncompensation reduces the error resulted by traditional compensation.
独特的冷端补偿方法有效地减少了冷端补偿引入的误差。
3
In this paper, a new bridge circuit for cold junctioncompensation, in which extension wire is not needed, is proposed.