我国目前使用最多的热电偶是镍铬——镍硅(K型)、铂铑_10—铂(S型)热电偶。为了能在没有分度表而又需快速判定测量值可靠程度的情况下,使用这两种热电偶进行精密测量、检定和对配用的二次仪表检定,本文提出一种近似计算法来确定热电偶的热电关系,只要知道整百度点的对应热电势值,就可算出热电偶在使用范围内任意点的热电关系。 The most commonly used thermocouples in our country are Ni-Cr-Ni-Si (K type) and Pt-Rh-10-type (S type) thermocouples. In order to be able to quickly determine the reliability of the measured value without indexing table, the use of these two thermocouple precision measurement, verification and matching with the secondary instrument verification, this paper presents an approximate calculation method to determine Thermocouple thermoelectric relationship, as long as you know the whole point of the corresponding thermoelectric potential value, you can calculate the thermocouple within the scope of the use of any point of the thermoelectric relationship.