补偿导线的作用是来延伸热电极即移动热电偶的冷端与显示仪表联接构成测温系统.
补偿导线、补偿电缆型号


型号     配用热电偶分度号          配用热电偶           补偿导线及补偿电缆线芯材料
                                                  正极 负极
BC             B                           铂铑30-铂铑6                    铜（Cu）
                                               PtRh30- PtRh6                  铜（Cu）
SC            S                            铂铑10-铂                          铜SPC（Cu）      
                                               PtRh10- Pt                        铜镍0.6SNC(CuNi0.6)
RC           R                            铂铑13-铂                          铜RPC（Cu）
                                               PtRh13- Pt                        铜镍0.6RNC(CuNi0.6
WC3/25  WRe3-WRe25         钨铼3-钨铼25
                                               Wre3-Wre25                     WPC3/25 WNC3/25
WC5/26 WRe5-WRe26          钨铼5-钨铼26
                                               Wre5-Wre26                      WPC5/26 WNC5/26