测高温用热电偶与二次仪表之间需用补偿导线联结,以保证测量精度。目前节省补偿导线方法比较多,现推荐二种成功的经验,供参考。一、公用负线法:镍铬—一镍铝热电偶,需配用铜——康铜(苏联型号K H-M2×1.5或2×2.5)补偿导线。在采用一组热电偶经过切换电键接于一只二次仪表时,可采用如下接线法: Thermocouple with the secondary instrument between the need to use compensation wire connection, in order to ensure measurement accuracy. At present, there are many ways to save compensation wire, and two successful experiences are recommended for reference. First, the common negative line method: nickel-chromium - a nickel-aluminum thermocouple, copper with need to be equipped - Hong Tong (Soviet model K H-M2 × 1.5 or 2 × 2.5) compensation wire. In the use of a group of thermocouples through the switch key connected to a secondary instrument, you can use the following wiring: