Thermocouple wire for temperature measurement is a pair of wires with insulating layer which have the same nominal value of thermoelectric motive force of the matched thermocouple in a certain temperature range. They are used to connect the thermocouple with the measuring device to compensate for the error caused by the temperature change of the connection point between them and the thermocouple. Heat resistance, heat resistance with compensation wire wire should be subjected to 220±5℃ for 24 hours after the heat resistance test, immediately the sample in 5 times the diameter of the cylinder bending 180 degrees should be no crack on the surface, compensation wire wire core and core between the insulation resistance between the shield layer is not less than 25MΩ per meter.

Thermocouple wire for temperature measurement as a precision resistance alloy is a pair of conductors with insulating layer in a certain temperature range and the same nominal value of the thermoelectric motive force of the matched thermocouple. It is used to connect the thermocouple and the measuring device, which can compensate the error caused by the temperature change of the connection with the thermocouple. It is connected with the free end of the S-type thermocouple, the two thermoelectric welding of the thermocouple must be strong; The two heat and electricity should be well insulated from each other to prevent short circuit; Non-standardized thermocouple in the range of use or order of magnitude are less than standardized thermocouple, generally there is no unified indexing table, mainly used for some special occasions measurement. Secondly, in the use of thermocouple temperature measurement, if you want to directly apply the thermocouple index table, it must *** meet the conditions of t0=0℃. So, not only is it not 0℃, but it's also not constant, because t0 is going to introduce an error.