Thermocouple compensating conductor structure and definition of _ instrument

Thermocouple compensation conductor should be referred to as 'compensation conductor, usually by the compensating conductor wire, insulation, sheath, shielding layer. In a certain temperature range ( Including room temperature) , with the matched the thermocouple thermoelectric emfs the nominal value of the same pair of wire with insulation layer, use them to connect the thermocouple and measuring devices, to compensate them with the error produced by the temperature change of the thermocouple junction. Between the thermocouple and measuring device using compensation conductor, its advantages are two: 1, the improvement of physical properties and mechanical properties of thermocouple temperature measurement circuit, using multi-strand wire core or small diameter flexible compensation wire line can be improved, is convenient wiring, also can adjust circuit resistance or shielding interference; 2, to reduce the cost of measuring circuit, when the thermocouple and measure unit of distance, compensation conductor can save a lot of thermocouple materials used, especially when using the precious metal thermocouple, more obvious economic benefit.