Thermocouple compensating conductor terms and symbols

Thermocouple compensating conductor is 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. Thermocouple compensating conductor terms and symbols: 1, tolerance, tolerance of thermocouple compensation wire is the result of the measuring system refers to the compensation conductor zui large deviation, the values expressed in microvolt, its tolerance into precision level and the size of the regular grade two. Type 2, compensation compensation wire compensation compensation wire, also known as compensation wire, the wire in the name of the chemical composition and thermocouple are different, but the value of thermoelectric emfs, at 0 100 ℃ or 0 200 ℃ with with thermocouple thermoelectric emfs nominal values are the same, with the letter 'C' attached to the thermocouple said after graduation, such as 'KC'. Different wire can be applied to the same degree of thermocouple, difference and additional letters, such as 'KCA', 'KCB'. Currently in use. 3, extend the compensating conductor extending compensation wire is also called extended type wire, the wire in the name of the chemical components and the thermoelectric emfs nominal value and the thermocouple, the same with the letter 'X' attached to the thermocouple said after graduation, such as 'KX' said K type thermocouple with compensation conductor should be extended type. 4, symbols F - — Said insulation layer for ptfe material; B— — Said sheath as non-alkali glass material; R— — Said wire core for compensating lead wires. Wire core for single strands of compensating lead wires not the letter; P— — Said a shielding layer of compensating lead wires; S— — Said compensation conductor thermoelectric properties for precision level. Regular grade compensation conductor should be not the letter; G— — Said the general compensation conductor; H— — Said heat compensation conductor; V— — Insulating layer or sheath is PVC material, PVC) 。