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Compensation wire is a pair of insulated wires with the same nominal value as the matching thermocouple thermoelectric electromotive force in a certain temperature range (0~100℃). They are connected with the thermocouple and the measuring device to compensate the error caused by the temperature change at the connection between them and the thermocouple.
Compensation conductor should be general use on the thermocouple, and resistance to high temperature compensation wire thermocouple compensation wire insulation layer and protective layer of selected materials and according to the requirement of the environment is different, have fluorine plastic sheath material, low smoke low halogen polyvinyl chloride (PVC) and several non-alkali glass, imported high quality fluorine plastic can heat resistance of 260 ℃, and USES the new technology of the continuous extrusion, make the product has excellent acid, Alkali, wear resistance and flame retardant properties, can be immersed in oil and water long - term use. The operating temperature of thermocouple compensation wire can be between 60℃ and 260℃, which belongs to the contemporary international advanced level.
Series of products are mainly used in various temperature measuring devices, compensation wire models according to the product variety is divided into SC, KC, KX, EX, JX, TX, NC. Thermocouple compensation wire product use characteristics: compensation wire can work in -60 ~ 260℃ environment, is a very ideal automation unit. It has been widely used in petroleum, chemical, metallurgy, electric power and other departments of automatic temperature meter single point or multi-point connection.
| Core of Cable | Nominal Section(mm2) | Strand | Single Diameter(mm) |
| Single wire | 0.2mm2 0.5mm2 1.0mm2 1.5mm2 2.5mm2 | 1 | 0.52 0.8 1.13 1.37 1.76 |
| Strand wire | 0.2mm2 0.5mm2 1.0mm2 1.5mm2 2.5mm2 | 7,19 | 0.2 0.3 0.43 0.52 0.41 |
(1) Move the reference end of the thermocouple from a high temperature to a place where the ambient temperature is stable.
(2) Save a lot of precious and rare metal materials used in the manufacture of thermal electrodes.
(3) The use of compensation wire is convenient for installation and laying of the line.
(4) Replacing the thermal electrode with a compensation wire with a larger diameter and high conductivity can reduce the resistance of the thermocouple circuit, which is conducive to measurement and automatic control.
| Compensation wire model | The indexing number of the thermocouple | Compensating wire alloy wire | Insulator coloring | Tolerance at 100℃ | ||
| positive pole | negative pole | positive pole | negative pole | Common level | ||
| KC | K | KPC（Pb） | KNC（CuNi） | Red | Blue | ±2.5 |
| KX | K | KPX（NiCr） | KNX（NiSi） | Red | Black | ±2.5 |
| EX | E | EPX（NiCr） | ENX（CuNi） | Red | Brown | ±2.5 |
| JX | J | JPX（Fe） | JNX（CuNi） | Red | Purple | ±2.5 |
| TX | T | TPX(Cu） | TNX（CuNi） | Red | White | ±1.0 |
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