Product DescriptionBright color thermocouple wire type k 20AWGNiCr-NiSi (Type K) thermocouple finds the widest use in all basemetal thermocouple, at temperature above 500 °C.
Type K thermocouple has strong resistance to oxidation than other base metal thermocouples. It has high EMF against Platinum 67, excellent temperature accuracy, sensitivity and stability, with a low cost. It is recommended for oxidizing or inert atmospheres, but cannot be used directly in the following cases:
(1) Alternatively oxidizing and reducing atmosphere.
(2) Atmosphere with sulphur gases.
(3) Long time in vacuum.
(4) Low oxidizing atmosphere such as hydrogen and carbon monoxide atmosphere.
Detailed Parameter of thermocouple wire Chemical Composition |
Conductor Name | Polarity | Code | Nominal Chemical Composition /% |
Ni | Cr | Si |
Ni-Cr | Positive | KP | 90 | 10 | -- |
Ni- Si | Negative | KN | 97 | -- | 3 |
Working Temperature |
Diameter/mm | Long time Working temperature /ºC | Short period Working temperature /ºC |
0.3 | 700 | 800 |
0.5 | 800 | 900 |
0.8,1.0 | 900 | 1000 |
1.2,1.6 | 1000 | 1100 |
2.0,2.5 | 1100 | 1200 |
3.2 | 1200 | 1300 |
Application of thermocouple wire:1. Heating - Gas burners for ovens
2. Cooling - Freezers
3. Engine protection - Temperatures and surface temperatures
4. High temperature control - Iron casting