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Thermocouple Type N NiCrSi NiSiMg 1000℃ High Temperature Accuracy Bare Wire
TYPE N (NiCrSi Vs.NiCrMg) is used in oxidizing, inert or dry reducing atmospheres. Exposure to vacuum limited to short time periods. Must be protected from sulfurous and marginally oxidizing atmospheres. Reliable and accurate at high temperatures.
1. Chemical Composition
| Material | Chemical composition (%) | ||||
| Ni | Cr | Si | Mg | Al | |
| NP(NiCrSi) | bal | 13.7-14.7 | 1.2-1.6 | <0.01 | |
| NN(NiCrMg) | bal | <0.02 | 4.2-4.6 | 0.5~1.5 | |
2. Physical properties and Mechnical properties
|
Material |
Density(g/cm3) |
Melting point℃) |
Tensile Strength(Mpa) |
Volume resistivity(μΩ.cm) |
Elongation rate (%) |
| NP(NiCrSi) | 8.5 | 1410 | >620 | 100.0 (20℃) | >30 |
| NN(NiCrMg) | 8.6 | 1340 | >550 | 33.0(20℃) | >35 |
3. EMF Value range at different temperature
| Material | EMF value Vs Pt(μV) | |||||
| 100℃ | 200℃ | 300℃ | 400℃ | 500℃ | 600℃ | |
| NP(NiCrSi) | 1755~1813 | 3910~3976 | 6313~6383 | 8880~8959 | 11552~11654 | 14307~14433 |
| NN(NiCrMg) | 975~1005 | 1954~1986 | 2975~3011 | 4035~4075 | 5120~5170 | 6212~6274 |
| EMF value Vs Pt(μV) | |||||
| 700℃ | 800℃ | 900℃ | 1000℃ | 1100℃ | |
| 17129~17275 | 20010~20178 | 22951~23139 | 25943~26149 | 28972~29194 | |
| 7288~7362 | 8318~8402 | 9281~9373 | 10159~10261 | 10948~11060 | |
Thermocouple Extension Cable-Know How
The Compensation Wire Name and Code
| Compensation Alloy Wire Name | Positive | Negative | ||
| Name | Code | Name | Code | |
| Copper-Copper Nickel 0.6 | Copper | SPC | Copper Nickel 0.6 | SNC |
| Copper-Copper Nickel 0.6 | Copper | RPC | Copper Nickel 0.6 | RNC |
| Iron-Copper Nickel 22 | Iron | KPCA | Copper Nickel 22 | KNCA |
| Copper-Copper Nickel 40 | Copper | KPCB | Copper Nickel 40 | KNCB |
| Chromel-NiSi3 | Ni90Cr10 | KPX | Ni97Si3 | KNX |
| Iron-Copper Nickel 18 | Iron | NPC | Copper Nickel 18 | NNC |
| NiCr14Si-NiSi4Mg | NiCr14Si | NPX | NiSi4Mg | NNX |
| NiCr10-Copper Nickel 45 | NiCr10 | EPX | Copper Nickel 45 | ENX |
| Iron-Copper Nickel 45 | Iron | JPX | Copper Nickel 45 | JNX |
| Copper-Copper Nickel 45 | Copper | TPX | Copper Nickel 45 | TNX |
The Compensation Wire Nominal Chemical Composition
| Alloy Name | Code | Nominal Chemical Composition(%) | |||||
| Cu | Ni | Cr | Si | Fe | Mg | ||
| Copper | SPC | 100 | - | - | - | - | - |
| RPC | |||||||
| KPC | |||||||
| TPC | |||||||
| CuNi0.6 | SNC | 99.4 | 0.6 | - | - | - | - |
| RNC | |||||||
| NiCr10 | KPX | - | 90 | 10 | - | - | - |
| EPX | |||||||
| NiCr14Si | NPX | - | 84 | 14.5 | 1.5 | - | - |
| NiSi3 | KNX | - | 97 | - | 3 | - | - |
| NiSi4Mg | NNX | - | 94.5 | - | 4.5 | - | 1.0 |
| CuNi40 | KNCB | 60 | 40 | - | - | - | - |
| CuNi22 | KNCA | 78 | 22 | - | - | - | - |
| CuNi18 | NNC | 82 | 18 | - | - | - | - |
| CuNi45 | ENX | 55 | 45 | - | - | - | - |
| JNX | |||||||
| TNX | |||||||
| Iron | NPC | 100 | |||||
| JPX | |||||||
| KPCA | |||||||