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Product Details:
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| Conductor Material: | Ni-Cr, Ni-Al | Diameter: | AWG8 |
|---|---|---|---|
| Status: | Bright Or Oxidized | Standard: | ANSI Or IEC Or DIN |
| Insulation Material: | Fiberglass，Stainless Steel, PTFE | Color: | As Per Customers Request |
| Highlight: | k type thermocouple cable,thermocouple bare wire |
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TYPE K (CHROMEL vs ALUMEL ) 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 | Mn | Al | |
| KP(Chromel) | 90 | 10 | |||
| KN(Alumel) | 95 | 1-2 | 0.5-1.5 | 1-1.5 | |
2. Physical properties and Mechnical properties
|
Material |
Density(g/cm3) |
Melting point℃) |
Tensile Strength(Mpa) |
Volume resistivity(μΩ.cm) |
Elongation rate (%) |
| KP(Chromel) | 8.5 | 1427 | >490 | 70.6(20℃) | >10 |
| KN(Alumel) | 8.6 | 1399 | >390 | 29.4(20℃) | >15 |
3. EMF Value range at different temperature
| Material | EMF value Vs Pt(μV) | |||||
| 100℃ | 200℃ | 300℃ | 400℃ | 500℃ | 600℃ | |
| KP(Chromel) | 2816~2896 | 5938~6018 | 9298~9378 | 12729~12821 | 16156~16266 | 19532~19676 |
| KN(Alumel) | 1218~1262 | 2140~2180 | 2849~2893 | 3600~3644 | 4403~4463 | 5271~5331 |
| EMF value Vs Pt(μV) | ||||
| 700℃ | 800℃ | 900℃ | 1000℃ | 1100℃ |
| 22845~22999 | 26064~26246 | 29223~29411 | 32313~32525 | 35336~35548 |
| 6167~6247 | 7080~7160 | 7959~8059 | 8807~8907 | 9617~9737 |
4.The available thermocouple type and alloy material:
| Name and code of alloy wires | |||
| Positive | Negative | ||
| Name | Code | Name | Code |
| NiCr10 (Chromel) | KP |
NiSi3 /(Alumel) (China standard) |
KN |
|
NiAl/(Alumel) (IEC standard) |
KN | ||
| NiCr14.2Si | NP | NiSi4 | NN |
| NiCr10 (Chromel) | EP | CuNi45 (Constantan) | EN |
| Fe | JP | CuNi45 (Constantan) | JN |
| Cu | TP | CuNi45 (Constantan) | TN |
5.Thermocouple wire electromotive force (EMF) Tolerance:
| Thermocouple Type | Grade | Temperature range ℃ | Electromotive force(EMF) Tolerance | |
| IEC (EN)60584 | ASTM E230 | |||
| Type K & Type N | Ⅰ | -40～1100 | ±1.5℃ or ±0.4%t | ±1.1℃ or ±0.4% |
| Ⅱ | -40～1300 | ±2.5℃ or ±0.75%t | ±2.2℃ or ±0.75% | |
| Type E | Ⅰ | -40～1100 | ±1.5℃ or ±0.4%t | ±1.0℃ or ±0.4% |
| Ⅱ | -40～1300 | ±2.5℃ or ±0.75%t | ±1.7℃ or ±0.5% | |
| Type J | Ⅰ | -40～750 | ±1.5℃ or ±0.4%t | ±1.1℃ or ±0.4% |
| Ⅱ | -40～750 | ±2.5℃ or ±0.75%t | ±2.2℃ or ±0.75% | |
| Type T | Ⅰ | -40～350 | ±0.5℃ or ±0.4%t | ±0.5℃ or ±0.4% |
| Ⅱ | -40～350 | ±1.0℃ or ±0.75%t | ±1.0℃ or ±0.75% | |
Contact Person: Mr. Qiu
Tel: +8613795230939
