Thermocouple Type K Alumel / Chromel Rod / Stick / Bar 6mm 8mm 9mm 10mm 12mm
Thermocouple Type K Alumel /ʻO Chromel Rod/ Laau / Bar 6mm 8mm 9mm 10mm 12mm
Hoʻohana ʻia ʻo TYPE K (CHROMEL vs ALUMEL) i ka ea hoʻoemi ʻana, inert a maloʻo paha. Pono ia e pale ʻia mai ka sulfurous a me ka marginally oxidizing atmospheres. He hilinaʻi a he kiʻekiʻe pololei i nā wela kiʻekiʻe.
1.KemikaHuina
| Mea waiwai | ʻO ka hui kemika (%) | ||||
| Ni | Cr | Si | Mn | Al | |
| KP(Chromel) | 90 | 10 | |||
| KN(Alumel) | 95 | 1-2 | 0.5-1.5 | 1-1.5 | |
2.Na Waiwai Kino a me na Pono Mekini
| Mea waiwai |
ʻO ka mānoanoa (g/cm3) | Ka helu hehee ℃) | Ikaika U'i (Mpa) | Ke kū'ē leo (μΩ.cm) | Ka lōʻihi o ka lōʻihi (%) |
| KP(Chromel) | 8.5 | 1427 | >490 | 70.6(20 ℃) | >10 |
| KN(Alumel) | 8.6 | 1399 | >390 | 29.4(20 ℃) | >15 |
3.EMF Waiwai ma nā ʻokoʻa wela
| Mea waiwai | Waiwai EMF 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 |
| Waiwai EMF 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 |
| Nā ʻokoʻa Thermocouple a me ka Index | ||
| ʻokoʻa | ʻAno | Ana Ana (°C) |
| NiCr-NiSi | K | –200–1300 |
| NiCr-CuNi | E | –200–900 |
| Fe-CuNi | J | –40–750 |
| Cu-CuNi | T | –200–350 |
| NiCrSi-NiSi | N | –200–1300 |
| NiCr-AuFe0.07 | NiCr-AuFe0.07 | –270–0 |
0.5″ 12.7mm KP Chromel KN Alumel Thermocouple Type K Rod Application
ʻO ka hiʻohiʻona o ka Type K ʻo ia ka hana anti-oxidation ikaika, a pono e hoʻohana mau ʻia i loko o kahi ea oxidizing a inert. ʻO ka mahana hoʻohana lōʻihi he 1000 ℃ a me ka wā pōkole 1200 ℃. ʻO ia ka mea i hoʻohana nui ʻia ma waena o nā thermocouple a pau; (ʻaʻole hiki ke hoʻohana ʻia e hoʻemi i ka ea kinoea).
ʻO ka Thermocouple hana a ana ʻana i ka wela wela:
| Mea Thermocouple | Palena wela hana a me ke ahonui | |||||
| Papa I | Papa II | |||||
| Papa kuhikuhi | Anode | Cathode | Ana wela | Hoʻomanawanui | Ana wela | Hoʻomanawanui |
| K | NiCr10 | NiAl2 | -40 ℃-1000 ℃ | ± 1.5 ℃ a i ʻole ± 0.4%*T | 40 ℃-1200 ℃ | ± 2.5 ℃ a i ʻole 0.75%*T |
| T | Cu | CuNi40 | -40 ℃-350 ℃ | 40 ℃-350 ℃ | ±1 ℃ a i ʻole 0.75%*T | |
| J | Fe | CuNi40 | -40 ℃-750 ℃ | 40 ℃-750 ℃ | ± 2.5 ℃ a i ʻole 0.75%*T | |
| E | NiCr10 | CuNi45 | -40 ℃-800 ℃ | 40 ℃-900 ℃ | ||
| N | NiCr14Si | NiSi4Mg | -40 ℃-1000 ℃ | 40 ℃-1200 ℃ | ± 2.5 ℃ a i ʻole 0.75%*T | |
| R | Pt-13%Rh | Pt | 0 ℃-1000 ℃ | 0 ℃-600 ℃ | ±1.5 ℃ | |
| S | Pt-10%Rh | 1000 ℃-1600 ℃ | ±(1+0.003) | 600 ℃-1600 ℃ | 0.25%*T | |
| B | Pt-30%Rh | Pt-6%Rh | - | - | 600 ℃-1700 ℃ | ±1.5 ℃ a i ʻole 0.25%*T |
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