Mofuta oa Thermocouple K Alumel / Chromel Rod / Stick / Bar 6mm 8mm 9mm 10mm 12mm
Thermocouple Mofuta oa K Alumel /Khoele ea Chromel/ Thupa / Sekotjana 6mm 8mm 9mm 10mm 12mm
Mofuta oa K (CHROMEL vs ALUMEL) o sebelisoa moeeng o fokotsang oksijene, o sa sebetseng kapa o omileng. O lokela ho sireletsoa moeeng o nang le sebabole le o fokotsang oksijene hanyane. Oa tšepahala 'me o na le ho nepahala ho phahameng mochesong o phahameng.
1.KhemikhaleSebopeho
| Thepa | Sebopeho sa lik'hemik'hale (%) | ||||
| Ni | Cr | Si | Mn | Al | |
| KP(Chrome) | 90 | 10 | |||
| KN(Alumel) | 95 | 1-2 | 0.5-1.5 | 1-1.5 | |
2.Matlotlo a 'Mele le Matlotlo a Mekheniki
| Thepa |
Botenya (g/cm3) | Ntlha ea ho qhibiliha℃) | Matla a ho Tenyetseha (Mpa) | Bophahamo ba modumo (μΩ.cm) | Sekhahla sa ho lelefatsa (%) |
| KP(Chrome) | 8.5 | 1427 | >490 | 70.6(20℃) | >10 |
| KN(Alumel) | 8.6 | 1399 | >390 | 29.4(20℃) | >15 |
3.Mefuta ea Boleng ba EMF Mochesong o Fapaneng
| Thepa | Boleng ba EMF khahlanong le Pt(μV) | |||||
| 100℃ | 200℃ | 300℃ | 400℃ | 500℃ | 600℃ | |
| KP(Chrome) | 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 |
| Boleng ba EMF khahlanong le 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 |
| Mefuta-futa ea Thermocouple le Index | ||
| Mefuta e fapaneng | Mofuta | Sebaka sa Tekanyo(°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
Tšobotsi ea Mofuta oa K ke hore o na le ts'ebetso e matla ea ho thibela oxidation, 'me o lokela ho sebelisoa khafetsa sepakapakeng se nang le oxidation le se sa sebetseng. Mocheso oa tšebeliso ea nako e telele ke 1000℃ le 1200 ℃ ea nako e khuts'oane. Ke oona o sebelisoang haholo har'a li-thermocouple tsohle; (o ke ke oa sebelisoa o fokotsang moea oa khase).
Thermocouple e Sebetsang le e Lekanyang Mocheso o Tekanyetsang:
| Thermocouple Material | Boemo ba mocheso o sebetsang le mamello | |||||
| Sehlopha sa I | Sehlopha sa II | |||||
| Index | Anode | Cathode | Ho lekanya bolelele ba nako | Mamello | Ho lekanya bolelele ba nako | Mamello |
| K | NiCr10 | NiAl2 | -40℃ -1000℃ | ±1.5℃ kapa ±0.4%*T | 40℃ -1200℃ | ±2.5℃ kapa 0.75%*T |
| T | Cu | CuNi40 | -40℃-350℃ | 40℃-350℃ | ±1℃ kapa 0.75%*T | |
| J | Fe | CuNi40 | -40℃-750℃ | 40℃ -750℃ | ±2.5℃ kapa 0.75%*T | |
| E | NiCr10 | CuNi45 | -40℃-800℃ | 40℃ -900℃ | ||
| N | NiCr14Si | NiSi4Mg | -40℃ -1000℃ | 40℃ -1200℃ | ±2.5℃ kapa 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℃ kapa 0.25%*T |
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