Termokopel Tipe K Alumel / Chromel Rod / Stick / Bar 6mm 8mm 9mm 10mm 12mm
Termokopel Tipe K Alumel /Batang Krom/ Stik / Batang 6mm 8mm 9mm 10mm 12mm
TIPE K (CHROMEL vs ALUMEL) digunakake ing atmosfer oksidasi, inert, utawa reduksi garing. Iki kudu dilindhungi saka atmosfer sulfur lan oksidasi sing sithik. Iki bisa dipercaya lan nduweni akurasi sing dhuwur ing suhu dhuwur.
1.Bahan kimiaKomposisi
| Bahan | Komposisi kimia (%) | ||||
| Ni | Cr | Si | Mn | Al | |
| KP(Chromel) | 90 | 10 | |||
| KN(Alumel) | 95 | 1-2 | 0.5-1.5 | 1-1.5 | |
2.Sifat Fisik lan Sifat Mekanik
| Bahan |
Kapadhetan (g/cm3) | Titik leleh ℃) | Kekuwatan Tarik (Mpa) | Resistivitas volume (μΩ.cm) | Tingkat pemanjangan (%) |
| KP(Chromel) | 8.5 | 1427 | >490 | 70.6 (20℃) | >10 |
| KN(Alumel) | 8.6 | 1399 | >390 | 29.4 (20℃) | >15 |
3.Rentang Nilai EMF ing Suhu sing Beda
| Bahan | Nilai 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 |
| Nilai 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 |
| Varietas lan Indeks Termokopel | ||
| Macem-macem | Tipe | Rentang Pangukuran (°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 |
Aplikasi Batang Termokopel Tipe K KP Chromel KN Alumel 0,5″ 12,7mm
Ciri khas Tipe K yaiku nduweni kinerja anti-oksidasi sing kuwat, lan kudu digunakake terus-terusan ing atmosfer oksidasi lan inert. Suhu panggunaan jangka panjang yaiku 1000℃ lan jangka pendek 1200℃. Iki minangka termokopel sing paling akeh digunakake ing antarane kabeh termokopel; (ora bisa digunakake kanggo ngurangi atmosfer gas).
Cara Kerja lan Pangukuran Rentang Suhu Termokopel:
| Bahan Termokopel | Rentang suhu kerja lan Toleransi | |||||
| Kelas I | Kelas II | |||||
| Indeks | Anoda | Katoda | Pangukuran suhu | Toleransi | Pangukuran suhu | Toleransi |
| K | NiCr10 | NiAl2 | -40℃-1000℃ | ±1,5℃ utawa ±0,4%*T | 40℃-1200℃ | ±2,5℃ utawa 0,75%*T |
| T | Cu | CuNi40 | -40℃-350℃ | 40℃-350℃ | ±1℃ utawa 0,75%*T | |
| J | Fe | CuNi40 | -40℃-750℃ | 40℃-750℃ | ±2,5℃ utawa 0,75%*T | |
| E | NiCr10 | CuNi45 | -40℃-800℃ | 40℃-900℃ | ||
| N | NiCr14Si | NiSi4Mg | -40℃-1000℃ | 40℃-1200℃ | ±2,5℃ utawa 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℃ utawa 0,25%*T |
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