Thermocouple Type K Alumel / Chromel Rod / Stick / Bar 6mm 8mm 9mm 10mm 12mm
Termokopel Tipe K Alumel /Rod Chromel Kab/ Kelet / Bar 6mm 8mm 9mm 10mm 12mm
TYPE K (CHROMEL vs ALUMEL) digunakake ing oksidasi, inert utawa garing reducing atmosfer. Sampeyan kudu dilindhungi saka atmosfer sulfur lan oksidasi sing sithik. Iku dipercaya lan nduweni akurasi dhuwur ing suhu dhuwur.
1.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.Sipat Fisik lan Sipat Mekanik
| Bahan |
Kapadhetan (g/cm3) | Titik lebur ℃) | Kekuwatan Tarik (Mpa) | Resistivitas volume (μΩ.cm) | Tingkat elongasi (%) |
| 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 | Jinis | Range Pengukuran (°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 Tipe K Rod Aplikasi
Karakteristik Tipe K yaiku nduweni kinerja anti-oksidasi sing kuat, lan kudu digunakake terus-terusan ing atmosfer oksidasi lan inert. Suhu panggunaan jangka panjang yaiku 1000 ℃ lan jangka pendek 1200 ℃. Iku sing paling akeh digunakake ing antarane kabeh thermocouple; (ora bisa digunakake ngurangi atmosfer gas).
Thermocouple Working and Measuring Suhu Range:
| Bahan Termokopel | Suhu kerja Range 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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