Thermocouple Type K Alumel / Chromel Rod / Stick / Bar 6mm 8mm 9mm 10mm 12mm
Thermocouple Type K Alumel /Ndodo ya Chromel/ Ndodo / Mzere 6mm 8mm 9mm 10mm 12mm
Mtundu wa K (CHROMEL vs ALUMEL) umagwiritsidwa ntchito mumlengalenga wothira okosijeni, wosagwira ntchito kapena wouma. Uyenera kutetezedwa kumlengalenga wothira okosijeni ndi wothira okosijeni pang'ono. Ndi wodalirika ndipo uli ndi zolondola kwambiri pa kutentha kwambiri.
1.MankhwalaKapangidwe kake
| Zinthu Zofunika | Kapangidwe ka mankhwala (%) | ||||
| Ni | Cr | Si | Mn | Al | |
| KP(Chrome) | 90 | 10 | |||
| KN(Alumeli) | 95 | 1-2 | 0.5-1.5 | 1-1.5 | |
2.Katundu Wathupi ndi Katundu wa Makina
| Zinthu Zofunika |
Kachulukidwe (g/cm3) | Malo osungunuka ℃) | Mphamvu Yokoka (Mpa) | Kukana kwa voliyumu (μΩ.cm) | Kuchuluka kwa kutalika (%) |
| KP(Chrome) | 8.5 | 1427 | >490 | 70.6 (20℃) | >10 |
| KN(Alumeli) | 8.6 | 1399 | >390 | 29.4(20℃) | >15 |
3.Mtengo wa EMF pa Kutentha Kosiyana
| Zinthu Zofunika | Mtengo wa EMF Vs Pt(μV) | |||||
| 100℃ | 200℃ | 300℃ | 400℃ | 500℃ | 600℃ | |
| KP(Chrome) | 2816~2896 | 5938~6018 | 9298~9378 | 12729~12821 | 16156~16266 | 19532~19676 |
| KN(Alumeli) | 1218~1262 | 2140~2180 | 2849~2893 | 3600~3644 | 4403~4463 | 5271~5331 |
| Mtengo wa 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 |
| Mitundu ndi Chiyerekezo cha Thermocouple | ||
| Mitundu yosiyanasiyana | Mtundu | Mulingo Woyezera (°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
Khalidwe la Mtundu K ndilakuti uli ndi mphamvu yolimbana ndi okosijeni, ndipo uyenera kugwiritsidwa ntchito mosalekeza mumlengalenga wopanda okosijeni komanso wopanda mpweya. Kutentha kwa nthawi yayitali ndi 1000℃ ndipo kutentha kwa nthawi yochepa ndi 1200 ℃. Ndiwo womwe umagwiritsidwa ntchito kwambiri pakati pa ma thermocouple onse; (sungagwiritsidwe ntchito kuchepetsa mpweya).
Kuyeza ndi Kuyeza Kutentha kwa Thermocouple:
| Zinthu Zofunika pa Thermocouple | Kugwira ntchito kutentha kwapakati ndi kulekerera | |||||
| Kalasi Yoyamba | Kalasi Yachiwiri | |||||
| Mndandanda | Anode | Kathodi | Kuyeza mawu | Kuleza mtima | Kuyeza mawu | Kuleza mtima |
| K | NiCr10 | NiAl2 | -40℃ -1000℃ | ±1.5℃ kapena ±0.4%*T | 40℃ -1200℃ | ±2.5℃ kapena 0.75%*T |
| T | Cu | CuNi40 | -40℃ -350℃ | 40℃ -350℃ | ±1℃ kapena 0.75%*T | |
| J | Fe | CuNi40 | -40℃ -750℃ | 40℃ -750℃ | ±2.5℃ kapena 0.75%*T | |
| E | NiCr10 | CuNi45 | -40℃ -800℃ | 40℃ -900℃ | ||
| N | NiCr14Si | NiSi4Mg | -40℃ -1000℃ | 40℃ -1200℃ | ±2.5℃ kapena 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℃ kapena 0.25%*T |
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