Thermocouple Karazana K Alumel / Chromel Rod / Stick / Bar 6mm 8mm 9mm 10mm 12mm
Thermocouple Karazana K Alumel /Tehina Krômela/ Hazokely / Bara 6mm 8mm 9mm 10mm 12mm
Ny KARAZANA K (CHROMEL vs ALUMEL) dia ampiasaina amin'ny atmosfera misy oksidasiona, tsy mihetsika na mihena maina. Tsy maintsy arovana amin'ny atmosfera misy solifara sy oksidasiona kely izy io. Azo ianteherana izy io ary manana fahamarinan-toerana avo lenta amin'ny mari-pana avo.
1.simikafifehezan
| KEVITRA | Firafitra simika (%) | ||||
| Ni | Cr | Si | Mn | Al | |
| KP(Chromel) | 90 | 10 | |||
| KN(Alumel) | 95 | 1-2 | 0.5-1.5 | 1-1.5 | |
2.Toetra ara-batana sy toetra mekanika
| KEVITRA |
Hakitroky (g/sm)3) | Teboka fandrendrehana ℃) | Tanjaky ny fihenjanana (Mpa) | Fanoherana ny volume (μΩ.cm) | Taham-pahalavana (%) |
| KP(Chromel) | 8.5 | 1427 | >490 | 70.6 (20℃) | >10 |
| KN(Alumel) | 8.6 | 1399 | >390 | 29.4 (20℃) | >15 |
3.EMF amin'ny mari-pana samihafa
| KEVITRA | Sanda 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 |
| Sanda 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 |
| Karazana sy Indeksin'ny Thermocouple | ||
| Isan-karazany | Karazana | Fandrefesana elanelana (°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 |
Fampiasana ny tsorakazo Thermocouple Karazana K KP Chromel KN Alumel 0.5″ 12.7mm
Ny toetra mampiavaka ny karazana K dia ny fananany fanoherana ny oksizenina matanjaka, ary tokony hampiasaina tsy tapaka ao anaty atmosfera oksizenina sy tsy mihetsika. Ny mari-pana maharitra ampiasaina dia 1000℃ ary ny fohy ampiasaina dia 1200℃. Izy no be mpampiasa indrindra amin'ireo thermocouples rehetra; (tsy azo ampiasaina amin'ny atmosfera entona mampihena).
Fiasa sy fandrefesana ny mari-pana amin'ny Thermocouple:
| Akora Thermocouple | Fiasa mari-pana isan-karazany sy ny fandeferana | |||||
| Kilasy I | Kilasy II | |||||
| Fanondroana | Anoda | Katoda | Fandrefesana ny mari-pana | Fandeferana | Fandrefesana ny mari-pana | Fandeferana |
| K | NiCr10 | NiAl2 | -40℃-1000℃ | ±1.5℃ na ±0.4%*T | 40℃-1200℃ | ±2.5℃ na 0.75%*T |
| T | Cu | CuNi40 | -40℃-350℃ | 40℃-350℃ | ±1℃ na 0.75%*T | |
| J | Fe | CuNi40 | -40℃-750℃ | 40℃-750℃ | ±2.5℃ na 0.75%*T | |
| E | NiCr10 | CuNi45 | -40℃-800℃ | 40℃-900℃ | ||
| N | NiCr14Si | NiSi4Mg | -40℃-1000℃ | 40℃-1200℃ | ±2.5℃ na 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℃ na 0.25%*T |
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