E masani ona faʻaaogaina le Type J Thermocouple ona o lona tau maualalo ma le maualuga o le EMF. E mafai ona faʻaaogaina i tulaga faʻa-oxidizing e oʻo atu i le 760°C. Mo vevela maualuluga, e fautuaina e faʻaaoga uaea tetele.
O le thermocouple ituaiga J e fetaui mo le fa'a'okeseneina, fa'aitiitia o le inert ea po'o le vacuum.
| Oloa | Fa'atulagaga Fa'akemikolo/% | Mafiafia (g/cm3) | Tulaga e liusuavai ai (ºC) | Tete'e (μΩ.cm) | Malosiaga o le Fetaia'i (Mpa) | |||
| Fe | Cu | Ni | ||||||
| U'amea Mama JP(+) | 100 | - | - | 7.8 | 1402 | 12 | ≥240 | |
| IA(-) Nikala Kopa | - | 55 | 45 | 8.8 | 1220 | 49 | ≥390 | |
2. Vevela sili ona maualuga o le fa'agaioiga
| Uaea u'amea Lapoa/mm | O le fa'agaioiga mo se taimi umi vevela/°C | O le fa'agaioiga i se taimi pu'upu'u vevela/°C |
| 0.3,0.5 | 300 | 400 |
| 0.8,1.0,1.2 | 400 | 500 |
| 1.6,2.0 | 500 | 600 |
| 2.5,3.2 | 600 | 750 |
| Fa'agaoioia vevela/°C | Tau fa'atatau o EMF fa'avevela eletise | Tulaga Muamua | |
| Onosa'i | Vaega o le EMF | ||
| 100 | 5 269 | ±82 | 5 187-5 351 |
| 200 | 10 779 | ±83 | 10 696-10 862 |
| 300 | 16 327 | ±83 | 16 244-16 410 |
| 400 | 21 848 | ±88 | 21 760-21 936 |
| 500 | 27 393 | ±112 | 27 281-27 505 |
| 600 | 33 102 | ±140 | 32 962-33 242 |
| 700 | 39 132 | ±174 | 38 958-39 306 |
| 750 | 42 281 | ±192 | 42 089-42 437 |
| 760 | 42 919 | ±194 | 42 725-43 113 |
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