Thermocouple ea Mofuta oa J e sebelisoa khafetsa ka lebaka la theko ea eona e tlase le EMF e phahameng. E ka sebelisoa maemong a oxidizing ho fihlela ho 760°C. Bakeng sa mocheso o phahameng, ho khothaletsoa ho sebelisa bophara bo boholo ba terata.
Thermocouple ea Mofuta oa J e loketse ho oxidiza, ho fokotsa sepakapaka se sa sebetseng kapa vacuum.
| Sehlahisoa | Sebopeho sa Lik'hemik'hale/% | Botenya (g/cm3) | Sebaka sa ho qhibiliha (ºC) | Ho hanyetsa (μΩ.cm) | Matla a tšepe (Mpa) | |||
| Fe | Cu | Ni | ||||||
| JP(+) Tšepe e Hloekileng | 100 | - | - | 7.8 | 1402 | 12 | ≥240 | |
| JN(-) Nickel ea Koporo | - | 55 | 45 | 8.8 | 1220 | 49 | ≥390 | |
2.Mocheso o phahameng oa ts'ebetso
| Terata ea motsoako Bophara/mm | Ts'ebetso ea nako e telele mocheso/°C | Ts'ebetso ea nako e khuts'oane mocheso/°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 |
| Ho sebetsa mocheso/°C | Boleng bo tloaelehileng ba EMF ea thermoelectric | Boemo ba I | |
| Mamello | Mefuta ea 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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