Waiwai Karma

4. ʻO nā hiʻohiʻona ʻokoʻa o ka uea kūʻē Karma

1) E hoʻomaka ana me ka uea wela uila Nickel Chromium Class 1, ua hoʻololi mākou i kekahi o ka Ni me
Al a me nā mea ʻē aʻe, a pēlā i loaʻa ai kahi mea kūʻē pololei me ka hoʻomaikaʻi
koena wela kū'ē a me ka ikaika electromotive wela i ke keleawe.
Me ka hoʻohui ʻana o Al, ua lanakila mākou i ka hana ʻana i ka resistivity volume 1.2 mau manawa ʻoi aku ka nui
ma mua o ka uea wela uila Nickel Chromium Class 1 a me ka ikaika tensile 1.3 manawa ʻoi aku ka nui.

2) He liʻiliʻi loa ka helu lua wela β o ka uea Karmalloy KMW, - 0.03 × 10-6/ K2, a ʻo ke ʻano o ka pale wela e huli a kokoke i kahi laina pololei i loko o kahi ākea.
pae wela.

No laila, ua hoʻonohonoho ʻia ka coefficient wela i ka ʻawelike wela ma waena
23 ~ 53 °C, akā, 1 × 10-6/K, ka awelika wela coefficient ma waena o 0 ~ 100 °C, hiki no hoi.
e aponoia no ke koena wela.

3) ʻO ka ikaika electromotive e kū'ē i ke keleawe ma waena o 1 ~ 100 °C he liʻiliʻi hoʻi, ma lalo o + 2 μV / K, a
hōʻike i ke kūpaʻa maikaʻi loa i kahi manawa o nā makahiki he nui.

4) Inā e hoʻohana ʻia kēia ma ke ʻano he mea kūʻē pololei, ʻo ka mālama wela wela haʻahaʻa
koi ʻia e hoʻopau i nā distortions e like me ka hihia o Manganin wire CMW.