ʻAno Kiʻekiʻe K Thermocouple Alloy Uea 0.5mm KP KN Uea

Hiki i ke uwea Thermocouple ke ana i ka elepona. ʻO kahi hana thermocouple maʻamau he mau metala like ʻole i hoʻohui ʻia me ka uila ma kahi kikoʻī a hoʻopili ʻia i kahi mea ana uila ma kekahi ʻaoʻao. Ke ʻoi aku ka wela o kekahi hui ma mua o kekahi, hoʻopuka ʻia ka ikaika "electromotive" wela (i nā millivolts) i kūlike me ka ʻokoʻa o ka wela ma waena o nā hui wela a me ke anu.

NiCr-NiSi (Ke ʻano K)uwea thermocoupleʻike i ka hoʻohana ākea loa i nā thermocouple basemetal āpau, ma ka mahana ma luna o 500 °C.
ʻAno Kuwea thermocoupleHe kū'ē ikaika i ka oxidation ma mua o nā thermocouple metala kumu ʻē aʻe. Loaʻa iā ia ka EMF kiʻekiʻe e kū'ē i ka Platinum 67, ka pololei o ka wela, ka naʻau a me ke kūpaʻa, me ke kumu kūʻai haʻahaʻa. Manaʻo ʻia no ka oxidizing a inert atmospheres, akā ʻaʻole hiki ke hoʻohana pololei ʻia i kēia mau hihia:
(1) Hoʻoemi a hoʻemi i ka lewa.
(2) Ka lewa me nā kinoea sulfur.
(3) He manawa lōʻihi i loko o ka hakahaka.
(4) Haʻahaʻa oxidizing ea e like me ka hydrogen a me carbon monoxide ea.
ʻĀpana kikoʻī
Hoʻohui Kimia no ka uwea thermocouple