Feem ntau siv cov thermocouple nyob rau hauv cov txheej txheem ntawm kev ntsuas kub yog K-hom thermocouple, uas yog welded ntawm ib kawg ntawm ob conductors nrog npib tsib xee-chromium alloy raws li qhov zoo electrode thiab nickel-silicon alloy raws li qhov tsis zoo electrode. Qhov kawg vuam ntawm ob lub conductors yog hu ua kub electrode ntawm K-hom thermocouple. Qhov kawg vuam yog qhov kub kawg thiab qhov tsis vuam kawg yog qhov txias kawg. Thaum ntsuas qhov kub thiab txias, ntxig cov thermocouple rau hauv qhov ntsuas nruab nrab, ua kom qhov kub ntawm qhov ntsuas kub ntawm qhov nruab nrab ntsuas, tso qhov txias kawg ntawm qhov ntsuas kub tsis tu ncua, thiab txuas cov ntsuas hluav taws xob nrog cov khoom sib txuas. Vim qhov kub sib txawv ntawm ob qhov kawg ntawm lub thermocouple, lub peev xwm thermoelectric yuav raug tsim nyob rau hauv lub thermocouple circuit. Thaum ua kom qhov kub thiab txias ntawm qhov sib txuas ntawm cov thermocouple tsis tu ncua, lub peev xwm thermoelectric tsim los ntawm cov thermocouple tsuas yog hloov nrog qhov kub ntawm nws qhov sib txuas kub. Yog li ntawd, tom qab ntsuas tus nqi ntawm cov khoom siv hluav taws xob nrog lub ntsuas hluav taws xob, qhov ntsuas kub sib xws tuaj yeem tau txais.
K-hom thermocouple ntsuas qhov ntsuas qhov ntsuas:
Lub hauv paus ntsiab lus ntawm K-hom thermocouples yog siv los ua qhov ntsuas kub ntawm qhov ntsuas kub yog qhov tshwm sim thermoelectric tshwm sim los ntawm Seebeck hauv xyoo 1821. Ntawd yog: thaum ob qhov sib txawv conductors lossis semiconductors txuas rau hauv lub voj kaw, yog tias qhov kub ntawm cov junctions ntawm. ob qho tib si xaus sib txawv, ib qho tam sim no yuav raug tsim nyob rau hauv lub voj, uas qhia tau hais tias muaj ib tug electromotive quab yuam nyob rau hauv lub voj. Qhov tshwm sim ntawm lub cev no yog hu ua cov nyhuv thermoelectric lossis Seebeck effect, thiab cov khoom siv hluav taws xob sib raug hu ua Seebeck thermoelectric peev xwm, lossis lub peev xwm thermoelectric luv luv.
