Cov lus qhia ntxaws ntxaws rau K-hom thermocouples

K-hom thermocouple, raws li qhov ntsuas kub, feem ntau yog siv ua ke nrog cov cuab yeej tso saib, cov cuab yeej kaw, thiab cov tswj hluav taws xob. Nws tuaj yeem ntsuas qhov kub thiab txias ntawm cov kua vapor, cov pa tawm, thiab cov khoom khib nyiab hauv ntau cov txheej txheem tsim tawm los ntawm 0 degree mus rau 1300 degree .
K-hom thermocouples feem ntau muaj cov khoom tseem ceeb xws li ntsuas qhov ntsuas kub, kev teeb tsa, thiab cov thawv sib txuas. Nws yog tam sim no qhov loj tshaj plaws kev siv ntawm pheej yig hlau thermocouples, nrog rau tag nrho kev siv ntawm lwm yam thermocouples. Txoj kab uas hla ntawm K-hom thermocouple hlau feem ntau yog 1.2-4.0mm. Cov tshuaj nominal muaj pes tsawg leeg ntawm qhov zoo electrode (KP) yog Ni: Cr=92: 12, thiab cov nominal tshuaj muaj pes tsawg leeg ntawm cov electrode tsis zoo (KN) yog Ni: Si =99: 3, nrog rau kev siv kub ntawm -200 ~ 1300 degree .
K-hom thermocouples muaj qhov zoo ntawm qhov zoo linearity, loj thermoelectric electromotive quab yuam, siab rhiab heev, zoo stability thiab uniformity, muaj zog antioxidant kev ua tau zoo, thiab tus nqi qis. Lawv tuaj yeem siv dav hauv oxidizing inert cua thiab tau siv dav los ntawm cov neeg siv. Nws tsis tuaj yeem siv ncaj qha rau leej faj, txo lossis txo qis, oxidizing alternating atmospheres thiab lub tshuab nqus tsev ntawm qhov kub thiab txias, thiab tsis pom zoo rau cov cua tsis muaj zog oxidizing.
Cov yam ntxwv ntawm K-hom thermocouples
1. Thermocouple yog ib qho ntawm cov khoom siv ntsuas kub tshaj plaws hauv kev lag luam. Nws yuav tsum tau nruab nrog ib tug thib ob ntsuas, thiab nws zoo yog:
① Kev ntsuas qhov tseeb. Vim yog kev sib cuag ncaj qha ntawm cov thermocouple thiab cov khoom ntsuas, nws tsis cuam tshuam los ntawm qhov nruab nrab nruab nrab.
② Kev ntsuas dav dav. Feem ntau cov thermocouples tuaj yeem ntsuas tsis tu ncua los ntawm -50 mus rau +1600 degree, thaum qee qhov tshwj xeeb thermocouples tuaj yeem ntsuas qhov ntsuas kub qis li -269 degree (xws li kub hlau nickel chromium) thiab mus txog {{3} } degree (xws li tungsten rhenium).
③ Kev tsim kho yooj yim thiab siv tau yooj yim. Thermocouples feem ntau yog tsim los ntawm ob hom hlau hlau, thiab tsis txwv los ntawm qhov loj lossis pib. Lawv muaj lub tes tsho tiv thaiv sab nraud, ua rau lawv yooj yim heev rau siv.
2. Xaiv cov thermocouples nrog cov lej kawm tiav raws li qhov ntsuas kub thiab qhov tseeb
Thaum qhov kev khiav hauj lwm kub yog nyob nruab nrab ntawm 1300 ~ 1800 degree thiab siab raug, B-hom thermocouples feem ntau xaiv; Tsawg precision yog yuav tsum tau, thiab cov cua tso cai rau siv tungsten rhenium thermocouples. Feem ntau, tungsten rhenium thermocouples yog siv rau qhov kub siab tshaj 1800 degree; Kev siv qhov kub ntawm 1000 ~ 1300 degree yuav tsum muaj qhov raug siab thiab tuaj yeem ua tiav nrog S-hom thermocouples thiab N-hom thermocouples; K-hom thiab N-hom thermocouples feem ntau siv qis dua 1000 degree, thiab E-hom thermocouples feem ntau siv qis dua 400 degree; Ntawm 250 degree thiab ntsuas kub tsis zoo, T-hom thermocouples feem ntau yog siv. Ntawm qhov kub thiab txias, T-hom thermocouples ruaj khov thiab muaj qhov tseeb.