Dab tsi yog qhov txawv ntawm hom K thiab hom J thermocouples

Qhov sib txawv tseem ceeb ntawm Hom K thiab Hom J thermocouples qhov chaw ntawm cov khoom muaj pes tsawg leeg, qhov kub thiab txias, rhiab heev, ib puag ncig adaptability, thiab tus nqi. Hom K (nickel-chromium/nickel-alumel) muaj ntau yam dav (-200℃rau +1260} degree), superior oxidation kuj, thiab zoo stability nyob rau hauv oxidizing atmospheres, ua rau nws zoo tagnrho rau siab -kub industrial siv xws li cub tawg thiab reactors. Hom J (hlau / constantan), uas tsis tshua muaj nqi, ua tau zoo hauv nruab nrab - rau qis- qhov kub thiab txias txo qhov cua (txog +760 degree) tab sis raug oxidation ceev tshaj 540℃thiab tsis tsim nyog rau high-kub oxidizing ib puag ncig.

 

I. Kev sib piv ntawm Core Parameters

Yam khoom K-hom thermocouple J-hom thermocouple

Index Number KJ

Cov khoom siv hluav taws xob zoo Nickel-chromium alloy (Ni: Cr=90}: 10) Ntshiab hlau (Fe)

Cov khoom siv hluav taws xob tsis zoo Nickel-silicon alloy (Ni: Si=97}: 3) tooj liab-nickel alloy (constantan, 55% Cu + 45% Ni)

Qhov kub thiab txias -200℃~ 1300℃(siv mus ntev Tsawg dua lossis sib npaug li 1200 degree) -210℃~ 1200 degree, feem ntau siv 0 ~ 750 degree

Thermoelectric Potential (Sensitivity) Kwv yees li . 41 μV /℃Kwv yees . 50 μV / degree, siab dua K- hom

Linearity Zoo, ze rau linear Zoo linearity nyob rau hauv 0 ~ 750℃ntau

Tus nqi nruab nrab mus rau qis qis, belongs rau pheej yig hlau thermocouples

 

II. Qhov sib txawv hauv Kev Siv Ib puag ncig

Hom K thermocouple: Daim ntawv thov kev lag luam tseem ceeb, tiv taus siab -kub oxidation.

Ib puag ncig zoo: Oxidizing lossis inert atmospheres (piv txwv li, huab cua, nitrogen); Haum rau nruab nrab - txog - qhov ntsuas kub ntsuas kub xws li siab - qhov cub kub, qhov cub, thiab cov khoom siv fais fab.

Ib puag ncig tsis haum: Sulfur- muaj cov huab cua (piv txwv li, SO₂, H₂S) → Ua rau "ntsuab corrosion"; Kev txo qis los yog lub tshuab nqus tsev ib puag ncig → Ua rau cov khoom degradation thiab shortened lifespan.

Hom J thermocouple: Nyiam rau nruab nrab - mus rau - qhov kub thiab txias, tiv thaiv kom tsis txhob muaj roj.

Ib puag ncig zoo: Txo cov huab cua (xws li hydrogen, carbon monoxide) → Superior rau Hom K; Kuj tseem siv tau rau hauv lub tshuab nqus tsev thiab inert gas ib puag ncig; Feem ntau siv nyob rau hauv cov roj refining, tshuaj, thiab lwm yam ib puag ncig nrog txo gases.

Unsuitable environments: High-temperature oxidizing environments (>750 degree) → Hlau yog yooj yim oxidized, drastic txo lifespan; Sulfur-muaj cov huab cua → Constantan ntawm qhov tsis zoo electrode yog yooj yim corroded.

 

III. Cov lus pom zoo rau kev xaiv siv tswv yim

Daim ntawv thov Scenario	Hom kev pom zoo	Yog vim li cas
Steel Smelting, iav rauv	K- hom	Dav kub ntau, muaj zog oxidation kuj
Chemical Reactors (muaj H₂ / CO)	J-type	Resistant kom txo cov roj corrosion, zoo stability
General Industrial Medium Temperature Measurement (<750℃)	J-type	Tus nqi qis, siab rhiab heev, kev ua haujlwm zoo heev
Requires Long-Term High-Temperature Operation (>800 degree)	K- hom	J- hom hlau electrodes tau yooj yim oxidized ntawm qhov kub thiab txias, tsis tsim nyog rau kev siv tas mus li

 

IV. Yuav ua li cas paub qhov txawv ntawm K-hom thiab J- hom

Xim Marking (Feem ntau pom ntawm cov txheej rwb thaiv tsev):

K- hom: Qhov zoo electrode feem ntau yog grey, tsis zoo electrode yog liab lossis dawb;

J- hom: Qhov zoo electrode yog dub, tsis zoo electrode yog liab.

Ntsuas Millivolt Tus Nqi:

Ntawm 100℃, K- hom outputs kwv yees li 4.096 mV, J- hom kwv yees li 5.268 mV. Multimeter tuaj yeem siv rau kev txiav txim siab ua ntej.

Kos npe daim npav lossis qauv cim:

Kev cim kom meej nrog "K" lossis "J" tus lej kawm tiav yog txoj kev txheeb xyuas qhov tseeb tshaj plaws.