Kev xaiv ua haujlwm Wavelength rau Infrared Thermometer
Nyob rau hauv qhov xwm txheej, thaum qhov kub ntawm ib yam khoom siab tshaj li xoom xoom, vim muaj qhov muaj nyob hauv nws cov thermal zog, nws yuav txuas ntxiv hluav taws xob electromagnetic tsis mus rau ib puag ncig, suav nrog cov kab hluav taws xob infrared nrog ib pawg ntawm 0.{{ 1}} m os. Cov ntsuas kub infrared siv ua raws li txoj cai no.
Lub wavelength ntau ntawm pom lub teeb yog {{0}}.38 txog 0.78 microns, thiab kev ua hauj lwm wavelength ntawm industrial infrared ntsuas kub yog nyob rau hauv thaj tsam ntawm 0.65 mus rau 14 microns.
Kev xaiv ua haujlwm Wavelength rau Infrared Thermometer
Xaiv qhov ua haujlwm wavelength / ua haujlwm ntawm lub ntsuas hluav taws xob infrared yog thawj qhov teeb meem uas tus tsim ntsuas ntsuas yuav tsum xav txog. Muaj ntau qhov laj thawj rau xaiv qhov ua haujlwm wavelength.
● Txiav txim siab qhov ua haujlwm wavelength raws li qhov ntsuas qhov ntsuas kub
Planck txoj cai hluav taws xob qhia tau hais tias rau ib qho khoom ze ntawm lub cev dub, qhov kub thiab txias, qhov ntau dua lub zog hluav taws xob, thiab lub ncov wavelength txav mus rau qhov kev taw qhia luv luv thaum qhov kub nce. Yog li ntawd, los ntawm qhov kev xav ntawm kev siv lub zog, cov nthwv dej luv luv feem ntau yog siv rau kev ntsuas kub, cov nthwv dej ntev yog siv rau qhov ntsuas kub tsawg, thiab qhov ntsuas kub nruab nrab yog nyob nruab nrab.
● Txiav txim siab qhov ua haujlwm wavelength raws li qhov emissivity ntawm cov khoom
Feem ntau hais lus, cov khoom yuav tsum ntsuas yog ntau yam. Nws yog tsis yooj yim sua rau tus pas ntsuas kub kom ua tau raws li qhov yuav tsum tau ntawm ntau yam khoom ntsuas tib lub sijhawm. Rau cov khoom uas tsis yog lub cev dub lossis lub cev grey, kev xaiv ntawm kev ua haujlwm wavelength tsis tuaj yeem txiav txim siab tsuas yog raws li kev ntsuas ntau, tab sis feem ntau raws li kev hloov pauv ntawm emissivity ntawm cov khoom ntsuas nrog wavelength.
● Txiav txim siab qhov ua haujlwm wavelength raws li kev sib kis ntawm huab cua
Lub ntsuas hluav taws xob hluav taws xob infrared tau txais lub zog hluav taws xob ntawm cov khoom los ntsuas thiab dhau los ntawm qhov chaw nruab nrab. Txhawm rau txo qhov cuam tshuam ntawm atmospheric absorption ntawm kev ntsuas qhov tshwm sim, ntxiv rau kev xav txog cov ntsiab lus saum toj no thaum xaiv qhov ua haujlwm wavelength, kuj tseem yuav tsum tau them nyiaj rau kev xaiv qee lub qhov rais uas cov huab cua xa hluav taws xob. Qhov hu ua atmospheric transmission window tsis yog qhov tsis nqus, thiab qhov kev xa tawm yuav txo qis thaum qhov kev ncua deb nce. Tau kawg, qhov kev ncua deb tau hais ntawm no yog ntau pua meters. Raws li qhov deb ntawm ob peb meters, nws yuav tsis muaj kev cuam tshuam loj; lub qhov rais atmospheric hais ntawm no yog Nws txhais tau hais tias cov huab cua tsis muaj dej vapor ntau, pa taws thiab hmoov av.
Xaiv qhov ua haujlwm wavelength ntawm lub ntsuas hluav taws xob infrared, yooj yim hais, siv {{0}} rau qhov kub thiab txias, thiab 0.8-1.0 μm rau qhov kub thiab txias. Lwm qhov chaw kub tuaj yeem xaiv 1.6μm, 2.2μm thiab 3.9μm. Txij li qee cov ntaub ntawv yog pob tshab ntawm qee qhov wavelength, lub zog infrared yuav nkag mus rau cov ntaub ntawv no, thiab yuav tsum xaiv lub wavelength tshwj xeeb rau cov khoom no.
