Qhov cuam tshuam ntawm cov khoom emissivity ntawm pyrometer ntsuas kub
Yuav luag txhua yam khoom tiag tiag uas muaj nyob hauv qhov tsis yog lub cev dub. Tus nqi hluav taws xob tawm los ntawm tag nrho cov khoom tiag tiag nyob ntawm, ntxiv rau lub wavelength ntawm cov hluav taws xob hluav taws xob thiab qhov kub thiab txias ntawm cov khoom, ntawm cov khoom xws li hom khoom tsim los ntawm cov khoom, cov txheej txheem ntawm kev npaj, thermal txheej txheem thiab lub xeev. qhov chaw thiab ib puag ncig. Yog li ntawd, nyob rau hauv kev txiav txim rau Blackbody Laij Liaj cai lij choj raug thov rau txhua yam khoom tiag tiag, piv txwv li, lub xeev emissivity, yuav tsum tau qhia txog qhov chaw, yuav tsum tau qhia. Qhov coefficient no sawv cev rau qhov sib thooj ntawm cov hluav taws xob thermal ntawm ib yam khoom tiag tiag rau cov hluav taws xob ntawm lub cev, thiab nws cov nqi sib txawv ntawm xoom thiab tus nqi tsawg dua ib qho. Raws li txoj cai lij choj ntawm hluav taws xob, tsuav yog lub emissivity ntawm ib yam khoom yog paub, lub infrared radiation yam ntxwv ntawm ib yam khoom yog paub.
Cov yam tseem ceeb cuam tshuam rau emissivity yog: hom khoom, nto roughness, lub cev thiab tshuaj qauv thiab cov khoom thickness.
Thaum siv cov ntsuas hluav taws xob hluav taws xob infrared los ntsuas qhov ntsuas kub ntawm lub hom phiaj ua ntej ntsuas lub hom phiaj hauv nws qhov band ntau ntawm cov hluav taws xob infrared, thiab tom qab ntawd los ntawm tus pas ntsuas kub los ntsuas qhov ntsuas kub ntawm lub hom phiaj yuav ntsuas. Ib leeg-xim pyrometers yog proportional rau tus nqi hluav taws xob nyob rau hauv band; ob-xim pyrometers yog proportional rau qhov piv ntawm tus nqi hluav taws xob hauv ob pawg.
Infrared system: infrared tus pas ntsuas kub los ntawm qhov system kho qhov muag, photodetector, teeb liab amplifier thiab teeb liab ua, tso zis tso zis thiab lwm yam khoom. Optical system convergence ntawm nws daim teb ntawm kev pom ntawm lub hom phiaj infrared hluav taws xob hluav taws xob, qhov loj ntawm qhov chaw saib los ntawm tus pas ntsuas kub qhov muag qhov chaw thiab lawv qhov chaw los txiav txim. Lub zog infrared yog tsom rau lub photodetector thiab hloov mus rau hauv cov teeb liab hluav taws xob sib xws. Lub teeb liab yog hloov mus rau qhov kub ntawm lub hom phiaj tom qab dhau los ntawm lub amplifier thiab teeb liab ua circuitry thiab raug kho rau lub hom phiaj emissivity raws li algorithm thiab lub hom phiaj emissivity nyob rau hauv lub ntsuas.
