Deg emissivity ntawm infrared thermometers
Txhua qhov ntsuas ntsuas ntsuas ntsuas qhov ntsuas kub tau cov ntaub ntawv kub los ntawm kev ntsuas hluav taws xob hluav taws xob hauv lub zog ntawm cov khoom hluav taws xob. Thiab nyob rau hauv cov ntaub ntawv uas cov kev ntsuas kuaj mob infrarosticate tau txais tib lub zog hluav taws xob ntawm lub hom phiaj, yuav tau txais cov txiaj ntsig sib txawv vim yog lub hom phiaj. Uas yog hais, nrog tib lub hluav taws xob hluav taws xob, qis dua emissivity, qhov siab dua qhov ntsuas kub. Lub emissivity ntawm ib qho khoom nto yog tsuas yog txiav txim siab los ntawm nws cov khoom siv thiab lub xeev thiab cov khoom siv nteg, ntxhib, thiab paug cov xwm txheej). Yog li ntawd, txhawm rau kom raug ntsuas ntsuas qhov ntsuas hluav taws xob siv cov khoom siv ntsuas hluav taws xob, nws yog qhov yuav tsum tau kho qhov ntsuas kub ntawm qhov ntsuas kub thiab txias, txhawm rau kho qhov ntsuas kub Ob qho kev ntsuas lwm yam kev ntsuas kom tshem tawm cov kev cuam tshuam ntawm kev ntsuas cov khoom siv hluav taws xob tau raug kho, kom tau txais kev ntsuas kub tsis sib haum xeeb thiab txhim kho kev ntseeg tau ntawm kev pom; Rau cov khoom siv sib xyaw nrog cov tsis muaj peev xwm hauv infrared nrhiav tau, txhawm rau kom muaj qhov ntsuas kom zoo, txhawm rau kom tau txais qhov tseeb kub ntawm cov khoom siv sim.
Txoj kab nqes yog qhov sib piv ntawm emissivity hauv mohochrome kub ntsuas hom kev ntsuas kub hauv lub ntsuas kub hauv lub xim ntsuas kub. Vim tias qhov tsis muaj peev xwm los kho cov emissivy hom barpowand, nws tau suav los ntawm faib cov monochromatic broadband emissivity los ntawm tus nqi nqes hav.
Yog tias koj xav tau them sai sai rau qhov cub tawg, kho txoj kab nqes thiab dav emissivy kom ua rau cov nqaim emissivand emissivy ntau dua 1.00 (lossis tsawg dua 0,1).
Emissivity yog ib qho kev ntsuas ntawm ib qho khoom muaj peev xwm emit infrored hluav taws xob. Tus nqi no tuaj yeem yog los ntawm 0 (daim iav) rau 1.0 (Blackbody). Yog tias txoj kev teeb tsa emissivity yog ntau dua li qhov tseeb emissivity, kev nyeem ntawm lub taub hau sensor yuav qis dua. Piv txwv li, yog tias qhov tseeb emissity ntawm ib qho khoom yog 0.9 thiab cov nqi tsim yog 0.95, ntsuas ntsuas kub yuav qis dua.
