Cov kev siv tau thiab kev faib tawm ntawm cov khoom siv roj hauv kev sim huab cua
Nyob rau hauv cov huab cua kuaj gas detector siv txoj kev thiab kev faib Gas detector yuav ntes hydrogen sulfide, carbon monoxide, oxygen, sulfur dioxide, phosphine, ammonia, nitrogen dioxide, hydrogen cyanide, chlorine, chlorine dioxide, ozone thiab combustible gases thiab lwm yam gases, dav siv. hauv petrochemicals, thee, metallurgy, tshuaj lom neeg kev lag luam, cov pa roj hauv nroog, kev saib xyuas ib puag ncig, thiab lwm qhov chaw ntawm qhov chaw tshawb nrhiav. Nws tuaj yeem paub txog kev ntsuas qhov xav tau ntawm lub sijhawm tshwj xeeb; nws tuaj yeem ntes cov concentration lossis xau hauv qhov pits, pipelines, tso tsheb hlau luam, chaw kaw thiab lwm yam.
Kev ntsuas qhov nqus spectrum los txheeb xyuas hom roj; Kev ntsuas qhov nqus nqus los txiav txim siab qhov concentration ntawm cov pa ntsuas. Infrared detector ntawm kev siv ntau yam, tsis tsuas yog tuaj yeem txheeb xyuas cov roj muaj pes tsawg leeg, tab sis kuj tuaj yeem txheeb xyuas cov tshuaj muaj pes tsawg leeg, thiab siab rhiab heev, cov lus teb ceev ceev, tuaj yeem ua online txuas ntxiv, tuaj yeem tsim los ntawm kev tswj hwm. Kev tshawb nrhiav ib feem ntawm lub tshuab hluav taws xob infrared feem ntau siv hauv kev lag luam muaj ob sab-los-sab optical systems nrog tib cov qauv.
Ib qho yog lub ntsuas chamber thiab lwm qhov yog qhov siv chamber. Ob chav qhib thiab kaw txoj kev kho qhov muag ib txhij los yog hloov nrog ib lub sijhawm los ntawm kev siv lub teeb-txiav phaj. Thaum cov roj ntsuas tau nkag mus rau hauv lub ntsuas chamber, lub teeb nrog wavelengths tshwj xeeb rau cov ntsuas roj tau nqus, yog li txo cov luminous flux los ntawm txoj kev kho qhov muag ntawm lub ntsuas chamber rau hauv infrared tau txais roj chamber. Qhov siab dua cov roj concentration, qhov qis dua qhov luminous flux mus rau hauv infrared tau txais roj chamber; Thaum lub luminous flux los ntawm cov ntaub ntawv siv chamber yog qhov tseeb, qhov luminous flux mus rau hauv infrared tau txais roj chamber kuj yog qhov tseeb. Yog li ntawd, qhov siab dua qhov concentration ntawm cov roj ntsuas, qhov sib txawv ntawm cov luminous flux ntawm lub ntsuas chamber thiab cov ntaub ntawv siv chamber. Qhov sib txawv ntawm luminous flux yog npaj rau hauv infrared tau txais cov pa roj chamber nrog lub amplitude ntawm kev co ntawm ib lub sij hawm. Qhov tau txais roj chamber tau muab cais ua ob ntu los ntawm cov yeeb yaj kiab hlau ntau microns tuab, nyob rau hauv uas cov pa roj nrog cov ntsiab lus loj ntawm cov khoom ntsuas yuav raug kaw, thiab cov kab hluav taws xob infrared txhaj rau hauv lub chamber yog tag nrho absorbed nyob rau hauv lub nqus wavelength. , kom lub pulsating lub teeb flux hloov mus rau hauv lub voj voog hloov ntawm qhov kub thiab txias, thiab tom qab ntawd qhov kev hloov ntawm qhov kub thiab txias yog hloov mus rau hauv kev hloov ntawm lub siab raws li qhov sib npaug gaseous thiab kuaj pom los ntawm capacitive sensors, thiab tom qab ntawd cov concentration ntawm cov roj yuav tsum tau ntsuas. yog qhia los ntawm tus txheej txheem amplified. Ntxiv nrog rau cov capacitive sensors, kuj tseem siv tau ncaj qha mus ntes infrared quantum infrared sensors, thiab siv cov infrared cuam tshuam cov ntxaij lim dej rau wavelength xaiv thiab nrog adjustable lasers raws li lub teeb qhov chaw, tsim ib tug tshiab tag nrho cov khoom infrared gas detector. Hom kev ntsuas no tuaj yeem ua tiav qhov ntsuas ntawm cov roj concentration nrog tsuas yog ib lub teeb ci, ib lub ntsuas chamber thiab ib qho infrared sensor. Tsis tas li ntawd, yog siv ntau lub lim discs nrog cov wavelengths sib txawv, qhov concentration ntawm ntau yam gases nyob rau hauv multi-component gases tuaj yeem ntsuas ib txhij.
