Cov txheej txheem siv los txheeb xyuas cov pa phem thiab tsis muaj pa phem
Thaum kuaj xyuas cov pa roj carbon monoxide, peb kuj muaj ntau yam kev tshawb nrhiav roj av xaiv los ntawm. Tam sim no, tsis muaj kev siv tshuab uas tuaj yeem ua tau sai, pheej yig, thiab daws tau qhov teeb meem ntawm kev kuaj xyuas cov pa phem tshwj xeeb. Yog li ntawd, thaum xaiv txoj kev nrhiav kom tau cov pa uas tsim nyog, peb kuj yuav tsum xav txog thiab coj mus rau hauv tus account ntau yam.
1. Colorimetric raj ntsuas tshuab
Ntxiv nrog rau kev siv cov khoom siv tshuaj lom neeg, cov cuab yeej siv hluav taws xob colorimetric tube tam sim no tseem siv los ua ib txoj hauv kev nrhiav kom tau cov pa phem thiab cov pa phem hauv kev tiv thaiv ib puag ncig. Qhov txiaj ntsig loj tshaj plaws ntawm txoj kev ntsuas no raws li tshuaj lom neeg cov tshuaj tiv thaiv yog tias nws tuaj yeem them nyiaj rau qhov tsis muaj qhov tsim nyog nrhiav pom tau ntsib thaum ntsuas.
2. Electrochemical sensor
Electrochemical sensors yog ib qho kev tshawb nrhiav pom tau zoo thiab paub tab tam sim no siv nyob rau hauv portable gas detectors txhawm rau txheeb xyuas cov pa phem thiab cov pa phem. Cov yam ntxwv ntawm electrochemical sensors yog me me, tsawg zog noj, zoo linearity thiab repeatability, thiab ntev lifespan.
3. Semiconductor sensors
Semiconductor sensors yog cov khoom tshawb nrhiav ua los ntawm cov hlau oxides lossis cov khoom uas ua hlau semiconductor oxides. Lawv tuaj yeem tsim qhov adsorption los yog cov tshuaj tiv thaiv thaum cuam tshuam nrog cov pa roj, ua rau muaj kev hloov pauv hauv cov khoom siv hluav taws xob, cov yam ntxwv ntawm cov volt ampere, lossis cov peev txheej saum npoo uas ua rau muaj kev txav mus los. Nws tuaj yeem siv los txheeb xyuas cov pa roj carbon monoxide ntawm qhov feem pua ntawm qhov siab, nrog rau cov pa roj carbon monoxide ntawm qib ppm.
4. Ionization ntes
Cov ionization detectors tam sim no muaj nyob rau hauv kev ua lag luam tau muab faib ua photoionization detectors (PID) thiab nplaim ionization detectors (FID), uas yog feem ntau siv cov pa roj detectors rau roj theem detectors. Sib cais ob lub sensors rau hauv cov twj paj nruag tau dhau los ua ib txoj hauv kev tshawb nrhiav kom pom cov organic tebchaw tsis zoo.
