Gas detectors yog dav siv nyob rau hauv kev lag luam ntau lawm
Daim ntawv thov tam sim no ntawm kev tshawb nrhiav roj siv thev naus laus zis tau dhau los ua qhov dav, tsis yog tsuas yog xav kom nws dhau los ntawm lwm cov khoom tshawb nrhiav hauv cov ntsiab lus ntawm cov thev naus laus zis, tab sis kuj maj mam dhau los ua qhov hnyav hauv kev siv thiab kev ua haujlwm. Portable gas detectors loj dhau thiab siv tsis yooj yim. Txhawm rau ua kom yooj yim txav tau yooj yim thiab siv, cov khoom siv hluav taws xob portable tau dhau los ua zoo meej. Portable gas detectors kuj tau muab faib ua ob hom: twj tso kua mis thiab diffusion.
Feem ntau cov sensors hauv gas detectors muaj lub neej kev pab, feem ntau hais lus, electrochemical sensors muaj lub neej ntawm ob mus rau peb lub xyoos, oxygen sensors muaj lifespan ntawm ib mus rau ob xyoos, catalytic combustion sensors muaj lifespan txog peb xyoos, thiab infrared/semiconductor. thiab photoionization sensors muaj lub neej ntev li ntawm peb mus rau tsib xyoos. Nyob rau tib lub sijhawm, cov kev txwv no tseem muaj feem cuam tshuam nrog kev siv ib puag ncig. Thaum siv nyob rau hauv ib puag ncig uas tsis tu ncua siab ib puag ncig los yog lub tswb nrov, lub neej ntawm lub sensor yuav luv luv rau qee yam.
Yog li ntawd, yog tias cov roj nrhiav kom tau ntau dua qhov yuav tsum tau muaj nyob rau hauv kev tsom xam, lossis yog tias cov ntaub ntawv muaj tseeb ntawm cov roj yuav tsum tau siv, cov cuab yeej ntsuas ntsuas yuav tsum tau siv. Muaj ntau cov cuab yeej tshuaj ntsuam xyuas siv rau kev ntsuas roj concentration, xws li Fourier hloov infrared gas chromatography thiab huab hwm coj spectrometry, uas tuaj yeem muab cov ntaub ntawv tseeb tshaj plaws thiab xaiv cov roj concentration, Tau kawg, vim tus nqi siab ntawm kev saib xyuas, lub sijhawm teb ntev, loj. ntim, cumbersome ua hauj lwm, thiab tsis muaj peev xwm kom raws sij hawm muaj kev cuam tshuam nyob rau ntawm qhov chaw concentration, cov khoom siv no tsis haum rau kev soj ntsuam roj ntawm qhov chaw. Lawv feem ntau yog siv los ua cov cuab yeej kuaj ntsuas roj, thiab cov ntaub ntawv tau txais los ntawm cov kev tshuaj ntsuam no tuaj yeem ua lub hauv paus rau kev ntsuas cov txiaj ntsig kev phom sij.
Txawm li cas los xij, cov cuab yeej siv tau zoo tshaj plaws thiab siv dav siv roj tseem ua lub luag haujlwm tseem ceeb hauv kev tsim khoom txhua hnub, kev tiv thaiv ib puag ncig, kev tiv thaiv kev ua haujlwm, thiab lwm yam. Tom qab siv cov txheej txheem tshuaj ntsuam xyuas kom tau txais qhov tseeb ntawm cov pa phem thiab cov pa phem hauv ib puag ncig, kev siv cov txheej txheem tshawb nrhiav ntawm qhov chaw tuaj yeem ua tiav lub hom phiaj ntawm kev tshawb pom sai ntawm qhov chaw. Yog li ntawd, nws tuaj yeem hais tau tias nws yog cov kev tshawb nrhiav yooj yim thiab txhim khu kev qha uas tuaj yeem ua kom pom cov roj concentration nkag mus rau ntau yam ntawm peb lub neej thiab kev ua haujlwm.
