Dab tsi yog lub hauv paus rau kev xaiv cov khoom siv roj av?
Kev faib tawm ntawm cov khoom siv hluav taws xob tau muab cais raws li cov khoom tshawb pom, suav nrog cov roj hluav taws xob (xws li methane) nrhiav kom pom thiab lub tswb nrov, cov khoom siv hluav taws xob muaj tshuaj lom thiab lub tswb, thiab cov khoom siv oxygen thiab lub tswb. Muab faib raws li txoj hauv kev tshawb nrhiav, kev tshawb nrhiav cov roj hluav taws xob muaj xws li catalytic combustion type, semiconductor type, thermal conductivity type thiab infrared absorption type, thiab lwm yam.; Kev kuaj pom cov pa lom muaj xws li hom electrochemical, hom semiconductor, thiab lwm yam .; oxygen nrhiav tau muaj xws li electrochemical hom, thiab lwm yam. Classified raws li txoj kev siv, muaj portable thiab ruaj. Muab faib raws li qhov chaw siv, muaj hom pa thiab tawg-pov thawj hom. Muab faib los ntawm kev ua haujlwm, muaj cov khoom siv roj av, lub tswb ntsuas roj thiab lub tswb ntsuas roj. Raws li txoj kev coj mus kuaj, muaj hom diffusion thiab twj tso kua mis hom.
Nyob rau hauv dav dav, industrial gas detectors muaj cov nram qab no zoo: haum rau real-time thiab meej nrhiav kom tau cov pa concentration thiab to nyob rau hauv ntau qhov chaw, siv imported catalytic combustion, atmospheric xyuas, electrochemical, thermal conductivity, laser, PID, infrared thiab lwm yam sensors thiab Microcontroller technology. Cov lus teb ceev ceev, siab ntsuas qhov tseeb, zoo stability thiab repeatability.
Lub neej kev pab cuam ntawm lub tshuab ntes roj feem ntau yog nyob ntawm nws cov khoom tseem ceeb -- lub sensor.
Peb kuj paub tias nws yog tsis yooj yim sua kom muaj ib tug sensor uas yuav ntes tau tag nrho cov gases thiab ua tau raws li tag nrho cov kev cai. Cov sensors siv nyob rau hauv ntau yam gases thiab ib puag ncig kuj txawv, uas yuav roughly muab faib mus rau hauv: sensors rau ntes cov concentration ntawm lom gases thiab sensors rau Sensors uas ntes explosive concentrations ntawm flammable gases.
Feem ntau ntawm cov sensors siv los ntsuas qhov concentration ntawm cov pa roj carbon monoxide yog electrochemical sensors, uas ua haujlwm raws li cov ntsiab lus ntawm electrochemical. Qhov tseem ceeb uas cuam tshuam rau lawv lub neej yog cov electrolyte. Tom qab 2 mus rau 3 xyoos rau cov sensors dav dav, cov electrolyte yuav tas. Nws ua hauj lwm ib txwm, yog li lub neej kev pab cuam ntawm lub electrochemical sensor yog 2 mus rau 3 xyoo.
Feem ntau ntawm cov sensors siv los txheeb xyuas qhov concentration ntawm cov pa roj carbon monoxide yog catalytic combustion sensors, thiab lawv lub neej kev pab yog 3 mus rau 5 xyoo.
Piv txwv li: carbon monoxide yog cov xim tsis muaj xim, tsis muaj ntxhiab, tsis muaj ntxhiab tsw nrog cov txheeb ze ntom ntom, me ntsis soluble hauv dej, thiab tuaj yeem hlawv. Thaum lub ntim concentration nce mus txog 13% ~ 75 feem pua, nws yuav tawg thaum ntsib qhov hluav taws kub. Cov pa roj carbon monoxide yog tshuaj lom heev. Lub affinity ntawm heme nyob rau hauv tib neeg cov ntshav rau cov pa roj carbon monoxide yog 250-300 zaug ntau dua nws affinity rau oxygen. Qib ntawm cov pa roj carbon monoxide lom muaj feem xyuam rau kev lom neeg concentration, lom cov xwm txheej, ua pa zaus thiab qhov tob, thiab tib neeg txoj cai. 50ppm: Cov ntsiab lus siab tshaj plaws tau tso cai rau cov neeg laus kom pom nws. 200ppm: Ob peb teev tom qab ntawd yuav muaj cov tsos mob lom me me xws li mob taub hau, lub plawv dhia, tinnitus. 400ppm: 2h tuaj yeem ua rau mob hauv pliaj, 3h tom qab ntawd yuav ua rau tuag taus. 800ppm: mob taub hau thiab xeev siab hauv 45 feeb, tuag hauv 2h-3h.
