Cov pa phem thiab cov pa phem yog qhov tseem ceeb tshaj plaws nyob rau hauv qhov tho qhov tsis zoo. Lawv feem ntau suav nrog methane, carbon monoxide, carbon dioxide, hydrogen sulfide, nitrogen thiab qee qhov sib txawv hnyav hydrocarbon thiab tus nqi tsawg ntawm cov pa roj.
Raws li cov khoom siv thev naus laus zis, cov pa lom uas muaj kuab lom thiab tsim kev puas tsuaj no tau muab faib ua ob pawg: cov roj sib kis thiab cov pa lom.
Raws li lawv cov txheej txheem sib txawv rau tib neeg lub cev, cov pa lom hauv lub qhov dej tau muab faib ua cov pa roj (chlorine, phosgene, diphosgene ozone, sulfur dioxide, nitrogen oxides, formaldehyde, ammonia,), asphyxiation (carbon monoxide, carbon dioxide, hydrogen sulfide , hydrogen cyanide acid) thiab mob siab rau cov pa roj (organic) (VOC) peb pawg.Nws tsim nyog hais tias feem ntau cov pa roj (organic) (VOC) yog ob qho tib si lom thiab nplaim taws, xws li n-hexane thiab dichloromethane.Qhov kev tshawb pom ntawm cov organic sib txuas tau feem ntau txhawm rau txhawm rau tshawb xyuas lawv cov khoom tawg, tab sis feem ntau yog cov ntau qhov qis dua qis dua cov khoom tawg (LEL) ntawm cov roj, nws lub cev muaj kuab lom tau ua rau muaj kev phom sij rau tib neeg lub cev. Yog li, txhawm rau kuaj pom cov organic sib txuas (VOC), peb yuav tsum xub ntsuas cov tshuaj lom thiab tom qab ntawd ntsuas qhov tawg.
Cov pa hluav taws nyob rau hauv qhov tsim muaj feem ntau yog cov pa methane (CH4) thiab qee cov kab mob hloov ua pa (VOC), uas yooj yim hlawv thiab txawm ua rau tawg thaum ntsib hluav taws, yog li ua rau kev puas tsuaj rau lub neej thiab vaj tse.
Tom qab paub txog cov roj muaj peev xwm nyob hauv tunnels, peb tuaj yeem xaiv yuav lub tshuab hluav taws xob kom haum.
Ua ntej peb yuav tsum txiav txim siab seb hom thiab kev tsom qib ntawm cov roj cua.Methane ua cov roj tseem ceeb hauv cov roj hauv qhov av, yog li yuav tsum muaj lub ntsuas hluav taws xob nrog cov pa roj cua pa roj carbon monoxide; ) thiab hydrogen sulfide (H2S) hauv qhov av, yog li lub ntsuas yuav tsum nrog cov pa roj carbon monoxide (CO) thiab cov tshuaj hydrogen sulfide (H2S ).Xav xav tias tej zaum yuav muaj cov organic lom thiab teeb meem roj (VOC), uas tej zaum yuav ua rau muaj tshuaj lom tsawg. , xws li muaj ntxhiab hydrocarbon, halogenated hydrocarbon, ammonia (amine), ether, cawv, ester, thiab lwm yam, nws pom zoo kom xaiv lub teeb ionization (PID) sensor.
Peb, Huafan Instrument Co, .Ltd muab cov roj ua kom paub cov kab ua kom zoo rau cov tunnels, metallurgy, tshuaj lom neeg kev lag luam, roj av, tshuaj, kev lag luam ib puag ncig thiab lwm yam. yog tias koj muaj kev xav tau, tsuas yog hu rau peb.