Yuav kawm sai npaum li cas los xaiv lub ntsuas roj
Rau ntau lub sijhawm tsim khoom thiab kev kuaj xyuas qhov xav tau, xaiv lub ntsuas roj tsim nyog yog ib yam uas txhua tus neeg koom nrog kev nyab xeeb thiab kev noj qab haus huv yuav tsum tau ua tib zoo saib xyuas.
Paub meej tias hom thiab concentration ntau ntawm cov pa yuav raug kuaj pom:
Cov hom gases ntsib nyob rau hauv txhua lub chaw tsim khoom yog txawv. Thaum xaiv lub ntsuas roj nws yog ib qho tseem ceeb uas yuav tau xav txog txhua yam tshwm sim.
ib. Yog tias feem ntau muaj methane thiab lwm yam tshuaj lom alkanes tsawg dua, nws yog qhov tsim nyog xaiv qhov ntsuas LEL. Qhov no tsis yog tsuas yog vim LEL detector muaj lub hauv paus ntsiab lus yooj yim thiab siv dav, tab sis nws kuj muaj cov yam ntxwv ntawm kev saib xyuas yooj yim thiab ntsuas.
b. Yog tias muaj cov pa phem xws li cov pa roj carbon monoxide thiab hydrogen sulfide, yuav tsum tau xaiv lub ntsuas roj tshwj xeeb ua ntej kom muaj kev nyab xeeb ntawm cov neeg ua haujlwm.
c. Yog hais tias muaj ntau cov organic toxic thiab teeb meem gases, xav tias cov concentration uas yuav ua rau tib neeg lom yog tsawg, xws li aromatic hydrocarbons, halogenated hydrocarbons, ammonia (amines), ethers, alcohols, lipids, thiab lwm yam. hauv tshooj dhau los. Tsis txhob tiv nrog photoionization detectors siv LEL detectors vim qhov no yuav ua rau raug mob.
Yog hais tias cov roj hom npog cov saum toj no pawg ntawm gases, xaiv ib tug composite gas detector yuav ua tau ob zaug qhov tshwm sim nrog ib nrab ntawm kev rau siab.
Txiav txim siab lub sijhawm siv:
Cov kev lag luam sib txawv yuav tsum muaj ntau hom roj ntes.
A) Tsau roj ntes:
Qhov no yog ib tug detector feem ntau siv nyob rau hauv industrial cov khoom thiab ntau lawm txheej txheem. Nws tuaj yeem ntsia tau rau ntawm cov ntsiab lus tshwj xeeb txhawm rau txheeb xyuas cov pa paug tshwj xeeb. Tsau detectors feem ntau yog ob daim. Lub taub hau kuaj pom muaj li ntawm sensors thiab transmitters yog ntsia tag nrho ntawm qhov chaw kuaj pom. Cov cuab yeej thib ob uas muaj cov khoom siv hluav taws xob, cov khoom siv hluav taws xob thiab cov khoom siv lub tswb raug teeb tsa tag nrho hauv qhov chaw nyab xeeb rau kev saib xyuas yooj yim. Nws lub hauv paus ntsiab lus tshawb pom yog qhov tsim nyog rau kev ruaj ntseg txuas ntxiv thiab mus sij hawm ntev uas yuav tsum tau ua kom ruaj khov hauv cov txheej txheem thiab thev naus laus zis. Lawv kuj yuav tsum tau xaiv raws li hom thiab concentration ntawm cov roj ntawm qhov chaw. Nyob rau tib lub sijhawm, kev saib xyuas yuav tsum tau them rau kev txhim kho lawv nyob rau hauv qhov chaw uas tshwj xeeb gases feem ntau yuav xau. Piv txwv li, qhov siab zoo tshaj plaws rau kev teeb tsa sensor yuav tsum raug xaiv raws li qhov tshwj xeeb lub ntiajteb txawj nqus ntawm cov pa roj, thiab lwm yam.
B) Portable Gas Detector:
Vim tias cov cuab yeej siv tau yooj yim rau kev khiav lag luam thiab me me, lawv tuaj yeem nqa mus rau ntau qhov chaw tsim khoom. Lub electrochemical detector yog siv los ntawm cov roj teeb alkaline thiab tuaj yeem siv tsis tu ncua rau 1, 000 teev; tus tshiab LEL ntes, PID thiab cov cuab yeej sib xyaw siv cov roj teeb uas siv tau (qee tus tau siv cov roj teeb tsis nco qab nickel-hlau hydride lossis lithium-ion roj teeb), lawv tuaj yeem ua haujlwm tsis tu ncua rau ze li 12 teev. Yog li ntawd, cov cuab yeej zoo li no tau siv ntau dua hauv ntau lub chaw tsim khoom thiab chaw saib xyuas kev noj qab haus huv.
