Cov khoom siv hluav taws xob hluav taws xob tuaj yeem ntes tau ntau yam roj av uas muaj hluav taws kub heev lossis tawg hauv qhov xwm txheej. Cov pa roj no muaj xws li methane, propane, butane, thiab natural gas. Lawv feem ntau pom muaj nyob hauv tsev, cov khoom siv roj av, thiab cov txheej txheem kev lag luam.
Nrog kev pab los ntawm cov cuab yeej hluav taws xob no, cov hluav taws kub muaj peev xwm tuaj yeem tshawb pom tau yooj yim thiab tiv thaiv lub sijhawm. Cov cuab yeej ntes tau paub thiab ceeb toom koj txog qhov muaj cov pa phem, tso cai rau koj ua haujlwm sai kom ntseeg tau tias koj muaj kev nyab xeeb thiab kev noj qab haus huv. Lawv yooj yim rau nruab, siv, thiab tswj, ua rau lawv muaj kev nyab xeeb zoo rau cov tswv tsev thiab cov lag luam ib yam nkaus.
Combustible gas detectors yog cov cuab yeej ntes tau teeb tsa thiab siv nyob rau hauv cov tsev lag luam thiab pej xeem cov tsev uas teb rau ib qho los yog ntau cov roj combustible. Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm combustible gas detector Nyob rau hauv tus tsim ntawm combustible gas detector, sensor thiab MCU yog cov tseem ceeb ntawm cov cuab yeej. Combustible gas concentration teeb liab converts cov tshuaj lom combustible gas concentration teeb liab rau hauv A voltage teeb liab los ntawm cov pa sensor. Tom qab lub pre-amplification Circuit Court, cov teeb liab yog ncaj qha tso zis los yog ib tug voltage teeb liab haum rau ib leeg-chip microcomputer yog tso zis los ntawm A / D hloov dua siab tshiab, thiab ces xa mus rau ib tug-chip microcomputer. Cov teeb liab analog voltage yuav tsum tau linearized tom qab ua cov ntaub ntawv. Lub teeb liab voltage hloov mus rau qhov sib npaug hexadecimal concentration tus nqi. Tus nqi concentration yog xa mus rau LCD zaub. Thaum cov concentration ntawm cov tshuaj lom combustible gas tshaj lub ceeb toom saum toj kawg nkaus, lub tswb emits lub audible thiab pom lub tswb, thiab cov zaub screen qhia txog cov xwm txheej.
Lub catalytic combustible gas detector ntsuas cov roj concentration los ntawm cov kev hloov tsis kam tsim los ntawm refractory hlau platinum hlau cua sov. Tom qab cov pa roj hauv cov huab cua nkag mus rau hauv lub ntes, qhov saum npoo ntawm platinum hlau yuav raug oxidation cov tshuaj tiv thaiv, thiab cov cua sov tsim nyob rau lub sijhawm no yuav maj mam nce qhov kub ntawm cov hlau platinum, uas ua rau muaj kev hloov pauv ntawm cov hlau platinum. Thaum ntsib qhov kub thiab txias thiab lwm yam, lub platinum hlau kub kuj tseem yuav cuam tshuam rau qee qhov, thiab cov ntaub ntawv tshawb pom kuj tseem yuav hloov pauv tom qab platinum hlau resistivity hloov.
Portable combustible gas detector tswb tus nqi feem ntau yog ob theem, uas yog, tsis tshua muaj nqi tshaj tawm, siab tshaj tawm tus nqi, kuj tuaj yeem kho raws li cov kev xav tau tshwj xeeb ntawm cov nqi tswb sib txawv (yeem), ntawm no feem ntau hais tias tus qauv portable combustible gas detector tswb nqi .
1. Cov nqi tshaj tawm qis yog 25% LEL, uas yog, thaum cov nqi siab ntawm cov roj hluav taws xob hauv qhov chaw kuaj pom ntawm lub vijtsam zaub nce mus txog lossis siab dua 25% LEL thiab tsawg dua 50% LEL, qhov ceeb toom qis yuav yog tshaj tawm, feem ntau yog ib qho kev ceeb toom kom tsis txhob muaj qhov nce sai ntawm cov roj combustible concentration, ua rau muaj xwm txheej. Yog tias kuaj pom qhov flammability kom ncav cuag tus nqi qis thiab ruaj khov ntawm qee qhov concentration, lub tswb yuav cia li nres tom qab 1-3 feeb.
2. Daim ntawv tshaj tawm tus nqi siab yog 50% LEL, uas yog, tom qab tus nqi siab ntawm cov roj combustible kuaj pom nyob rau hauv ib puag ncig ntawm cov zaub nce mus txog lossis siab dua 50% LEL, lub tswb nrov yuav raug xa mus rau tus neeg teb xov tooj mus rau teb raws sijhawm. Tshem tawm tag nrho cov haujlwm ntawm tes thiab pib lub kiv cua kom dilute qhov concentration ntawm cov roj combustible, thiaj li ua kom muaj kev nyab xeeb ntawm ib puag ncig thiab tiv thaiv qhov tshwm sim ntawm txhua qhov kev sib tsoo thiab tawg.