Dab tsi yog qhov yuav tsum tau siv rau kev siv portable combustible gas detectors?
Txhawm rau nrhiav cov chaw tsim thiab siv cov pa roj, cov khoom siv hluav taws xob hluav taws xob tau siv dav hauv coking, tshuaj lom neeg, roj av, roj av, thiab metallurgical industries. Lawv kuj tuaj yeem siv los txheeb xyuas qhov chaw khaws cia, kev faib tawm, thiab kev sib kis ntawm cov pa roj. Cov thawj coj ntawm kev nyab xeeb kev ua haujlwm nrog rau kev saib xyuas thiab tshuaj xyuas cov neeg ua haujlwm tuaj yeem siv lawv. tsim nyog tiv thaiv iav. Yuav ua li cas cov xwm txheej yuav tsum tau ua kom thiaj li siv tau lub tshuab hluav taws xob hluav taws xob portable?
1. Tus nqi ntawm lub tswb nrov
Muaj ib lub tshuab kuaj pom tus nqi teeb tsa, thiab nws qhov kev kuaj pom tus nqi yuav tsum nyob hauv thaj tsam ntawm 1% LEL ~ 25% LEL; lub portable combustible gas detector muaj ob qhov chaw nrhiav pom: tsawg txwv thiab siab txwv; qhov ntsuas qhov ntsuas qis qis yuav tsum nyob rau hauv thaj tsam ntawm 1% LEL ~ 25% LEL, thiab qhov ntsuas qhov ntsuas siab siab yuav tsum yog 50% LEL;
2. Tus nqi ntawm lub tswb ua haujlwm
Lub portable combustible gas detector qhov nrhiav kom tau tus nqi yuav tsum tsis pub tsawg tshaj li 1% LEL, thiab qhov sib txawv ntawm lub detector qhov kev txiav txim tus nqi thiab qhov nrhiav kom tau tus nqi yuav tsum tsis txhob ntau tshaj ± 3% LEL;
3. Deviation ntawm tag nrho cov ntau yam qhia
Nyob rau hauv cov ntaub ntawv ntawm detectors nruab nrog flammable gas concentration tso saib functionalities, qhov tsis sib xws ntawm cov qhia thiab cov nqi tiag tiag yuav tsum tsis txhob tshaj ± 5% LEL.
4. Lub sijhawm tiv thaiv
Thaum tus nqi tso tawm mus txog 90% ntawm tus nqi tiag tiag, lub sij hawm teb (t90) rau cov khoom siv hluav taws xob nrog cov pa taws ua kom pom kev ua haujlwm yuav tsum tsis pub ntau tshaj 30 vib nas this. Lub sij hawm tshawb nrhiav cov tshuaj tiv thaiv rau cov cuab yeej tsis muaj lub luag haujlwm rau kev nthuav tawm cov pa taws ntawm cov pa taws yuav tsum tsis pub ntev tshaj 30 vib nas this;
5. Lub tshuab hluav taws xob hluav taws xob hluav taws xob hluav taws xob lub roj teeb yuav tsum tau hloov kho.
Nws yuav tsum muaj peev xwm tsim cov suab sib txawv thiab lub teeb pom kev los ntawm lub tswb nrov thaum lub roj teeb qis, ntxiv rau nws cov roj teeb li niaj zaus;
7. Khaws lub ntsuas ntsuas tsis muaj hluav taws xob rau 24 teev ntawm -25 degree ± 2 degree F, tom qab ntawd muab tso rau hauv qhov chaw ib puag ncig tsawg kawg 24 teev, ua raws li lub sijhawm 24- teev ntawm 55 degree ± 2 degree F, thiab tom qab ntawd muab tso rau hauv qhov chaw qub. rov kho dua nyob rau hauv qhov xwm txheej tsawg kawg 24 teev;
8. Kev taw qhia (qhov ntsuas qhov nqus pa sab nraud)
Txhua 45 degree, lub ntsuas ntsuas qhov ntsuas qhov ntsuas tau ntsuas raws li peb qhov kev sib koom ua ke orthogonal axes ntawm X, Y, thiab Z. Qhov sib txawv ntawm tus nqi ntawm qhov kev kuaj pom thiab tus nqi ntawm qhov kev kuaj xyuas yuav tsum tsis txhob ntau tshaj ± 5%. LEL.
9. High concentration engulfment muaj nuj nqi (tsuas yog haum nrog detectors uas yog tawg-pov thawj)
Thaum cov roj concentration siab tshaj qhov ntsuas qhov ntsuas, lub ntsuas ntsuas yuav tsum tau tshaj tawm kev ceeb toom, teeb meem txhaum cai, lossis cov cim qhia meej meej thaum lub sijhawm submersion;
10. Rov ua dua ntawm cov kev xeem
Rau qhov ntsuas ntawm qhov ntsuas qhov ntsuas tau ua nrog tib lub ntsuas ntsuas hauv ib puag ncig ib puag ncig. Qhov sib txawv ntawm qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas thiab qhov ntsuas qhov ntsuas tus nqi yuav tsum tsis txhob siab dua ± 3% LEL.
