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Yuav ua li cas ntau npaum li cas cov pa taws ceeb toom ua qhov tsis zoo?
Cov tswb pa taws yog ib feem tseem ceeb ntawm kev nyab xeeb hauv tsev. Lawv ceeb toom rau peb txog tej xwm txheej hluav taws kub, muab sijhawm rau peb los teb. Txawm li cas los xij, lawv tsis yog tsis muaj lawv cov quirks. Ib qho teeb meem tshwm sim yog qhov tshwm sim ntawm qhov tsis zoo. False positives yog cov piv txwv uas lub tswb nrov tsis muaj ...Nyeem ntxiv -
Nkag siab Photoelectric Smoke Detectors: Phau Ntawv Qhia
Cov pa luam yeeb ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv cov tsev, muab cov lus ceeb toom tseem ceeb ntawm qhov hluav taws kub, thiab tso cai rau cov neeg nyob hauv lub sijhawm tseem ceeb uas yuav tsum tau khiav tawm kom nyab xeeb. Nrog ntau yam kev xaiv muaj nyob rau hauv kev ua lag luam, photoelectric pa luam yeeb detectors sawv tawm vim t ...Nyeem ntxiv -
To taub qhov hluav taws kub hnyiab: Cov pa luam yeeb dawb thiab dub sib txawv li cas
1. Cov pa luam yeeb dawb: Cov yam ntxwv thiab qhov chaw yam ntxwv: Xim: tshwm dawb lossis lub teeb grey. Particle Loj: Cov khoom loj dua (> 1 micron), feem ntau muaj cov dej vapor thiab cov combustion residues. Kub: Cov pa luam yeeb dawb feem ntau yog ass...Nyeem ntxiv -
Dab tsi tshiab hauv UL 217 9th Edition?
1. UL 217 9th Edition yog dab tsi? UL 217 yog lub tebchaws United States tus qauv rau cov pa luam yeeb, siv dav hauv cov tsev nyob thiab cov tsev lag luam kom ntseeg tau tias lub tswb nrov pa taws teb sai sai rau kev phom sij thaum txo cov tswb cuav. Piv rau yav dhau los versions, th ...Nyeem ntxiv -
Wireless Smoke thiab Carbon Monoxide Detector: Cov Lus Qhia Tseem Ceeb
Vim li cas Koj Thiaj Yuav Tsum Muaj Cov Hluav Taws Xob thiab Carbon Monoxide Ntes? Lub ntsuas pa taws thiab carbon monoxide (CO) yog qhov tseem ceeb rau txhua lub tsev. Cov pa taws ceeb toom pab tshawb xyuas hluav taws thaum ntxov, thaum cov pa roj carbon monoxide detectors ceeb toom koj txog qhov muaj cov pa phem, tsis muaj ntxhiab tsw - feem ntau hu ua ...Nyeem ntxiv -
puas ua rau lub tswb nrov?
Cov pa taws ceeb toom yog cov cuab yeej cawm txoj sia uas ceeb toom peb txog kev phom sij ntawm hluav taws, tab sis koj puas tau xav tias qee yam tsis muaj kev phom sij li lub zog tuaj yeem ua rau lawv? Nws yog ib qho teeb meem tshwm sim: koj tawm ntawm da dej kub, lossis tej zaum koj chav ua noj puv nrog chav ua noj, thiab dheev, koj cov pa luam yeeb ...Nyeem ntxiv