Lub thawv hluav taws xob ntsuas hluav taws xob, txhua qhov hauv lawv cov tsos, yuav zoo li tsuas yog lub plhaub tiv thaiv, tab sis lawv tau txiav txim siab hluav taws xob kev nyab xeeb. Ntau tus neeg, thaum yuav thiab txhim kho lawv, tsuas yog tsom rau qhov loj me, tsis quav ntsej cov khoom sib txawv, yooj yim tsim cov kev phom sij zais xws li xau, hluav taws kub, thiab corrosion. Cov ntaub ntawv siv rau 'meter' box shells nyob rau hauv kev ua lag luam tsis yog complex, feem ntau yog poob rau hauv peb pawg: yas, fiberglass, thiab hlau, haum rau txawv sab nraum zoov thiab sab hauv tsev scenarios. Tsis txhob blindly xaiv qhov kim tshaj plaws; xaiv ib qho uas haum rau ib puag ncig.
Tam sim no, hom ntau tshaj plaws nyob rau hauv cov tsev nyob hauv txoj kev hauv tsev yog PC / ABS cov khoom siv yas meter lub thawv plhaub. Lub qhov rooj feem ntau yog ua los ntawm cov pob tshab polycarbonate, tso cai rau koj kom pom cov 'meter' nyeem ntawv yam tsis tau qhib lub thawv, ua rau kev nyeem ntawv txhua hnub yooj yim dua. Lub hauv paus yog ua los ntawm cov nplaim hluav taws- cov yas retardant nrog tsim- nyob rau hauv cov khoom siv rwb thaiv tsev, yog li txawm tias muaj cov xaim hluav taws xob sab hauv, lub plhaub yuav tsis nyob, ua kom muaj kev nyab xeeb siab rau kev siv hauv tsev. Nws muaj kev tiv thaiv zoo rau qhov txias thiab kub, ua haujlwm ib txwm nyob hauv ib puag ncig xws li -40℃txog 80 degree, thiab tsis yooj yim hnub nyoog los ntawm kev tshav ntuj sab nraum zoov, kav ntev txog 20 xyoo nyob rau hauv ib txwm siv, muab tus nqi siab -effectiveness. Qhov tsuas drawback yog nws qhov nruab nrab cuam tshuam tsis kam; Nws yog qhov ua rau tawg los ntawm kev cuam tshuam hnyav, thiab nws txoj kev tiv thaiv - tub sab tub nyiag muaj peev xwm tsis muaj zog, ua rau nws tsuas yog tsim nyog rau cov tsev nyob thiab cov chaw hauv tsev. Rau qhov chaw hnyav xws li thaj chaw nyob sab nraum zoov thiab ntug hiav txwv fais fab, SMC fiberglass enclosures feem ntau nyiam. Cov khoom siv no yog qhov nyuaj dua li cov yas zoo tib yam, muab cov dej tsis zoo thiab cov ntsev tsuag tsis zoo. Nws yuav tsis corrode los yog xeb nyob rau hauv cov av noo, qab ntsev ntawm ntug dej hiav txwv ib puag ncig, thiab yuav kav mus txog rau 30 xyoo sab nraum zoov. Nws kuj tseem muab kev tiv thaiv zoo dua - tub sab nyiag thiab tiv thaiv - kev tiv thaiv kab mob, thiab nws cov nplaim hluav taws xob thiab cov khoom siv hluav taws xob ua tau raws li cov qauv hluav taws xob. Txawm li cas los xij, nws tsis muaj lub qhov rais pob tshab, yuav tsum qhib lub thawv los xyuas lub ntsuas ntsuas txhua zaus, ua rau nws yooj yim dua li cov qauv yas. Nws kuj hnyav dua, ua rau kev teeb tsa thiab kev thauj mus los nyuaj me ntsis.
Txias- dov steel thiab 304 stainless hlau enclosures feem ntau yog siv nyob rau hauv factories thiab txoj kev - khw muag khoom pem hauv ntej. Cov ntaub ntawv hlau muab kev ua haujlwm zoo tshaj plaws, muab qhov zoo tshaj plaws kev cuam tshuam thiab kev tiv thaiv kev tiv thaiv, thiab cov ntaub thaiv npog dissipates cua sov sai dua, ua rau nws haum rau siab - fais fab kev lag luam meters. Ordinary hmoov-coated hlau thawv yog pheej yig, tab sis cov xim yog khawb tau yooj yim thiab xeb yooj yim. Tsis tas li ntawd, hlau yog cov khoom siv hluav taws xob, yuav tsum tau ua kom zoo hauv av thaum lub sijhawm teeb tsa. 304 stainless hlau tsis muaj dej tsis zoo thiab tsis muaj xeb, muab cov khoom siv sab nraum zoov muaj zog, tab sis nws kim dua. Nyob rau lub caij ntuj sov, qhov kub ntawm qhov thaiv qhov kub nce siab heev tom qab raug tshav ntuj ncaj qha, rov xav tau hauv av - qhov tseem ceeb uas tsis tuaj yeem saib xyuas.
Tsis tas li ntawd, qub -fashioned nyias daim hlau thiab bakelite casings tau ntev tau raug txiav tawm los ntawm kev lag luam. Cov casings no muaj hnub nyoog sai sai, yooj yim tawg, muaj kev sib khi tsis zoo, thiab ua rau muaj kev pheej hmoo siab ntawm hluav taws xob. Lawv feem ntau hloov pauv thaum kho dua tshiab hauv thaj chaw qub, yog li kev siv ntiag tug tsis pom zoo.
Rau kev xaiv txhua hnub, koj tuaj yeem xa mus rau cov hauv qab no: Rau ib nrab- qhib ib puag ncig zoo li stairwells, pob tshab yas thawv yog txaus; rau qhov chaw los nag los yog ntug hiav txwv dej, fiberglass yog nyiam, ua raws li stainless hlau; rau kev faib hluav taws xob sab hauv tsev hauv cov chaw tsim khoom, hmoov-coated sheet hlau thawv yog tsim nyog. Kev tiv thaiv qib kuj tuaj yeem sib txawv: IP30 rau kev tiv thaiv plua plav sab hauv tsev, IP54 rau kev tiv thaiv sab nraum zoov, thiab IP65 rau ntev - raug los nag.
Thaum kawg, ntawm no yog qee qhov kev ceev faj txog kev nyab xeeb: Hlau meter thawv yuav tsum tau ua hauv av; qhov no yog cov txheej txheem kev nyab xeeb tshaj plaws. Yas thiab fiberglass insulated thawv tsis xav tau hauv av, tab sis tsis txhob tho qhov los hloov lawv, vim qhov no yuav ua rau cov qauv dej tsis zoo. Hloov cov thawv tam sim yog tias cov kab nrib pleb tshwm los yog cov ntsaws ruaj ruaj poob. Thaum yuav khoom, xaiv cov khoom ua raws, muaj ntawv pov thawj thaum twg los tau; inferior casings muaj cov nplaim hluav taws tsis zoo thiab tuaj yeem ua rau hluav taws xob tau yooj yim.
