SHINHO星河SHN-ACC-BGG-W,出售云永WYN3H3C80Z4CREVIS,ST-2924,4 Points, 24Vac/2A, 24Vdc/2A, 1 Points/1COM
CREVIS,ST-2944,4 Points, 24Vac/2A, 24Vdc/2A, 1Point/1Com
CREVIS,ST-2734,4 Points, 24~220Vac/0.5A, 24~220Vac/0.5A, 4Points, 1Ponit/1COM
CREVIS,ST-2852,Triac Output 2 Points, 12V ~ 125Vac / 0.5A
CREVIS,ST-2792,Relay Output 2 Points, TermiCREVIS,NAl,230Vac / 2A, CREVIS,MAnual Type
CREVIS,ST-2748,Relay Output 8 Points, TermiCREVIS,NAl, 230Vac / 2A, 24Vdc/2A
CREVIS,ST-2744,Relay Output 4 Points, TermiCREVIS,NAl, 230Vac / 2A, 24Vdc/2A
CREVIS,ST-2742,Relay Output 2 Points, TermiCREVIS,NAl,230Vac / 2A, 24Vdc/2A
CREVIS,ST-2624,Digital Output 4 Points, Source, TermiCREVIS,NAl, 24Vdc / 2A
CREVIS,ST-2524,Digital Output 4 Points, Source, TermiCREVIS,NAl, DiagnoCREVIS,STics, 24Vdc / 2A
CREVIS,ST-2614,Digital Output 4 Points, Sink, TermiCREVIS,NAl, 24Vdc / 2A
CREVIS,ST-2514,Digital Output 4 Points, Sink, TermiCREVIS,NAl, DiagnoCREVIS,STics, 24Vdc / 2A
CREVIS,ST-2424,Digital Output 4 Points, Source, TermiCREVIS,NAl, DiagnoCREVIS,STics, 24Vdc / 0.5A
CREVIS,ST-2328,Digital Output 8 Points, Source, TermiCREVIS,NAl, 24Vdc / 0.5A
CREVIS,ST-2324,Digital Output 4 Points, Source, TermiCREVIS,NAl, 24Vdc / 0.5A
廣泛采用電液位計(jì),應(yīng)用在江河、琥珀、水庫(kù)、渠道、水電站等工程中。特點(diǎn)常用的水位計(jì)有四種:玻璃管式,平板式、雙色水位計(jì)和低地位水位計(jì)。玻璃管式水位計(jì)玻璃管式水位計(jì),公稱壓力一般不超過1.6MPa,公稱直徑有DN15和DN20兩種,玻璃管內(nèi)徑不應(yīng)小于8mm,厚度不小于3mm。玻璃管式水位計(jì)主要由汽旋塞,水旋塞,玻璃管、排污旋塞和連接法蘭等組成。鍋爐內(nèi)的水位高低和變化,透過玻璃管顯示出來。玻璃管的中心線要與水位計(jì)汽、水旋塞的中心線同心,以防止玻璃管受扭曲應(yīng)力而破裂。為了防止玻璃管爆破傷人,在帶有鋼球的水位計(jì)內(nèi),在旋塞內(nèi)配有彈子,汽、水爆破的沖力使彈子自動(dòng)關(guān)閉汽、水旋塞。同時(shí)還應(yīng)安裝防護(hù)罩。防護(hù)罩一般用較厚的耐溫的鋼化玻璃板制成。
CREVIS,ST-2414,Digital Output 4 Points, Sink, TermiCREVIS,NAl, DiagnoCREVIS,STics, 24Vdc / 0.5A
CREVIS,ST-2318,Digital Output 8 Points, Sink, TermiCREVIS,NAl, 24Vdc / 0.5A
CREVIS,ST-2314,Digital Output 4 Points, Sink, TermiCREVIS,NAl, 24Vdc / 0.5A
CREVIS,ST-222F,Digital Output 16 Points, Source, 20P Connector, 24Vdc / 0.5A
CREVIS,ST-221F,Digital Output 16 Points, Sink, 20P Connector, 24Vdc / 0.5A
CREVIS,ST-2124,Digital Output 4 Points, TTL Non- InveCREVIS,RTing, TermiCREVIS,NAl, 5Vdc / 20CREVIS,MA
CREVIS,ST-2114,Digital Output 4 Points, TTL InveCREVIS,RTing, TermiCREVIS,NAl, 5Vdc / 20CREVIS,MA
CREVIS,ST-1904,Digital Input 4 Points, 240Vac (AC 170V ~ 264V)
CREVIS,ST-1804,Digital Input 4 Points, 120Vac (AC 85V ~ 132V)
CREVIS,ST-132F,Digital Input 16 Points, Source, 20P Connector 48Vdc
CREVIS,ST-1324,Digital Input 4 Points, Source, TermiCREVIS,NAl, 48Vdc
CREVIS,ST-131F,Digital Input 16 Points, Sink, 20P Connector 48Vdc
CREVIS,ST-1314,Digital Input 4 Points, Sink, TermiCREVIS,NAl, 48Vdc
CREVIS,ST-122F,Digital Input 16 Points, Source, 20P Connector, 12V/24Vdc
CREVIS,ST-1228,Digital Input 8 Points, Source, TermiCREVIS,NAl, 12V / 24Vdc
CREVIS,ST-1224,Digital Input 4 Points, Source, TermiCREVIS,NAl, 12V / 24Vdc
CREVIS,ST-121F,Digital Input 16 Points, Sink, 20P Connector, 12V/24Vdc
在10%誤差曲線上確定電流互感器的允許二次負(fù)荷⑶按照對(duì)電流互感器二次負(fù)荷嚴(yán)重的短路類型,計(jì)算電流互感器的實(shí)際二次負(fù)荷⑷比較實(shí)際二次負(fù)荷與允許二次負(fù)荷。如實(shí)際二次負(fù)荷小于允許二次負(fù)荷,表示電流互感器的誤差不超過10%誤差:1)增大連接導(dǎo)線截面或縮短連接導(dǎo)線長(zhǎng)度,以減小實(shí)際二次負(fù)荷2)選擇比較大的電流互感器,減小一次電流倍數(shù),增大允許二次負(fù)荷3)將電流互感器的二次繞組串聯(lián)起來,使允許二次負(fù)荷增大一倍。動(dòng)、熱度需校驗(yàn)電流互感器的動(dòng)度和熱度[9],廠的產(chǎn)品技術(shù)參數(shù)中都給出了動(dòng)倍數(shù)Kes和熱倍數(shù)Kt,因此按下列公式分別校驗(yàn)動(dòng)和熱定度即可。1)動(dòng)度校驗(yàn)Kes×I1N≥iSh2)熱度校驗(yàn)(KtI1n)2t≥I⑶∞tima式中。使用期限。雙色水位計(jì)雙色水位計(jì)主要有透射式、反射式和反透式等數(shù)種。透射式雙色水位計(jì)這種水位計(jì)由鏡、光原、紅、綠濾光鏡、柱面聚鏡、平面鏡、影屏、框架、汽水旋塞等構(gòu)件組成。透射式雙色水位計(jì)的工作原理與其他形式的水位計(jì)基本相同,所不同的是光源的光線經(jīng)鏡反射,通過光學(xué),使穿過水的那部分光線在影屏鏡上呈綠色,而穿過汽的那部分光線在影屏鏡上呈紅色,從而在影屏鏡上顯示了代表水綠、汽紅鍋筒內(nèi)水位的變化。反射式雙色水位計(jì)反射式雙色水位計(jì)是利用光在水和蒸汽中具有不同的折射率,通過棱鏡的反射作用,使水位計(jì)中蒸汽部分呈紅色.水部分呈綠色。反透式雙色水位計(jì)它的結(jié)構(gòu)介于透射式與反射式之間,其水位顯示既利用了光線的透射。