霸州市批發(fā)韓國(guó)Autovalve閥門(mén)AS200-600F-S/V-L/S中山立訊電氣有限公司直銷中山立訊電氣有限公司銷售韓國(guó)DONGYANG F&C 氫氧化鈉自動(dòng)閥
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DONGYANG F&C 氫氧化鈉自動(dòng)閥
LCD-1000S LCD-1100S LCD-1200S LCD-1300S LCD-1400S LCD-1500S
LCD-2000S LCD-2100S LCD-2200S LCD-2300S LCD-2400S LCD-2500S
LCD-3000S LCD-3100S LCD-3200S LCD-3300S LCD-3400S LCD-3500S
LCD-1010S LCD-1110S LCD-1210S LCD-1310S LCD-1410S LCD-1510S
LCD-2010S LCD-2110S LCD-2210S LCD-2310S LCD-2410S LCD-2510S
LCD-3010S LCD-3110S LCD-3210S LCD-3310S LCD-3410S LCD-3510S
LCD-1020S LCD-1120S LCD-1220S LCD-1320S LCD-1420S LCD-1520S
LCD-2020S LCD-2120S LCD-2220S LCD-2320S LCD-2420S LCD-2520S
LCD-3020S LCD-3120S LCD-3220S LCD-3320S LCD-3420S LCD-3520S
LCD-1001S LCD-1101S LCD-1201S LCD-1301S LCD-1401S LCD-1501S聲波在水介質(zhì)中傳播速度高,距離大,也不需要建測(cè)井。兩種水位計(jì)均可用電纜傳輸至室內(nèi)顯示或儲(chǔ)存記錄(見(jiàn)水位觀測(cè))。區(qū)別水位計(jì)產(chǎn)品多種多樣,其中以玻璃管液位計(jì)和玻璃板液位計(jì)使用的多,玻璃管液位計(jì)又因材質(zhì)的不同分為普通玻璃管液位計(jì)和石英玻璃管液位計(jì),二者是有區(qū)別的。GZS-A型雙色石英玻璃管液位計(jì)1)、測(cè)量范圍:300~2200mm2)、工作溫度:-20~450℃3)、工作壓力:PN0~6.4MPa4)、石英管試驗(yàn)壓力:≤13MPa5)、表體材質(zhì):優(yōu)質(zhì)碳鋼或1Cr18Ni9Ti6)、有液體時(shí)為綠色,無(wú)液體時(shí)為紅色GZS-C型普通玻璃管液位計(jì)適合在常溫、常壓下各種環(huán)境內(nèi)使用,的特點(diǎn)就是價(jià)格低廉、直讀顯示。
LCD-2001S LCD-2101S LCD-2201S LCD-2301S LCD-2401S LCD-2501S
LCD-3001S LCD-3101S LCD-3201S LCD-3301S LCD-3401S LCD-3501S
LCD-1011S LCD-1111S LCD-1211S LCD-1311S LCD-1411S LCD-1511S
LCD-2011S LCD-2111S LCD-2211S LCD-2311S LCD-2411S LCD-2511S
LCD-3011S LCD-3110S LCD-3211S LCD-3311S LCD-3411S LCD-3511S
LCD-1021S LCD-1121S LCD-1221S LCD-1321S LCD-1421S LCD-1521S
LCD-2021S LCD-2121S LCD-2221S LCD-2321S LCD-2421S LCD-2521S
LCD-3021S LCD-3121S LCD-3221S LCD-3321S LCD-3421S LCD-3521S
LCD-1002S LCD-1102S LCD-1202S LCD-1302S LCD-1402S LCD-1502S
LCD-2002S LCD-2102S LCD-2202S LCD-2302S LCD-2402S LCD-2502S
LCD-3002S LCD-3102S LCD-3202S LCD-3302S LCD-3402S LCD-3502S
霸州市批發(fā)韓國(guó)Autovalve閥門(mén)AS200-600F-S/V-L/S二次側(cè)額定電流通常為1A或5A。其中2×a/C表示同一臺(tái)產(chǎn)品有兩種電流比,通過(guò)改變產(chǎn)品的連接片接線方式實(shí)現(xiàn),當(dāng)串聯(lián)時(shí),電流比為a/c,并聯(lián)時(shí)電流比為2×a/C。一般情況下,計(jì)量用電流互感器變流比的選擇應(yīng)使其一次額定電流I1n不小于線路中的負(fù)荷電流(即計(jì)算IC)。如線路中負(fù)荷計(jì)算電流為350A,則電流互感器的變流比應(yīng)選擇400/5。保護(hù)用的電流互感器為保證其準(zhǔn)確度要求,可以將變比選得大一些。準(zhǔn)確級(jí)應(yīng)根據(jù)測(cè)量準(zhǔn)確度[8]要求選擇電流互感器的準(zhǔn)確級(jí)并進(jìn)行校驗(yàn)。下表為不同準(zhǔn)確級(jí)電流互感器的誤差限值:電流互感器準(zhǔn)確級(jí)和誤差限值電流互感器準(zhǔn)確級(jí)和誤差限值準(zhǔn)確級(jí)選擇的原則:計(jì)費(fèi)計(jì)量用的電流互感器其準(zhǔn)確級(jí)不低于0.5級(jí);
LCD-1012S LCD-1112S LCD-1212S LCD-1312S LCD-1412S LCD-1512S
LCD-2012S LCD-2112S LCD-2212S LCD-2312S LCD-2412S LCD-2512S
LCD-3012S LCD-3110S LCD-3212S LCD-3312S LCD-3412S LCD-3512S
LCD-1022S LCD-1122S LCD-1222S LCD-1322S LCD-1422S LCD-1522S
LCD-2022S LCD-2122S LCD-2222S LCD-2322S LCD-2422S LCD-2522S它的二次回路始終是閉合的,因此測(cè)量?jī)x表和保護(hù)回路串聯(lián)線圈的阻抗很小,電流互感器的工作狀態(tài)接近短路。工作原理編輯在發(fā)電、變電、輸電、配電和用電的線路中電流大小懸殊,從幾安到幾萬(wàn)安都有。為便于測(cè)量、保護(hù)和控制需要轉(zhuǎn)換為比較統(tǒng)一的電流,另外線路上的電壓一般都比較高如直接測(cè)量是非常危險(xiǎn)的。電流互感器就起到電流變換和電氣隔離作用[1]。對(duì)于指針式的電流表,電流互感器的二次電流大多數(shù)是安培級(jí)的(如5A等)。對(duì)于數(shù)字化儀表,采樣的信號(hào)一般為毫安級(jí)(0-5V、4-20mA等)。微型電流互感器二次電流為毫安級(jí),主要起大互感器與采樣之間的橋梁作用。微型電流互感器也有人稱之為“儀用電流互感器”。(“儀用電流互感器”有一層含義是在實(shí)驗(yàn)室使用的多電流比精密電流互感器。無(wú)自爆,耐火或阻燃產(chǎn)品。9)立桿及其主要構(gòu)件的所有外露金屬表面均應(yīng)采用熱浸鍍鋅層防護(hù),鍍鋅層均勻且厚度不小于55μm。10)立桿及其主要構(gòu)件結(jié)構(gòu)裝配的質(zhì)量應(yīng)滿足下列要求:11)立桿及其主要構(gòu)件高度允許偏差±200mm;12)立桿及其主要構(gòu)件截面尺寸允許偏差±3mm;13)立桿及其主要構(gòu)件安裝后塔軸線位移允許偏差±5mm;14)立桿及其主要構(gòu)件垂直允許偏差為塔身高度的1/1000;15)立桿及其主要構(gòu)件尺寸應(yīng)協(xié)調(diào)一致,桁架塔塔身應(yīng)對(duì)燈架升降起到良好的導(dǎo)向、定位作用。16)鋼結(jié)構(gòu)的聯(lián)接螺栓應(yīng)簡(jiǎn)單統(tǒng)一,螺栓規(guī)格宜采用M16,連結(jié)應(yīng)有防松動(dòng)措施,且牢固可靠。17)立桿及其主要構(gòu)件所有焊接處焊縫應(yīng)符合標(biāo)準(zhǔn)要求。
LCD-3022S LCD-3122S LCD-3222S LCD-3322S LCD-3422S LCD-3522S
LCD-1003S LCD-1103S LCD-1203S LCD-1303S LCD-1403S LCD-1503S
LCD-2003S LCD-2103S LCD-2203S LCD-2303S LCD-2403S LCD-2503S
LCD-3003S LCD-3103S LCD-3203S LCD-3303S LCD-3403S LCD-3503S
LCD-1013S LCD-1113S LCD-1213S LCD-1313S LCD-1413S LCD-1513S
LCD-2013S LCD-2113S LCD-2213S LCD-2313S LCD-2413S LCD-2513S
LCD-3013S LCD-3110S LCD-3213S LCD-3313S LCD-3413S LCD-3513S
LCD-1023S LCD-1123S LCD-1223S LCD-1323S LCD-1423S LCD-1523S
LCD-2023S LCD-2123S LCD-2223S LCD-2323S LCD-2423S LCD-2523S
LCD-3023S LCD-3123S LCD-3223S LCD-3323S LCD-3423S LCD-3523S
LCD-1004S LCD-1104S LCD-1204S LCD-1304S LCD-1404S LCD-1504S
LCD-2004S LCD-2104S LCD-2204S LCD-2304S LCD-2404S LCD-2504S
LCD-3004S LCD-3104S LCD-3204S LCD-3304S LCD-3404S LCD-3504S
LCD-1014S LCD-1114S LCD-1214S LCD-1314S LCD-1414S LCD-1514S
LCD-2014S LCD-2114S LCD-2214S LCD-2314S LCD-2414S LCD-2514S
LCD-3014S LCD-3110S LCD-3214S LCD-3314S LCD-3414S LCD-3514S
LCD-1024S LCD-1124S LCD-1224S LCD-1324S LCD-1424S LCD-1524S
LCD-2024S LCD-2124S LCD-2224S LCD-2324S LCD-2424S LCD-2524S
LCD-3024S LCD-3124S LCD-3224S LCD-3324S LCD-3424S LCD-3524S
維修中需要注意一下幾點(diǎn)拆卸、調(diào)整儀表時(shí),應(yīng)記錄原來(lái)的位置,以便復(fù)原。在潮濕環(huán)境下檢修無(wú)紙記錄儀故障時(shí),對(duì)印刷線路用萬(wàn)用表測(cè)其各點(diǎn)是否通暢很有必要,因?yàn)檫@種情況下的主要故障是銅箔腐蝕。用萬(wàn)用表歐姆擋時(shí),切記不要帶電測(cè)量。修理精密無(wú)紙記錄儀時(shí),如不慎將小零件彈飛,可采取磁鐵掃描和視線掃描方法進(jìn)行尋找。檢測(cè)電源中的濾波電容時(shí),應(yīng)先將電解電容器的正負(fù)極短路一下,而且短路時(shí)不要用表筆線來(lái)代替導(dǎo)線對(duì)電容器進(jìn)行放電,因?yàn)檫@樣容易燒斷芯線??梢匀∫恢粠纛^引線的220V,60~100W的燈,接于電容器的兩端,在放電瞬間燈泡會(huì)閃光。檢修無(wú)紙記錄儀內(nèi)部電路時(shí),如果安裝元件的接點(diǎn)和電路板上涂了絕緣清漆。而統(tǒng)稱為主電極Tl和T2。它的符號(hào)也和普通可控硅不同,是把兩個(gè)可控硅反接在一起畫(huà)成的,如圖2所示。它的型號(hào),在我國(guó)一般用“3CTS”或“KS”表示;國(guó)外的資料也有用“TRIAC”來(lái)表示的。雙向可控硅的規(guī)格、型號(hào)、外形以及電極引腳排列依生產(chǎn)廠家不同而有所不同,但其電極引腳多數(shù)是按TTG的顧序從左至右排列(觀察時(shí),電極引腳向下,面對(duì)標(biāo)有字符的一面)。市場(chǎng)上常見(jiàn)的幾種塑封外形結(jié)構(gòu)雙向可控硅的外形及電極引腳排列如下圖1所示。晶閘管特性可控硅可控硅為了能夠直觀地認(rèn)識(shí)晶閘管的工作特性,大家先看這塊示教板(圖3)。晶閘管VS與小燈泡EL串聯(lián)起來(lái),通過(guò)開(kāi)關(guān)S接在直流電源上。注意陽(yáng)極A是接電源的正極,陰極K接電源的負(fù)極。