BEDIA 液位開關 419088翊霈代理供應
發(fa)布日期(qi):2023-12-20
簡要描述:
接近開關是一種無需與運動部件進行機械直接接觸而可以操作的位置開關,當物體接近開關的感應面到動作距離時,不需要機械接觸及施加任何壓力即可使開關動作,從而驅動直流電器或給計算機(plc)裝置提供控制指令。接近開關是種開關型傳感器(即無觸點開關),它既有行程開關、微動開關的特性,同時具有傳感性能,且動作可靠,性能穩定,頻率響應快,應用壽命長,抗干擾能力強等、并具有防水、防震、耐腐蝕等特點。產品有電感式、電容式、霍爾式、交、直流型。
接近(jin)開(kai)關又稱無(wu)觸(chu)點接近(jin)開(kai)關,是(shi)理(li)想的(de)電(dian)子開(kai)關量傳感器。當金(jin)屬檢(jian)測體接近(jin)開(kai)關的(de)感應區域,開(kai)關就能無(wu)接觸(chu),無(wu)壓力、無(wu)火花、迅速發出電(dian)氣指令,準確(que)反應出運動(dong)機(ji)構(gou)的(de)位(wei)(wei)置和(he)(he)行(xing)(xing)程(cheng),即使用(yong)于(yu)一般(ban)的(de)行(xing)(xing)程(cheng)控(kong)制(zhi),其定位(wei)(wei)精度、操(cao)作(zuo)頻率、使用(yong)壽命(ming)、安裝調(diao)整的(de)方便性和(he)(he)對惡劣環境的(de)適用(yong)能力,是(shi)一般(ban)機(ji)械式行(xing)(xing)程(cheng)開(kai)關所(suo)不(bu)能相(xiang)比的(de)。它廣泛地應用(yong)于(yu)機(ji)床、冶金(jin)、化工、輕紡和(he)(he)印刷等(deng)行(xing)(xing)業(ye)。在自動(dong)控(kong)制(zhi)系統(tong)中可作(zuo)為(wei)限位(wei)(wei)、計數(shu)、定位(wei)(wei)控(kong)制(zhi)和(he)(he)自動(dong)保(bao)護環節等(deng)。
絕緣(yuan)耐(nai)(nai)電(dian)(dian)(dian)(dian)壓(ya)(ya)測試(shi)儀(yi)又叫電(dian)(dian)(dian)(dian)氣絕緣(yuan)強度(du)試(shi)驗儀(yi)或(huo)叫介(jie)質強度(du)測試(shi)儀(yi)。將(jiang)(jiang)一(yi)規定(ding)交(jiao)流或(huo)直流高(gao)壓(ya)(ya)施加在(zai)電(dian)(dian)(dian)(dian)器(qi)帶電(dian)(dian)(dian)(dian)部(bu)(bu)分和非帶電(dian)(dian)(dian)(dian)部(bu)(bu)分(一(yi)般為外殼)之間(jian)以檢(jian)查(cha)電(dian)(dian)(dian)(dian)器(qi)的絕緣(yuan)材料(liao)所能(neng)(neng)(neng)承(cheng)受(shou)(shou)耐(nai)(nai)壓(ya)(ya)能(neng)(neng)(neng)力的試(shi)驗。電(dian)(dian)(dian)(dian)器(qi)在(zai)長(chang)期工(gong)作(zuo)中,不僅(jin)要(yao)承(cheng)受(shou)(shou)規定(ding)的工(gong)作(zuo)電(dian)(dian)(dian)(dian)壓(ya)(ya)的作(zuo)用(yong)(yong),還要(yao)承(cheng)受(shou)(shou)操(cao)作(zuo)過(guo)(guo)程中引起短(duan)時(shi)間(jian)的高(gao)于額(e)定(ding)工(gong)作(zuo)電(dian)(dian)(dian)(dian)壓(ya)(ya)的過(guo)(guo)電(dian)(dian)(dian)(dian)壓(ya)(ya)(過(guo)(guo)電(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)(zhi)可能(neng)(neng)(neng)會高(gao)于額(e)定(ding)工(gong)作(zuo)電(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)(zhi)的好幾倍(bei))。在(zai)這些(xie)電(dian)(dian)(dian)(dian)壓(ya)(ya)的作(zuo)用(yong)(yong)下,電(dian)(dian)(dian)(dian)氣絕緣(yuan)材料(liao)的內部(bu)(bu)結構將(jiang)(jiang)發(fa)生變(bian)化。當(dang)過(guo)(guo)電(dian)(dian)(dian)(dian)壓(ya)(ya)強度(du)達到某一(yi)定(ding)值(zhi)(zhi)時(shi),就會使材料(liao)的絕緣(yuan)擊(ji)穿,電(dian)(dian)(dian)(dian)器(qi)將(jiang)(jiang)不能(neng)(neng)(neng)正常運行,操(cao)作(zuo)者就可能(neng)(neng)(neng)觸電(dian)(dian)(dian)(dian),危及(ji)人(ren)身安(an)全。
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BEDIA 液位開關 419088翊霈代理供應
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