2020-925
774306皮(pi)爾茲繼電(dian)(dian)器(qi)(qi)一般由鐵(tie)芯、線圈(quan)(quan)、銜鐵(tie)、觸(chu)點(dian)(dian)簧塊等(deng)組(zu)成的。只(zhi)要在(zai)線圈(quan)(quan)兩(liang)端(duan)加上(shang)一定的電(dian)(dian)壓，線圈(quan)(quan)中(zhong)就會流過一定的電(dian)(dian)流，從(cong)而(er)產生(sheng)電(dian)(dian)磁(ci)效應，銜鐵(tie)就會在(zai)電(dian)(dian)磁(ci)力(li)(li)吸引的作用(yong)下克服返回(hui)彈簧的拉力(li)(li)吸向鐵(tie)芯，從(cong)而(er)帶動銜鐵(tie)的動觸(chu)點(dian)(dian)與靜(jing)觸(chu)點(dian)(dian)（常開觸(chu)點(dian)(dian)）吸合。當(dang)線圈(quan)(quan)斷電(dian)(dian)后，電(dian)(dian)磁(ci)的吸力(li)(li)也隨之消失，銜鐵(tie)就會在(zai)彈簧的反作用(yong)力(li)(li)返回(hui)原來的位置，使動觸(chu)點(dian)(dian)與原來的靜(jing)觸(chu)點(dian)(dian)（常閉觸(chu)點(dian)(dian)）吸合。這樣吸合、釋放，從(cong)而(er)達到了在(zai)電(dian)(dian)路(lu)中(zhong)的導通、切斷的目的。對(dui)于繼電(dian)(dian)器(qi)(qi)的“常開、常閉”觸(chu)點(dian)(dian)，可以這樣來區(qu)分，繼電(dian)(dian)器(qi)(qi)線圈(quan)(quan)未(wei)通電(dian)(dian)時處(chu)...
查看更多2020-821
774306皮爾茲繼(ji)電(dian)(dian)器(qi)是一種當輸入量（電(dian)(dian)、磁、聲(sheng)、光(guang)、熱）達到一定值時，輸出量將發生(sheng)跳躍式變(bian)化的(de)自動控制器(qi)件。繼(ji)電(dian)(dian)器(qi)電(dian)(dian)符(fu)號(hao)和觸點(dian)形式解(jie)析：常(chang)(chang)(chang)見(jian)縮寫COM(Common)表示(shi)共(gong)接(jie)點(dian)；NO(NormallyOpen)表示(shi)常(chang)(chang)(chang)開接(jie)點(dian)(a接(jie)點(dian))。平常(chang)(chang)(chang)處于開路(lu)(lu)，線圈(quan)通電(dian)(dian)后(hou)(hou)才與共(gong)接(jie)點(dian)COM接(jie)通；NC(NormallyClose)表示(shi)常(chang)(chang)(chang)閉接(jie)點(dian)(b接(jie)點(dian))。平常(chang)(chang)(chang)處于閉路(lu)(lu)(與共(gong)接(jie)點(dian)COM接(jie)通)，線圈(quan)通電(dian)(dian)后(hou)(hou)才成為開路(lu)(lu)(斷路(lu)(lu))。繼(ji)電(dian)(dian)器(qi)的(de)IEC標(biao)準電(dian)(dian)路(lu)(lu)符(fu)號(hao)(單刀(dao)雙擲型)開關觸點(dian)型式：繼(ji)電(dian)(dian)器(qi)線圈(quan)在電(dian)(dian)路(lu)(lu)中...
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VT505W00000ESA觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)早在(zai)此波智(zhi)能(neng)手(shou)(shou)機(ji)浪潮(chao)到(dao)來(lai)之(zhi)前，在(zai)各種掌上電(dian)(dian)(dian)腦、手(shou)(shou)機(ji)，甚至黑白屏(ping)手(shou)(shou)機(ji)上，你都曾看過觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)的(de)(de)(de)(de)身影。只不過在(zai)大(da)多數人(ren)的(de)(de)(de)(de)印(yin)象中，那個年代的(de)(de)(de)(de)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)總是與觸(chu)(chu)摸(mo)(mo)(mo)(mo)筆(bi)共(gong)同出現-必須通過觸(chu)(chu)摸(mo)(mo)(mo)(mo)筆(bi)或者指甲的(de)(de)(de)(de)按(an)壓，才(cai)能(neng)實(shi)現輸入指令，其(qi)本質為“電(dian)(dian)(dian)阻式(shi)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)”。而直到(dao)智(zhi)能(neng)手(shou)(shou)機(ji)的(de)(de)(de)(de)出現，另一種觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)-電(dian)(dian)(dian)容(rong)式(shi)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)開始出現在(zai)人(ren)們的(de)(de)(de)(de)視線中。然而經歷了4-5年的(de)(de)(de)(de)發展，從電(dian)(dian)(dian)阻式(shi)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)全面轉向電(dian)(dian)(dian)容(rong)式(shi)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)。電(dian)(dian)(dian)容(rong)式(shi)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)的(de)(de)(de)(de)優(you)勢(shi)主(zhu)要有以(yi)下幾點：1.操(cao)作新奇電(dian)(dian)(dian)容(rong)式(shi)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)支(zhi)持多點觸(chu)(chu)控，操(cao)作更(geng)加...
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中(zhong)(zhong)田牌電磁(ci)閥(fa)(fa)可用不同的操作(zuo)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)方(fang)(fang)式(shi)(shi)，改變(bian)閥(fa)(fa)芯與閥(fa)(fa)體內(nei)孔之間(jian)的相(xiang)對位置，實現(xian)換(huan)向（變(bian)換(huan)工作(zuo)位置），常(chang)用換(huan)向閥(fa)(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)方(fang)(fang)式(shi)(shi)有(you)電磁(ci)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，液(ye)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，電液(ye)動(dong)組合控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，手動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，機動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，氣動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)等方(fang)(fang)式(shi)(shi)。中(zhong)(zhong)田牌電磁(ci)閥(fa)(fa)根據(ju)管道參數選擇通(tong)徑規格（即DN）、接(jie)(jie)口方(fang)(fang)式(shi)(shi)。按照現(xian)場(chang)管道內(nei)徑尺寸(cun)或流量要(yao)求來確定(ding)通(tong)徑（DN）尺寸(cun)；接(jie)(jie)口方(fang)(fang)式(shi)(shi)，一(yi)般＞DN50要(yao)選擇法蘭接(jie)(jie)口，≤DN50則可根據(ju)用戶需要(yao)自(zi)由選擇。中(zhong)(zhong)田牌電磁(ci)閥(fa)(fa)的控(kong)(kong)(kong)制(zhi)(zhi)(zhi)方(fang)(fang)式(shi)(shi)基本上可分為兩種(zhong)：控(kong)(kong)(kong)零與控(kong)(kong)(kong)火。1.控(kong)(kong)(kong)“零”控(kong)(kong)(kong)零是指電磁(ci)閥(fa)(fa)的一(yi)端(duan)為常(chang)電，控(kong)(kong)(kong)制(zhi)(zhi)(zhi)單(dan)元(yuan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)...
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沃爾(er)沃減壓(ya)(ya)(ya)閥(fa)的(de)壓(ya)(ya)(ya)力(li)(li)(li)(li)特性(xing)是指(zhi)流(liu)量(liang)g為定(ding)值(zhi)時，因輸(shu)入(ru)壓(ya)(ya)(ya)力(li)(li)(li)(li)波(bo)(bo)動(dong)而(er)引起輸(shu)出(chu)壓(ya)(ya)(ya)力(li)(li)(li)(li)波(bo)(bo)動(dong)的(de)特性(xing)。輸(shu)出(chu)壓(ya)(ya)(ya)力(li)(li)(li)(li)波(bo)(bo)動(dong)越(yue)小，減壓(ya)(ya)(ya)閥(fa)的(de)特性(xing)越(yue)好。輸(shu)出(chu)壓(ya)(ya)(ya)力(li)(li)(li)(li)必須低(di)于(yu)輸(shu)入(ru)壓(ya)(ya)(ya)力(li)(li)(li)(li)—定(ding)值(zhi)才(cai)基本上不(bu)隨輸(shu)入(ru)壓(ya)(ya)(ya)力(li)(li)(li)(li)變化(hua)而(er)變化(hua)。流(liu)量(liang)特性(xing)是指(zhi)輸(shu)入(ru)壓(ya)(ya)(ya)力(li)(li)(li)(li)—定(ding)時，輸(shu)出(chu)壓(ya)(ya)(ya)力(li)(li)(li)(li)隨輸(shu)出(chu)流(liu)量(liang)g的(de)變化(hua)而(er)變化(hua)的(de)持性(xing)。當流(liu)量(liang)g發生變化(hua)時，輸(shu)出(chu)壓(ya)(ya)(ya)力(li)(li)(li)(li)的(de)變化(hua)越(yue)小越(yue)好。一(yi)般輸(shu)出(chu)壓(ya)(ya)(ya)力(li)(li)(li)(li)越(yue)低(di)，它隨輸(shu)出(chu)流(liu)量(liang)的(de)變化(hua)波(bo)(bo)動(dong)就(jiu)越(yue)小。調(diao)壓(ya)(ya)(ya)范(fan)圍是指(zhi)減壓(ya)(ya)(ya)閥(fa)輸(shu)出(chu)壓(ya)(ya)(ya)力(li)(li)(li)(li)P2的(de)可調(diao)范(fan)圍，在此范(fan)圍內(nei)要求達到規定(ding)的(de)精度。調(diao)壓(ya)(ya)(ya)范(fan)圍主要與(yu)調(diao)壓(ya)(ya)(ya)彈簧的(de)剛度有關。沃爾(er)沃減壓(ya)(ya)(ya)閥(fa)的(de)構造類型很多，以往(wang)常...
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瑞(rui)士佳樂(le)電(dian)(dian)(dian)感接(jie)(jie)近(jin)開(kai)(kai)關(guan)主要(yao)由三大(da)(da)部(bu)分組成：振(zhen)蕩(dang)(dang)器、開(kai)(kai)關(guan)電(dian)(dian)(dian)路及放(fang)大(da)(da)輸出(chu)電(dian)(dian)(dian)路。振(zhen)蕩(dang)(dang)器產生(sheng)一(yi)個交變(bian)磁(ci)場(chang)。當金屬(shu)目標(biao)(biao)接(jie)(jie)近(jin)這一(yi)磁(ci)場(chang)，并達到感應距(ju)離時，在(zai)金屬(shu)目標(biao)(biao)內產生(sheng)渦流，從而(er)導致振(zhen)蕩(dang)(dang)衰減以至停(ting)(ting)振(zhen)。振(zhen)蕩(dang)(dang)器振(zhen)蕩(dang)(dang)及停(ting)(ting)振(zhen)的變(bian)化被后級(ji)放(fang)大(da)(da)電(dian)(dian)(dian)路處理并轉換成開(kai)(kai)關(guan)信號，觸(chu)發驅(qu)動控(kong)制器件，從而(er)達到非接(jie)(jie)觸(chu)式之檢測(ce)目的。瑞(rui)士佳樂(le)電(dian)(dian)(dian)感接(jie)(jie)近(jin)開(kai)(kai)關(guan)可進行非接(jie)(jie)觸(chu)檢測(ce)，避免了對傳感器自身和目標(biao)(biao)物的損壞。無觸(chu)點輸出(chu)，操(cao)作(zuo)壽命長。即使(shi)在(zai)有水或油噴濺的苛刻環境中也(ye)能穩定檢測(ce)。此外(wai)，反應速度快。小型感測(ce)頭，安(an)裝(zhuang)靈活。瑞(rui)士佳樂(le)電(dian)(dian)(dian)...
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沃爾(er)沃減壓(ya)(ya)(ya)(ya)(ya)(ya)閥(fa)是一種(zhong)自動降(jiang)(jiang)低管路(lu)工作(zuo)(zuo)壓(ya)(ya)(ya)(ya)(ya)(ya)力的(de)裝置，它(ta)可將閥(fa)前管路(lu)較高(gao)(gao)的(de)水(shui)(shui)壓(ya)(ya)(ya)(ya)(ya)(ya)減少至(zhi)閥(fa)后管路(lu)所需的(de)水(shui)(shui)平。廣(guang)泛用(yong)于(yu)高(gao)(gao)層建(jian)筑、城市給水(shui)(shui)管網水(shui)(shui)壓(ya)(ya)(ya)(ya)(ya)(ya)過(guo)高(gao)(gao)的(de)區域、礦井(jing)及其(qi)(qi)他場合，以(yi)保證給水(shui)(shui)系(xi)統中各用(yong)水(shui)(shui)點獲(huo)得(de)適當的(de)服(fu)務水(shui)(shui)壓(ya)(ya)(ya)(ya)(ya)(ya)和(he)流量。鑒于(yu)水(shui)(shui)的(de)漏失率和(he)浪費程度幾乎(hu)同(tong)給水(shui)(shui)系(xi)統的(de)水(shui)(shui)壓(ya)(ya)(ya)(ya)(ya)(ya)大(da)小(xiao)成正比，因此(ci)減壓(ya)(ya)(ya)(ya)(ya)(ya)閥(fa)具有改(gai)善系(xi)統運(yun)行工況和(he)潛在節水(shui)(shui)作(zuo)(zuo)用(yong)，據統計其(qi)(qi)節水(shui)(shui)效(xiao)果約(yue)為(wei)30％。沃爾(er)沃減壓(ya)(ya)(ya)(ya)(ya)(ya)閥(fa)的(de)構造類型很多，以(yi)往常見的(de)有薄(bo)膜式、內彈(dan)簧活(huo)塞(sai)式等。基本作(zuo)(zuo)用(yong)原理是靠閥(fa)內流道對水(shui)(shui)流的(de)局部(bu)阻(zu)力降(jiang)(jiang)低水(shui)(shui)壓(ya)(ya)(ya)(ya)(ya)(ya)，水(shui)(shui)壓(ya)(ya)(ya)(ya)(ya)(ya)降(jiang)(jiang)的(de)范圍由連接閥(fa)瓣(ban)的(de)薄(bo)膜...
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穆爾(er)繼(ji)電(dian)(dian)(dian)(dian)器的(de)(de)使用(yong)應注(zhu)意這五點(dian)事(shi)項穆爾(er)繼(ji)電(dian)(dian)(dian)(dian)器一般由鐵(tie)芯、線(xian)圈、銜(xian)鐵(tie)、觸(chu)(chu)點(dian)片等組成的(de)(de)。只要在線(xian)圈兩端加上一定的(de)(de)電(dian)(dian)(dian)(dian)壓，線(xian)圈中就(jiu)會(hui)流(liu)過(guo)一定的(de)(de)電(dian)(dian)(dian)(dian)流(liu)，從而(er)產生電(dian)(dian)(dian)(dian)磁(ci)效應，銜(xian)鐵(tie)就(jiu)會(hui)在電(dian)(dian)(dian)(dian)磁(ci)力吸(xi)引(yin)的(de)(de)作(zuo)(zuo)用(yong)下(xia)克(ke)服返(fan)回彈(dan)簧的(de)(de)拉力吸(xi)向(xiang)鐵(tie)芯，從而(er)帶動(dong)銜(xian)鐵(tie)的(de)(de)動(dong)觸(chu)(chu)點(dian)與(yu)靜觸(chu)(chu)點(dian)（常(chang)開(kai)觸(chu)(chu)點(dian)）吸(xi)合。當線(xian)圈斷電(dian)(dian)(dian)(dian)后，電(dian)(dian)(dian)(dian)磁(ci)的(de)(de)吸(xi)力也隨之消失，銜(xian)鐵(tie)就(jiu)會(hui)在彈(dan)簧的(de)(de)反(fan)作(zuo)(zuo)用(yong)力返(fan)回原來的(de)(de)位(wei)置，使動(dong)觸(chu)(chu)點(dian)與(yu)原來的(de)(de)靜觸(chu)(chu)點(dian)（常(chang)閉(bi)觸(chu)(chu)點(dian)）吸(xi)合。這樣吸(xi)合、釋放，從而(er)達(da)到(dao)了在電(dian)(dian)(dian)(dian)路中的(de)(de)導通、切(qie)斷的(de)(de)目的(de)(de)。穆爾(er)繼(ji)電(dian)(dian)(dian)(dian)器的(de)(de)使用(yong)要注(zhu)意以下(xia)幾點(dian)事(shi)項：1.額(e)定工作(zuo)(zuo)電(dian)(dian)(dian)(dian)壓...
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