99精品国产在热久久_337P日本欧洲亚洲大胆裸体艺术_97久久婷婷五月综合色D啪蜜芽_18禁男女爽爽爽午夜网站免费

隨著自(zi)動(dong)化(hua)(hua)行(xing)業(ye)和社會公眾安全領域(yu)發(fa)(fa)(fa)展(zhan)的(de)(de)(de)日趨重要(yao)，我國儀(yi)器(qi)(qi)儀(yi)表(biao)行(xing)業(ye)得到了(le)巨大(da)(da)的(de)(de)(de)發(fa)(fa)(fa)展(zhan)。無論從數量上、質(zhi)量上、都滿足了(le)各行(xing)業(ye)的(de)(de)(de)發(fa)(fa)(fa)展(zhan)，并帶動(dong)了(le)材料、機械行(xing)業(ye)的(de)(de)(de)發(fa)(fa)(fa)展(zhan)，早在06年，我國就成為(wei)*于(yu)日本的(de)(de)(de)儀(yi)器(qi)(qi)儀(yi)表(biao)行(xing)業(ye)生產大(da)(da)國。但(dan)與此同(tong)時(shi)，儀(yi)器(qi)(qi)儀(yi)表(biao)行(xing)業(ye)的(de)(de)(de)需求(qiu)市場也(ye)在悄(qiao)然發(fa)(fa)(fa)生變化(hua)(hua)。這些在給(gei)儀(yi)器(qi)(qi)儀(yi)表(biao)市場帶來巨大(da)(da)需求(qiu)的(de)(de)(de)同(tong)時(shi)，也(ye)提出了(le)新(xin)(xin)(xin)的(de)(de)(de)挑(tiao)戰。儀(yi)器(qi)(qi)儀(yi)表(biao)行(xing)業(ye)只有適(shi)應新(xin)(xin)(xin)環(huan)境，不斷推出適(shi)應新(xin)(xin)(xin)環(huan)境的(de)(de)(de)產品，才能獲得更快發(fa)(fa)(fa)展(zhan)。1、技術的(de)(de)(de)變化(hua)(hua)。近年來，智能儀(yi)表(biao)已開始從較為(wei)成熟的(de)(de)(de)數據(ju)處理向知(zhi)識處理發(fa)(fa)(fa)展(zhan)，使其功能向更高...

噪音(yin)計(ji)又叫(噪聲(sheng)(sheng)(sheng)計(ji)、聲(sheng)(sheng)(sheng)級計(ji))是(shi)噪聲(sheng)(sheng)(sheng)測量中基(ji)本的(de)(de)儀器(qi)(qi)(qi)(qi)。聲(sheng)(sheng)(sheng)級計(ji)一般由(you)(you)電容式傳(chuan)聲(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)、前置放(fang)大(da)器(qi)(qi)(qi)(qi)、衰減器(qi)(qi)(qi)(qi)、放(fang)大(da)器(qi)(qi)(qi)(qi)、頻(pin)率計(ji)網(wang)絡(luo)(luo)(luo)以及有效(xiao)值指示(shi)表頭等組成。聲(sheng)(sheng)(sheng)級計(ji)的(de)(de)工作原(yuan)理是(shi)：由(you)(you)傳(chuan)聲(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)將聲(sheng)(sheng)(sheng)音(yin)轉(zhuan)換成電信號，再由(you)(you)前置放(fang)大(da)器(qi)(qi)(qi)(qi)變換阻(zu)抗，使傳(chuan)聲(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)與(yu)衰減器(qi)(qi)(qi)(qi)匹配。放(fang)大(da)器(qi)(qi)(qi)(qi)將輸(shu)出信號加到網(wang)絡(luo)(luo)(luo)，對信號進行頻(pin)率計(ji)權(或外接濾波器(qi)(qi)(qi)(qi))，然后再經衰減器(qi)(qi)(qi)(qi)及放(fang)大(da)器(qi)(qi)(qi)(qi)將信號放(fang)大(da)到一定的(de)(de)幅值，送到有效(xiao)值檢(jian)波器(qi)(qi)(qi)(qi)。噪音(yin)計(ji)中的(de)(de)頻(pin)率計(ji)權網(wang)絡(luo)(luo)(luo)有A、B、C三種標準(zhun)計(ji)權網(wang)絡(luo)(luo)(luo)。A網(wang)絡(luo)(luo)(luo)是(shi)模擬(ni)人(ren)耳對等響曲(qu)線中40方純音(yin)的(de)(de)響應，它(ta)的(de)(de)噪聲(sheng)(sheng)(sheng)計(ji)曲(qu)線形狀與(yu)...

在電子地磅(bang)使(shi)(shi)(shi)用(yong)(yong)(yong)中(zhong)(zhong)紅(hong)外(wai)(wai)(wai)測(ce)溫(wen)(wen)儀的(de)作用(yong)(yong)(yong)是*，因(yin)為電阻應變式(shi)紅(hong)外(wai)(wai)(wai)測(ce)溫(wen)(wen)儀本身是一(yi)種堅固、耐用(yong)(yong)(yong)、可靠的(de)機電產(chan)品，但為了(le)保(bao)證測(ce)試(shi)精度，但電子地磅(bang)在使(shi)(shi)(shi)用(yong)(yong)(yong)中(zhong)(zhong)要(yao)注(zhu)意的(de)問(wen)題，那么使(shi)(shi)(shi)用(yong)(yong)(yong)紅(hong)外(wai)(wai)(wai)測(ce)溫(wen)(wen)儀時(shi)應該注(zhu)意哪些事項呢(ni)?下(xia)面(mian)講述一(yi)些紅(hong)外(wai)(wai)(wai)測(ce)溫(wen)(wen)儀使(shi)(shi)(shi)用(yong)(yong)(yong)必須注(zhu)意到的(de)九個方(fang)面(mian)的(de)問(wen)題：1、紅(hong)外(wai)(wai)(wai)測(ce)溫(wen)(wen)儀周圍應盡量設置一(yi)些“擋(dang)板(ban)”，甚至用(yong)(yong)(yong)薄金屬(shu)板(ban)把測(ce)溫(wen)(wen)儀罩起來。這樣可防(fang)止雜物玷污測(ce)溫(wen)(wen)儀及某些可動(dong)部分，而這種“沾污”往往會(hui)使(shi)(shi)(shi)可動(dong)部分運動(dong)不爽(shuang)，而影響(xiang)稱量精度。系統有無運動(dong)不爽(shuang)現象，可以(yi)(yi)用(yong)(yong)(yong)以(yi)(yi)下(xia)方(fang)法判(pan)別。即(ji)在秤臺上加或減大(da)約千分...

一(yi)、溫(wen)(wen)度(du)(du)(du)(du)的(de)(de)(de)影響運行中(zhong)的(de)(de)(de)電(dian)(dian)力(li)(li)設(she)(she)備(bei)(bei)其溫(wen)(wen)度(du)(du)(du)(du)隨周圍(wei)環境變(bian)(bian)(bian)化(hua)，其絕(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)也是(shi)隨溫(wen)(wen)度(du)(du)(du)(du)而變(bian)(bian)(bian)化(hua)的(de)(de)(de)。一(yi)般情況(kuang)下，絕(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)隨溫(wen)(wen)度(du)(du)(du)(du)升高而降(jiang)(jiang)低。原(yuan)因在于溫(wen)(wen)度(du)(du)(du)(du)升高時，絕(jue)緣(yuan)(yuan)(yuan)介質(zhi)內部離子、分(fen)子運動(dong)加劇(ju)，絕(jue)緣(yuan)(yuan)(yuan)物(wu)內的(de)(de)(de)水分(fen)及其中(zhong)含(han)有的(de)(de)(de)雜質(zhi)、鹽分(fen)等物(wu)質(zhi)也呈擴散(san)趨勢(shi)，使電(dian)(dian)導(dao)增加，絕(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)降(jiang)(jiang)低。這與導(dao)體的(de)(de)(de)電(dian)(dian)阻(zu)隨溫(wen)(wen)度(du)(du)(du)(du)的(de)(de)(de)變(bian)(bian)(bian)化(hua)是(shi)不一(yi)樣(yang)的(de)(de)(de)。不同(tong)的(de)(de)(de)電(dian)(dian)力(li)(li)設(she)(she)備(bei)(bei)及不同(tong)材料(liao)制成(cheng)的(de)(de)(de)電(dian)(dian)力(li)(li)設(she)(she)備(bei)(bei)，其絕(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)隨溫(wen)(wen)度(du)(du)(du)(du)的(de)(de)(de)變(bian)(bian)(bian)化(hua)也不一(yi)樣(yang)，現場測童也很(hen)難保(bao)證在*近似(si)的(de)(de)(de)溫(wen)(wen)度(du)(du)(du)(du)下進(jin)行。為了進(jin)行試驗結果比較，有關(guan)單(dan)位曾給出一(yi)些(xie)設(she)(she)備(bei)(bei)的(de)(de)(de)溫(wen)(wen)度(du)(du)(du)(du)換算系數，但由(you)于設(she)(she)備(bei)(bei)的(de)(de)(de)陳(chen)舊...

直(zhi)(zhi)流(liu)高壓(ya)(ya)發(fa)(fa)生(sheng)器(qi)是許多直(zhi)(zhi)流(liu)耐壓(ya)(ya)試驗，泄漏電(dian)流(liu)試驗的耐壓(ya)(ya)試驗裝(zhuang)置，儀器(qi)操作(zuo)簡單，使用方便，用途十(shi)分廣(guang)泛。但使用直(zhi)(zhi)流(liu)高壓(ya)(ya)發(fa)(fa)生(sheng)器(qi)進(jin)行(xing)試驗時，還是有(you)一些條件要求(qiu)的。以ZGF系列直(zhi)(zhi)流(liu)高壓(ya)(ya)發(fa)(fa)生(sheng)器(qi)為例(li)：1、ZGF-60KV/5mA直(zhi)(zhi)流(liu)高壓(ya)(ya)發(fa)(fa)生(sheng)器(qi)工(gong)(gong)作(zuo)電(dian)源(yuan)(yuan)要求(qiu)為：AC220V±10%,50HZ，工(gong)(gong)作(zuo)電(dian)源(yuan)(yuan)的波(bo)動(dong)會(hui)影響輸出電(dian)壓(ya)(ya)的穩定度(du)，在電(dian)源(yuan)(yuan)電(dian)壓(ya)(ya)在±10%之間波(bo)動(dong)時，電(dian)壓(ya)(ya)穩定度(du)會(hui)產生(sheng)隨(sui)機波(bo)動(dong)，波(bo)動(dong)≤0.5%2、工(gong)(gong)作(zuo)環境溫度(du)：-15℃~50℃，不同的直(zhi)(zhi)流(liu)高壓(ya)(ya)發(fa)(fa)生(sheng)器(qi)對工(gong)(gong)作(zuo)環境...

用(yong)(yong)(yong)兆歐(ou)(ou)表(biao)檢測(ce)高壓電(dian)(dian)(dian)(dian)纜絕緣(yuan)與判(pan)斷故(gu)障(zhang)的(de)方法用(yong)(yong)(yong)2500伏兆歐(ou)(ou)表(biao)測(ce)量每(mei)相(xiang)地埋(mai)線(xian)(xian)的(de)絕緣(yuan)電(dian)(dian)(dian)(dian)阻，如果某相(xiang)對(dui)地絕緣(yuan)電(dian)(dian)(dian)(dian)阻值在30千(qian)(qian)歐(ou)(ou)以(yi)下，則(ze)說明該相(xiang)線(xian)(xian)有(you)接(jie)地點(dian)；當地埋(mai)線(xian)(xian)路(lu)(lu)發生斷芯故(gu)障(zhang)時，可(ke)將地埋(mai)線(xian)(xian)終端的(de)三(san)根相(xiang)線(xian)(xian)和中(zhong)(zhong)性(xing)線(xian)(xian)并(bing)接(jie)起來，用(yong)(yong)(yong)萬(wan)用(yong)(yong)(yong)表(biao)在線(xian)(xian)路(lu)(lu)首端分別測(ce)量每(mei)兩相(xiang)線(xian)(xian)之間(jian)和相(xiang)線(xian)(xian)與中(zhong)(zhong)性(xing)線(xian)(xian)之間(jian)的(de)電(dian)(dian)(dian)(dian)阻。如果電(dian)(dian)(dian)(dian)阻不大，則(ze)說明電(dian)(dian)(dian)(dian)路(lu)(lu)是完好的(de)；如果電(dian)(dian)(dian)(dian)阻值高達數千(qian)(qian)歐(ou)(ou)，則(ze)說明電(dian)(dian)(dian)(dian)路(lu)(lu)有(you)斷芯處(chu)；如果三(san)相(xiang)對(dui)中(zhong)(zhong)性(xing)線(xian)(xian)的(de)電(dian)(dian)(dian)(dian)阻都是很大，而三(san)相(xiang)之間(jian)的(de)電(dian)(dian)(dian)(dian)阻不大，則(ze)可(ke)斷定中(zhong)(zhong)性(xing)線(xian)(xian)有(you)斷芯處(chu)。用(yong)(yong)(yong)萬(wan)用(yong)(yong)(yong)表(biao)測(ce)量每(mei)相(xiang)地埋(mai)線(xian)(xian)的(de)絕緣(yuan)電(dian)(dian)(dian)(dian)阻，高低(di)壓開關柜(ju)通(tong)電(dian)(dian)(dian)(dian)...

試驗(yan)(yan)完畢,首先切斷高(gao)壓(ya)(ya)(ya)電(dian)源,一般需(xu)待試品上(shang)的(de)電(dian)壓(ya)(ya)(ya)降至方(fang)試驗(yan)(yan)電(dian)壓(ya)(ya)(ya)以下,將被試品經(jing)(jing)電(dian)阻(zu)接(jie)(jie)地放(fang)(fang)(fang)電(dian),后(hou)直(zhi)接(jie)(jie)接(jie)(jie)地放(fang)(fang)(fang)電(dian)。對于大容量試品,如(ru)長電(dian)纜、電(dian)容器(qi)(qi)(qi)(qi)、大電(dian)機等(deng),需(xu)放(fang)(fang)(fang)電(dian)5min以上(shang),以使試品上(shang)的(de)充電(dian)電(dian)荷(he)放(fang)(fang)(fang)盡(jin)。另外,對附近電(dian)力(li)設備,有感應(ying)靜(jing)電(dian)電(dian)壓(ya)(ya)(ya)的(de)可能(neng)時,也(ye)應(ying)予(yu)以放(fang)(fang)(fang)電(dian)或事先短接(jie)(jie)。經(jing)(jing)過(guo)充分放(fang)(fang)(fang)電(dian)后(hou),才(cai)能(neng)接(jie)(jie)觸試品。對于在(zai)現場組裝的(de)倍壓(ya)(ya)(ya)整流裝置,要對各級(ji)電(dian)容器(qi)(qi)(qi)(qi)逐級(ji)放(fang)(fang)(fang)電(dian)后(hou),才(cai)能(neng)進行更改接(jie)(jie)線(xian)或結束試驗(yan)(yan),拆除(chu)接(jie)(jie)線(xian)。對電(dian)力(li)電(dian)纜、電(dian)容器(qi)(qi)(qi)(qi)、發(fa)電(dian)機、變壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)等(deng),必須先經(jing)(jing)適當(dang)的(de)放(fang)(fang)(fang)電(dian)電(dian)阻(zu)對試品進行放(fang)(fang)(fang)電(dian)。如(ru)果直(zhi)接(jie)(jie)對地...

在(zai)(zai)電(dian)(dian)(dian)(dian)力行業串(chuan)(chuan)聯(lian)(lian)諧(xie)(xie)(xie)振是(shi)一(yi)種應用(yong)范(fan)圍十分廣泛的(de)(de)(de)實驗裝置。中試電(dian)(dian)(dian)(dian)力作為湖北地區電(dian)(dian)(dian)(dian)力行業的(de)(de)(de)*。對(dui)串(chuan)(chuan)聯(lian)(lian)諧(xie)(xie)(xie)振這一(yi)名詞有(you)(you)著*的(de)(de)(de)見解。隨著科技投入的(de)(de)(de)不斷增加。具(ju)有(you)(you)電(dian)(dian)(dian)(dian)力設備研發資質的(de)(de)(de)企(qi)業在(zai)(zai)日后會更具(ju)有(you)(you)競爭力。那么“串(chuan)(chuan)聯(lian)(lian)諧(xie)(xie)(xie)振”究竟是(shi)什(shen)么呢?在(zai)(zai)電(dian)(dian)(dian)(dian)力企(qi)業日常生(sheng)產應用(yong)中又起(qi)到什(shen)么意義?中試電(dian)(dian)(dian)(dian)力來為您(nin)略說一(yi)二。一(yi)、串(chuan)(chuan)聯(lian)(lian)諧(xie)(xie)(xie)振現象名詞解釋：串(chuan)(chuan)聯(lian)(lian)諧(xie)(xie)(xie)振顧名思(si)義就(jiu)是(shi)在(zai)(zai)電(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)感和(he)電(dian)(dian)(dian)(dian)容的(de)(de)(de)串(chuan)(chuan)聯(lian)(lian)電(dian)(dian)(dian)(dian)路中，出現電(dian)(dian)(dian)(dian)路的(de)(de)(de)端電(dian)(dian)(dian)(dian)壓(ya)和(he)電(dian)(dian)(dian)(dian)路總(zong)電(dian)(dian)(dian)(dian)流(liu)同(tong)(tong)相位的(de)(de)(de)現象，叫做串(chuan)(chuan)聯(lian)(lian)諧(xie)(xie)(xie)振。串(chuan)(chuan)聯(lian)(lian)諧(xie)(xie)(xie)振的(de)(de)(de)特點(dian)是(shi)指電(dian)(dian)(dian)(dian)路呈純電(dian)(dian)(dian)(dian)阻性，端電(dian)(dian)(dian)(dian)壓(ya)和(he)總(zong)電(dian)(dian)(dian)(dian)流(liu)同(tong)(tong)相，此時阻抗...

電(dian)(dian)力(li)測(ce)(ce)(ce)試儀(yi)(yi)器(qi)(qi)(qi)(qi)(qi)用(yong)(yong)來測(ce)(ce)(ce)試設備絕緣性(xing)能(neng)的(de)(de)(de)好(hao)壞以及設備的(de)(de)(de)運(yun)(yun)行狀態，通常常見的(de)(de)(de)建(jian)立檢(jian)(jian)(jian)測(ce)(ce)(ce)儀(yi)(yi)器(qi)(qi)(qi)(qi)(qi)有(you)：高壓開(kai)關(guan)特性(xing)測(ce)(ce)(ce)試儀(yi)(yi)，繼(ji)電(dian)(dian)保護測(ce)(ce)(ce)試儀(yi)(yi)，變(bian)壓器(qi)(qi)(qi)(qi)(qi)直流電(dian)(dian)阻測(ce)(ce)(ce)試儀(yi)(yi)，互感器(qi)(qi)(qi)(qi)(qi)伏安特性(xing)測(ce)(ce)(ce)試儀(yi)(yi)，斷路器(qi)(qi)(qi)(qi)(qi)測(ce)(ce)(ce)試儀(yi)(yi)，大(da)電(dian)(dian)路發生器(qi)(qi)(qi)(qi)(qi)等(deng)等(deng)。這(zhe)些電(dian)(dian)力(li)檢(jian)(jian)(jian)測(ce)(ce)(ce)設備主要用(yong)(yong)于電(dian)(dian)力(li)數據檢(jian)(jian)(jian)測(ce)(ce)(ce)及安全防護的(de)(de)(de)作用(yong)(yong)。那么當電(dian)(dian)力(li)檢(jian)(jian)(jian)測(ce)(ce)(ce)儀(yi)(yi)器(qi)(qi)(qi)(qi)(qi)出現故障了，還將如何(he)去實現工作運(yun)(yun)轉呢？今天講解下有(you)關(guan)電(dian)(dian)力(li)檢(jian)(jian)(jian)測(ce)(ce)(ce)儀(yi)(yi)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)維修(xiu)事宜：在檢(jian)(jian)(jian)修(xiu)過程(cheng)中，首先了解電(dian)(dian)力(li)檢(jian)(jian)(jian)測(ce)(ce)(ce)儀(yi)(yi)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)基本原(yuan)理，要有(you)一個初步(bu)的(de)(de)(de)認識，然(ran)后必須(xu)掌握有(you)關(guan)電(dian)(dian)子方面的(de)(de)(de)知識和技能(neng)，另外應養成一種良好(hao)的(de)(de)(de)工作素(su)質(zhi)，從...

為了您(nin)和設備(bei)的安(an)全(quan)，請(qing)(qing)操作(zuo)人員仔細閱讀以下內容:1.在測量(liang)完感性(xing)負載時不能直接拆(chai)掉(diao)測試線，以免由于電(dian)(dian)(dian)感放(fang)(fang)電(dian)(dian)(dian)危及測試人員和設備(bei)的安(an)全(quan)。本(ben)機(ji)的輸(shu)出端(duan)設有放(fang)(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)路。關閉輸(shu)出時，電(dian)(dian)(dian)感會(hui)(hui)通過(guo)(guo)儀(yi)器泄放(fang)(fang)能量(liang)。一(yi)定(ding)要在放(fang)(fang)電(dian)(dian)(dian)指示完畢后(hou)才能拆(chai)掉(diao)測試線。2.對(dui)于無載調壓(ya)變(bian)壓(ya)器，不允許測量(liang)過(guo)(guo)程(cheng)中切換分接開關。3.測量(liang)過(guo)(guo)程(cheng)中如果電(dian)(dian)(dian)源(yuan)突然(ran)斷電(dian)(dian)(dian)，本(ben)機(ji)會(hui)(hui)自動開始放(fang)(fang)電(dian)(dian)(dian)，請(qing)(qing)不要立刻拆(chai)卸接線，至少等待(dai)30秒鐘后(hou)才可拆(chai)卸接線。4.測量(liang)時，其他未測試的繞組(zu)請(qing)(qing)勿(wu)短路接地，否則會(hui)(hui)導致變(bian)壓(ya)器充(chong)磁過(guo)(guo)程(cheng)變(bian)慢，數(shu)據穩定(ding)時間(jian)延長。...