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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142412661529/1294224.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ti3lnur" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142412661529/1294224.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="uds4mev" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>寧波投入式流量計(jì),流量計(jì)</p><p><span>***更新：</span>2021-01-27 07:10:43</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="bldnf73" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">南儀測(cè)控技術(shù)(上海)有限公司</a></p><p><span>聯(lián)系人：</span>桂經(jīng)理</p><p><span>郵箱: </span>704766500@qq.com</p><p><span>電話: </span>17802114401</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>https://www.nanicontrol.com</p><p><span>手機(jī): </span>021-61559357</p><p><span>地址: </span>滬閔路1871號(hào)9甲幢4樓407室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="kelvxel" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="oikmjvs" class="box"><p><p style="text-indent:25px">電磁流量計(jì)按故障外界源頭分析來(lái)自3個(gè)方面：①管道系統(tǒng)和安裝等方面引起的；②環(huán)境方面引起的；③流體方面引起的。1、管道系統(tǒng)和安裝等方面：通常是電磁流量傳感器安裝位置不正確引起的故障，常見(jiàn)的例如將流量傳感器安裝在易積聚潴留氣體的管網(wǎng)高點(diǎn)；流量傳感器后無(wú)背壓，液體逕直排人大氣，形成其測(cè)量管內(nèi)非滿管；裝在自上向的垂直管道上，寧波投入式流量計(jì)，可能出現(xiàn)排空等。2、環(huán)境方面：主要是管道雜散電流干擾，空間電磁波干擾，大電機(jī)磁場(chǎng)干擾等。管道雜散電流干擾通常采取良好單獨(dú)接地保護(hù)可獲得滿意測(cè)量，但如遇管道有強(qiáng)雜散電流亦不一定能克服，寧波投入式流量計(jì)，須采取流量傳感器與管道緣絕的措施，寧波投入式流量計(jì)。電磁流量計(jì)兼容液體、氣體、導(dǎo)熱油以及蒸汽計(jì)量。寧波投入式流量計(jì)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波投入式流量計(jì),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142412661529/1294224.png"></div><p style="text-indent:25px">電磁流量計(jì)液體方面（如液體電導(dǎo)率均勻性,電極污染等問(wèn)題）的原因：液體電導(dǎo)率變化或不均勻,在靜止時(shí)會(huì)使零點(diǎn)變動(dòng),流動(dòng)時(shí)使輸出晃動(dòng)。因此流量計(jì)位置應(yīng)遠(yuǎn)離注入藥液點(diǎn)或管道化學(xué)反應(yīng)段下游,流量傳感器裝在這些場(chǎng)所的上游。液體若含有固相,或雜質(zhì)沉積測(cè)量管內(nèi)壁，或在測(cè)量管內(nèi)壁結(jié)垢，或電極被油脂等污穢等等,均有可能出現(xiàn)零點(diǎn)變動(dòng)。因?yàn)閮?nèi)壁表面結(jié)垢和和電極污穢程度不可能完全一樣和對(duì)稱，破壞廠初始凋零設(shè)定的平衡狀況.積極措施足除去污穢和沉積垢層;若零伙變動(dòng)不大也可嘗試重新調(diào)零。檢查電極接觸電阻和電極絕緣電阻分2步進(jìn)行：（1）充滿液體測(cè)量電極表面勺液體接觸電阻流量傳感器卸下信號(hào)電纜接線,用萬(wàn)用表分別測(cè)量每電極與接地點(diǎn),間的電阻,兩電極對(duì)地電姐值之左應(yīng)在10％－20％.第九節(jié)中"一/電極接觸電阻的測(cè)量"將有進(jìn)一步說(shuō)明。（2）空管測(cè)量電極絕緣放空測(cè)量管,用干布揩于內(nèi)表面,待完全干燥后,用H500VDC兆歐表測(cè)量各電極與地間的電阻們,阻值必須在100MΩ以上。寧波投入式流量計(jì)電磁流量計(jì)采用SMD器件和表面貼裝（SMT）技術(shù)，電路可靠性高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波投入式流量計(jì),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142352865915/7487119.png"></div><p style="text-indent:25px">智能電磁流量計(jì)維護(hù)之定期檢查傳感器電性能：首先，粗略地測(cè)量電極間電阻。斷開傳感器與轉(zhuǎn)換器間信號(hào)連線，傳感器內(nèi)充滿液體，用萬(wàn)用表測(cè)量?jī)呻姌O與接地端的電阻值，是否在制造廠規(guī)定值范圍內(nèi)，且所測(cè)得兩值較大體相同。記錄較靠前測(cè)量的電阻值，此值對(duì)以后判斷傳感器故障原因（如沉積層是導(dǎo)電的還是絕緣的）是有用的。其次，將傳感器放空液體，擦凈內(nèi)壁，待完全干燥后用兆歐計(jì)測(cè)量?jī)呻姌O和接地端子間的電阻。后，檢查激磁線圈絕緣電阻，卸較傳感器激磁線圈，將端子與轉(zhuǎn)換器間接線，用兆歐計(jì)測(cè)量線圈的絕緣電阻。</p><p style="text-indent:25px">流量計(jì)又分為有差壓式流量計(jì)、轉(zhuǎn)子流量計(jì)、節(jié)流動(dòng)式流量計(jì)、細(xì)縫流量計(jì)、容積流量計(jì)、電磁流量計(jì)、超聲波流量計(jì)等。按介質(zhì)分類：液體流量計(jì)和氣體流量計(jì)。流量計(jì)外表選型的過(guò)程是怎樣的？1、依據(jù)流動(dòng)體種類及五個(gè)方面考慮要素初選可用外表類型(要有幾種類型以便進(jìn)行選擇)；2、對(duì)初選類型進(jìn)行資料及價(jià)格信息的收集，為深化的分析比較準(zhǔn)備條件；3、采用淘汰法逐漸集中到1～2種類型，對(duì)五個(gè)方面要素要重復(fù)比較分析*終確認(rèn)預(yù)選方針。阿牛巴流量計(jì)首要用于工業(yè)過(guò)程中各種動(dòng)力如液體、燃料氣、蒸氣和氣體的丈量，具有較高的穩(wěn)定性和重復(fù)性。阿牛巴流量計(jì)設(shè)計(jì)理論契合伯努利方程原理，經(jīng)過(guò)歐盟CE質(zhì)量認(rèn)證，經(jīng)過(guò)自動(dòng)化設(shè)計(jì)技術(shù)專利注冊(cè)。阿牛巴流量計(jì)的調(diào)試闡明。1、接上信號(hào)線、電源線。2、敞開進(jìn)口、出口閥門，進(jìn)出口閥門開度要共同。3、打開不銹鋼三閥組平衡閥，緩慢敞開孔板高低壓端的閥門，待流動(dòng)體經(jīng)過(guò)流量計(jì)后關(guān)閉不銹鋼三閥組平衡閥即可。污水流量計(jì)使用的直管段還要注意不能有負(fù)壓，以防止襯里材料脫落。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波投入式流量計(jì),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142236116619/4092847.png"></div><p style="text-indent:25px">電磁流量計(jì)常見(jiàn)的錯(cuò)誤安裝方式有哪些？關(guān)于安裝方位：1、保證以下所需的進(jìn)口和出口直管段以確保測(cè)量精度：入口長(zhǎng)度>10×DN出口長(zhǎng)度>5×DN傳感器及變送器接地傳感器處于管道中心位置。2、接地：傳感器及介質(zhì)必須有相同的電勢(shì)用來(lái)保證測(cè)量精度及避免電極地腐蝕破壞。等電勢(shì)通過(guò)在傳感器內(nèi)裝地參考電極保證。如果介質(zhì)在無(wú)襯里并接地地金屬管中流動(dòng)，它可通過(guò)連接到變送器外殼而滿足接地要求。對(duì)于分離型地接地同上一樣。注意：如果不能確定介質(zhì)地正確接地與否應(yīng)安裝接地環(huán)。請(qǐng)參照如下所示的位置安裝流量計(jì)：1、電磁流量計(jì)應(yīng)安裝在水平管道較低處和垂直向上處，避免安裝在管道的高點(diǎn)和垂直下處。2、應(yīng)安裝在管道的上升處。3、在開口排放的管道安裝，應(yīng)安裝在管道的較低處。4、若管道落差超過(guò)5m，在流量計(jì)的下游安裝排氣閥。5、應(yīng)在流量計(jì)的下游安裝控制閥和切斷閥，而不應(yīng)安裝在傳感器上游。6、流量計(jì)較全不能安裝在泵的進(jìn)口處，應(yīng)安裝在泵的出口處。電磁流量計(jì)在現(xiàn)場(chǎng)可根據(jù)用戶實(shí)際需要在線修改量程。寧波投入式流量計(jì)</p><p style="text-indent:25px">污水流量計(jì)只有測(cè)量導(dǎo)電的液體介質(zhì)。寧波投入式流量計(jì)</p><p style="text-indent:25px">電磁流量計(jì)和超聲波流量計(jì)的主要區(qū)別，準(zhǔn)確度不同：超聲波流量計(jì)是通過(guò)測(cè)量流體速度來(lái)確定體積流量，對(duì)液體應(yīng)該測(cè)量它的質(zhì)量流量，儀表測(cè)量質(zhì)量流量是通過(guò)體積流量乘以人為設(shè)定的密度后得到的，當(dāng)流體溫度變化時(shí)，流體密度是變化的，人為設(shè)定密度值，不能保證質(zhì)量流量的準(zhǔn)確度。只能在測(cè)量流體速度的同時(shí)，又測(cè)量了流體密度，才能通過(guò)運(yùn)算，得到真實(shí)質(zhì)量流量值。超聲波流量計(jì)和電磁流量計(jì)的測(cè)量媒介不同，超聲波是采用聲波，頻率很低，超聲波頻率20KHz-100KHz，雷達(dá)是采用2.4GHz級(jí)別的電磁波，超聲波的限制性比較大，很容易受到其它鐵制物體的干擾，另外頻率低，衰減大，測(cè)量范圍小，應(yīng)用的面比較窄，常用在大口徑的水管線的流量測(cè)量和明渠類流量計(jì)測(cè)液位來(lái)?yè)Q算成流量。也有用在固體料倉(cāng)上的。電磁的頻率高，衰減小，如果加上導(dǎo)波管測(cè)量范圍可以很大，用在儲(chǔ)罐上比較多。但是需要注意介電常數(shù)，介電常數(shù)太小的介質(zhì)沒(méi)法測(cè)或測(cè)量范圍很小。寧波投入式流量計(jì)</p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/3032894.html</p></div></div></div></div></div><div id="wgi3nu2" class="page-right twoColRt"><div id="eifcjlp" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="hwyl2b8" class="recomPic likePro"><a 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