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class="leftbox clearfix"><h1>常州流量計生產(chǎn)廠家誠信為本南儀測控技術(shù)供應(yīng)</h1><div id="8qfj0og" class="proBig"><div id="qzsxqkl" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142264749444/6461272.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="y1glir3" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142264749444/6461272.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qnh5ta3" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>常州流量計生產(chǎn)廠家,流量計</p><p><span>***更新：</span>2021-01-30 04:22:47</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="pbq1ibh" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">南儀測控技術(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: </span>021-61559357</p><p><span>地址: </span>滬閔路1871號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="7luptb1" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="2yrmmzf" class="box"><p><p style="text-indent:25px">傳統(tǒng)電磁流量計用信號電纜的性能主要存在以下缺點和不足：電纜易受電磁干擾，造成傳輸信號不穩(wěn)定。現(xiàn)有電磁流量計主要由流量傳感器、轉(zhuǎn)換顯示器和勵磁電源三大部分組成，其中勵磁電源與流量傳感器一般組裝在一起，常州流量計生產(chǎn)廠家，這樣傳輸信號的信號電纜必然會受勵磁電纜的電磁場干擾，常州流量計生產(chǎn)廠家，影響傳輸信號的穩(wěn)定性。針對這種情況，雖然在電磁流量計工程安裝和應(yīng)用時明確規(guī)定，信號電纜和勵磁電纜必須嚴(yán)格分開（即不能同管敷設(shè)、不能平行敷設(shè)、不能一起絞合），應(yīng)分別單獨穿管敷設(shè)，以進行有效的電磁隔離，但造成安裝敷設(shè)成本較高，常州流量計生產(chǎn)廠家，而且使用不便。低壓損流體――道爾管流量計、文丘里流量計、彎管流量計。常州流量計生產(chǎn)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常州流量計生產(chǎn)廠家,流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142264749444/6461272.png"></div><p style="text-indent:25px">電磁流量計在造紙企業(yè)中的應(yīng)用：篩選漂白工段電磁流量計使用情況：為保證紙張的白度均勻細(xì)致，要添加不同的添加劑、分散劑和漂白劑。與食品工業(yè)中添加劑的使用情況一樣，這些添加液的流量小，腐蝕性強，所以大多數(shù)都選用PTEE襯里和PFA襯里。因為H2O2的強氧化性，所以經(jīng)常被造紙廠選作漂白劑，但H2O2對金屬材料的腐蝕性特別強。出于防腐的考慮，工程師們很喜歡選用Pt作為電極材料。但實際使用的情況證明，當(dāng)過程壓力小于0.3MPa時，Pt電極會同H2O2發(fā)生反應(yīng)，會在電極表面形成一層氣霧，我們稱其為觸媒反應(yīng)。這時輸出信號會有很較**動。但選用鉭（Ta）電極就沒有上述問題了。如果我們在換用NaOH溶液時選用了鉭電極，那么情況就不那么樂觀了，因為堿液會使鉭電極產(chǎn)生表面效應(yīng)。SGAIC校準(zhǔn)實驗室的數(shù)據(jù)表明，鉭電極在測量一般的水時其特點的變動也要超過其他電極數(shù)十倍。小口徑智能電磁流量計安裝時要特別注意同心度。常州流量計生產(chǎn)廠家夾裝型渦輪流量計。傳感器本身無法蘭，靠管道上法蘭夾持住傳感器的兩密封端面，安裝方便。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常州流量計生產(chǎn)廠家,流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142352865915/7487119.png"></div><p style="text-indent:25px">電磁流量計的同相干擾與克制方法：電磁流量計同相干擾工頻干擾或共模干擾，是指在同一瞬間出現(xiàn)在變送器的兩個電極上，并且幅值和相位都相同的干擾信號。當(dāng)流量為零時，即被測液體靜止不動時，所測得的同相信號就是同相干擾信號。防腐型電磁流量計對于同相干擾，克制的方法較多。在變送器方面，將電極和勵磁線圈在幾何形狀、尺寸以及性能參數(shù)上做得均衡對稱，并分別嚴(yán)格屏蔽，以減少電極與勵磁線圈之間的分布電容影響。電磁流量計為了減少地電流造成的同相干擾，在安裝接地線時，要把變送器兩端的管道法蘭盤與轉(zhuǎn)換器的外殼都接在同一點上，以減少同相干擾，但不能完全消除同相干擾。因此，通常還在轉(zhuǎn)換器的前置放大級采用增加了恒流源的差動放大電路，利用差動放大器的高共?？酥票龋惯M入轉(zhuǎn)換器輸入端的同相干擾信號互相抵消而被克制，可以達(dá)到很好的效果。同時，為了避免干擾信號，變送器和轉(zhuǎn)換器之間的信號必須用屏蔽導(dǎo)線傳輸。</p><p style="text-indent:25px">一體化渦街流量計產(chǎn)業(yè)發(fā)展的重要標(biāo)志及發(fā)展機：十二五期間一體化渦街流量計產(chǎn)業(yè)將充滿機遇、挑戰(zhàn)和活力。我國一體化渦街流量計生產(chǎn)企業(yè)，部分骨干企業(yè)采用了壓力機，并相應(yīng)配以操作機械手和多工位熱成形壓力機外，使產(chǎn)業(yè)精度，壽命，鍛件質(zhì)量穩(wěn)定性均受影響。因而一體化渦街流量計產(chǎn)業(yè)也面臨一個國內(nèi)由于儀器產(chǎn)業(yè)的發(fā)展，國際上全球采購的良好發(fā)展機遇。一體化渦街流量計產(chǎn)業(yè)存在行業(yè)概念不清，學(xué)術(shù)概念與行業(yè)概念相混淆的現(xiàn)象。隨著儀器儀表相關(guān)產(chǎn)業(yè)的發(fā)展，儀器儀表的產(chǎn)業(yè)內(nèi)行業(yè)概念越來越清晰，這是一體化渦街流量計產(chǎn)業(yè)發(fā)展的一個重要標(biāo)志。一體化渦街流量計生產(chǎn)企業(yè)加較大企業(yè)的技改，較大力采用打擊能量逐步向手工操作向自動化操作過渡。不斷地加以改造。使我國的一體化渦街流量計產(chǎn)業(yè)在已具備相當(dāng)產(chǎn)能規(guī)模的基礎(chǔ)上，提升整體競爭能力。十二五期間中我國儀器儀表行業(yè)必須注重企業(yè)家、技術(shù)人員和工人隊伍的建設(shè)，倡導(dǎo)學(xué)習(xí)和改造；注重一體化渦街流量計設(shè)備的自制能力建設(shè)；注重阻止低檔次重復(fù)建設(shè)；注重基礎(chǔ)理論技術(shù)和實際應(yīng)用技術(shù)的研究和開發(fā)。非牛頓流體――電磁流量計、科氏力流量計。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常州流量計生產(chǎn)廠家,流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637402711037769862/4139399.png"></div><p style="text-indent:25px">造成電磁流量計誤差的主要影響因素，干擾影響：1、空間電磁干擾：轉(zhuǎn)換器與傳感器問的電纜線較長，在較強電磁環(huán)境下，很易受到干擾，從而引發(fā)儀器測量值出現(xiàn)非線性情況，很難正常顯示。針對這種情況，首先，引入屏蔽措施，可在接地鋼管內(nèi)進行電纜的單獨引入，并使用達(dá)標(biāo)的屏蔽電纜；其次，合理縮短電纜長度；再次，與強磁場保持較遠(yuǎn)距離。2、連接電纜問題：電磁流量應(yīng)用的實質(zhì)是借助特定的電纜，實現(xiàn)轉(zhuǎn)換器與傳感器的連接，形成完整的系統(tǒng)，因此導(dǎo)體的橫截面積、電容、電纜場地等都會產(chǎn)生不良影響。針對該情況，首先，要保證電纜型號滿足要求，實現(xiàn)末端的有效連接，防止出現(xiàn)中間接頭現(xiàn)象；其次，控制長度范圍，通常越短越好流量計聚四氟乙烯PTFE襯里具有優(yōu)良的耐熱耐酸堿性能，表面光滑，不易粘著。溫州渦輪流量計報價</p><p style="text-indent:25px">標(biāo)定：在標(biāo)定狀態(tài)下，通過一系列已知值來確定流量計標(biāo)度的過程。常州流量計生產(chǎn)廠家</p><p style="text-indent:25px">在工業(yè)生產(chǎn)中時常會遇到電磁流量計歸零不穩(wěn)定的狀況，分析產(chǎn)生這個問題的原因有多種，主要有以下幾種因素：1、管道未充液體或液體中含有氣泡客觀上以為流量傳感器內(nèi)無活動而實踐上存在著微量活動。2、閥門運用日久或液體污臟使閥門密閉不全也會導(dǎo)致零點不穩(wěn)定現(xiàn)象的出現(xiàn)。3、液體電導(dǎo)率變化或不平均，在靜止時會使零點變動，活動時使輸出晃動。4、由于內(nèi)壁外表結(jié)垢和電極污穢水平不可能完整一樣和對稱，毀壞了初始調(diào)零設(shè)定的均衡情況。5、流量傳感器左近的電力設(shè)備狀態(tài)的變化(如漏電流增加)構(gòu)成接地電位變化，也會惹起智能電磁流量計零點變動。常州流量計生產(chǎn)廠家</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3074064.html</p></div></div></div></div></div><div id="trztmz8" class="page-right twoColRt"><div id="0dslfyp" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="uzib5bd" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div 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