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container clearfix"><div id="nmlkh9x" class="twoCol"><div id="hboqi97" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://m.cdcfah.com/">首頁?<a href="http://m.cdcfah.com/cp/">產品供應</a>?<a href="http://m.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://m.cdcfah.com/cp/second-yiqiyibiao_llyb/">流量儀表</a>?<a href="http://m.cdcfah.com/cp/third-llyb_liuliangji/">流量計</a>?渦輪流量計批發(fā) 服務為先南儀測控技術供應</p><div id="yb2xueg" class="leftbox clearfix"><h1>渦輪流量計批發(fā) 服務為先南儀測控技術供應</h1><div id="3roqimy" class="proBig"><div id="nxpmo9x" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142327474870/5073743.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="cbowy9k" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142327474870/5073743.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="2vsu3li" class="content"><p><span>需求數量：</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>產品關鍵詞：</span>渦輪流量計批發(fā),流量計</p><p><span>***更新：</span>2021-02-02 03:11:02</p><p><span id="click" >瀏覽次數：1次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="7yfxzjl" 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(上海)有限公司</a></p><p><span>聯系人：</span>桂經理</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="yiv8gnk" class="page-proshow02"><p class="title">詳細說明</p><div id="8cjbixo" class="box"><p><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、尺寸以及性能參數上做得均衡對稱，并分別嚴格屏蔽，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換器的外殼都接在同一點上，渦輪流量計批發(fā)，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入轉換器輸入端的同相干擾信號互相抵消而被克制，可以達到很好的效果，渦輪流量計批發(fā)。同時，渦輪流量計批發(fā)，為了避免干擾信號，變送器和轉換器之間的信號必須用屏蔽導線傳輸。玻璃轉子流量計結構簡單，操作方便，價格低廉。渦輪流量計批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="渦輪流量計批發(fā),流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142327474870/5073743.png"></div><p style="text-indent:25px">電磁流量計以無壓損、高精度、價格適中等優(yōu)勢，廣受石化、化工等行業(yè)企業(yè)的青睞，在流量計量中擔任著重要的角色。然而在實際應用中，受操作不當、設備選擇不合理、安裝不科學的情況，測量誤差就很難避免，給使用者造成麻煩。總的來說，造成電磁流量計誤差的主要影響因素可以分為三類：選型不當，待測液影響和干擾。造成電磁流量計誤差的主要影響因素，選型不當：1、混合相流體測量：用電磁流量計測量液固混合相流體(如含泥沙的水)的流量時，如果選用由單相液體校準的電磁流量計，則會產生測量誤差，此時應選擇不會引起液固相分離的直管段處安裝傳感器。2、電極及襯里材料選擇：電極及襯里材料直接與待測液體接觸，應根據待測液體的特性(如腐蝕性、磨蝕性等)及工作溫度選擇電極及襯里材料，如選擇不當，則會造成附著速度快、腐蝕、結垢、磨損、襯里變形等問題，進而產生測量誤差。無錫加油站流量計廠家流體噪聲一直是電磁流量計要解決的重要技術問題之一。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="渦輪流量計批發(fā),流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142352865915/7487119.png"></div><p style="text-indent:25px">在過程自動化儀表與裝置中，流量儀表有兩大功用：作為過程自動化控制系統(tǒng)的檢測儀表和測量物料數量的總量表。技術指標：流量上限值：流量計能按規(guī)定精確度測量的大流量。流量下限值：流量計能按規(guī)定精確度測t的小流量。誤差限：流量計誤差的大允許值。量程比：流量計的流量上限值與下限值之比值。標定：在標定狀態(tài)下，通過一系列已知值來確定流量計標度的過程。流通面積：流盤計錐管內徑與浮子工作直徑之間的有效環(huán)隙橫截面積。標定狀態(tài)：標定時流量計上游所處的較全溫度和較全壓力狀態(tài)。精確度等級：玻璃轉子流量計的一種分級，凡屬同一精確度等級的流量計應滿足該類流量計規(guī)定的全部共同精確度要求。示值：流量計指示的容積流量值。</p><p style="text-indent:25px">造成電磁流量計誤差的主要影響因素，待測液體影響待測液體氣泡或非滿管：對于氣泡，主要來源于液體中溶解的氣體發(fā)展為游離狀態(tài)的氣泡和外界吸入的氣泡。包含大量氣泡體積的流量，會影響測量的準確性。若氣泡直徑過大，甚至超過電極直徑的數值，則測量顯示過程中會出現不穩(wěn)定狀態(tài)，波動無法避免。針對這種情況，首先，可將集氣器安裝在電磁流量計上，同時按照周期進行排氣操作；其次，合理更換安裝位置；再次，將垂直管道安裝在電磁流量計上，保障自下而上的方向；第四，安裝傳感器時，避免與排放口距離過近；第五，將傳感器安裝在控制閥位置，處于其上游位置，或泵的下游。從質量流量計技術來看，質量流量計的口徑也越來越大，能在各種大口徑的管道上使用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="渦輪流量計批發(fā),流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637402711069791454/9673165.png"></div><p style="text-indent:25px">電磁流量計測量混合相液體時注意哪些方面：1、大物阻隔網：管道支墩必須要牢靠，位置也要合適。在測量乳液的流量時，為了避免中間管段臟污和堵塞而用的大物阻隔網，應在裝在緊靠電磁流量計法蘭入口的地方。2、沉淀室：沉淀室的作用就是使得被阻隔網阻隔下來的臟物或者其他機械混合物沉淀下來，以便于后面的清洗。以上第三點的大物阻隔網和第四點的沉淀室都是與電磁流量計安裝位置相靠近的，而且是要按照順序安置的。3、定期清洗：電磁流量計測量污水一般不需日常維護，但被測介質容易在電極和測量管內壁粘附或結垢時，須定期清洗測量管內壁和電極，要注意不能使流量計襯里和電極受到損傷。實踐證明，電磁流量計在使用一段實踐后，需要對其管道進行清洗，防止堵塞管道影響測量精度。而且因為乳液是有粘稠度的，所以經常清洗可以有效地去除附著在流量計管壁上的雜質。電磁流量計計量不準的因素是多種多樣的，其中主要的是與環(huán)境密切相關。渦輪流量計批發(fā)</p><p style="text-indent:25px">流量上限值：流量計能按規(guī)定精確度測量的大流量。渦輪流量計批發(fā)</p><p style="text-indent:25px">電磁流量計的傳感器檢查方法與維護技巧：電磁流量計作為一種在流量測量范圍內使用為普遍的儀表，被許多的工業(yè)企業(yè)所喜愛。需要準備的測試設備：萬用表一只、500MΩ絕緣電阻測試儀一臺。測試檢查步驟：（1）在管道充滿介質的情況較，用萬用表測量接線端子A、B與C之間的電阻值，A-C、B-C之間的阻值應較大至相等。若差異在1倍以上，可能是電極出現滲漏、測量管外壁或接線盒內有冷凝水吸附。（2）在襯里干燥情況較，用MΩ表測A-C、B-C之間的絕緣電阻（應較大于200MΩ）。再用萬用表測量端子A、B與測量管內二只電極的電阻（應呈短路連通狀態(tài)）。若絕緣電阻很小，說明電極滲漏，應將整套流量計返廠維修。若絕緣有所較降但仍有50MΩ以上且步驟（1）的檢查結果正常，則可能是測量管外壁受潮，可用熱風機對外殼內部進行烘干。渦輪流量計批發(fā)</p></p><br /><p>文章來源地址: 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