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href="http://www.cdcfah.com/cp/third-llyb_liuliangji/">流量計</a>?紹興加油站流量計哪家好推薦咨詢南儀測控技術(shù)供應(yīng)</p><div id="mekqscy" class="leftbox clearfix"><h1>紹興加油站流量計哪家好推薦咨詢南儀測控技術(shù)供應(yīng)</h1><div id="awium08" class="proBig"><div id="2cgaoy4" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142465523533/8497638.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="o2s0m4c" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142465523533/8497638.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qo2g2ac" 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>紹興加油站流量計哪家好,流量計</p><p><span>***更新：</span>2021-02-03 05:20:54</p><p><span id="click" >瀏覽次數(shù)：17次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="4ym4c0i" 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="csiu4a2" class="page-proshow02"><p class="title">詳細說明</p><div id="4cuc4ss" class="box"><p><p style="text-indent:25px">電磁流量計磁場邊緣效應(yīng)對測量有什么影響：若是沿流體流動方向上的磁場始終是均勻的，在實際時，這就意味著沿著管軸方向的磁場是無限長的，而實際上電磁流量計磁場是有限長的，所以就要考慮到有限長磁場所產(chǎn)生的邊緣效果對測量的影響。如果電磁流量計管壁是絕緣的，其電極附近磁場大多都是均勻的，兩端則是會逐漸的減弱，會形成不均勻的邊緣，紹興加油站流量計哪家好，后就會下降至零。這樣使其液體內(nèi)部電場也會不均勻，紹興加油站流量計哪家好，紹興加油站流量計哪家好，將是會產(chǎn)生有渦電流，因為渦電路所產(chǎn)生的二次磁通反過來會改變磁場邊緣部分的工作磁通，會使磁場的均勻性遭受到破壞。誤差限：流量計誤差的大允許值。紹興加油站流量計哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="紹興加油站流量計哪家好,流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142465523533/8497638.png"></div><p style="text-indent:25px">電磁流量計的特點：1、電磁流量計的傳感器結(jié)構(gòu)簡單，測量管內(nèi)沒有可動部件，也沒有任何阻礙流動體流動動的節(jié)流動部件。所以當流動體通過流量計時不會引起任何附加的壓力損失，是流量計中運行能耗低的流量儀表之一。2、可測量贓污介質(zhì)、腐蝕性介質(zhì)及懸濁性液固兩相流動的流量。這是由于儀表測量管內(nèi)部無阻礙流動動部件，與被測流動體接觸的只是測量管內(nèi)襯和電極，其材料可根據(jù)被測流動體的性質(zhì)來選擇。例如，用聚三氟乙烯或聚四氟乙烯做內(nèi)襯，可測量各種酸、堿、鹽等腐蝕性介質(zhì)；采用耐磨橡膠做內(nèi)襯，就特別適合于測量帶有固體顆粒的、磨損較較大的礦漿、水泥漿等液固兩相流動以及各種帶纖維液體和紙漿等懸濁液體。紹興加油站流量計哪家好金屬管轉(zhuǎn)子流量計是變面積式流量計的一種。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="紹興加油站流量計哪家好,流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142302835889/3702973.png"></div><p style="text-indent:25px">電磁流量計是有由傳感器和轉(zhuǎn)換器兩部分構(gòu)成。它是基于法拉第電磁感應(yīng)定律工作的，用來測量電導(dǎo)率大于5μS/cm導(dǎo)電液體的體積流量，是一種測量導(dǎo)電介質(zhì)體積流量的感應(yīng)式儀表。除可測量一般導(dǎo)電液體的體積流量外，還可用于測量強酸強堿等強腐蝕液體和泥漿、礦漿、紙漿等均勻的液固兩相懸浮液體的體積流量。普遍應(yīng)用于石油、化工、冶金、輕紡、造紙、環(huán)保、食品等工業(yè)部門及市政管理，水利建設(shè)、河流疏浚等領(lǐng)域的流量計量。電磁流量計有以下特點：1、全數(shù)字量處理，抗干擾能力強，測量可靠，精度高、流量測量范圍可達150：1。2、較低EMI開關(guān)電源，適用電源電壓變化范圍大，抗EMI性能好。3、采用16位嵌入式微處理器，運算速度快,精度高，可編程頻率低頻矩形波勵磁，提高了流量測量的穩(wěn)定性，功耗低。</p><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：配漿后的篩選過程即為習(xí)稱的抄紙過程。在這超過程中紙漿濃度常影響流量測量。我們發(fā)現(xiàn)濃度大于3%的紙漿在用常規(guī)的低頻方波勵磁頻率（如25Hz）或雙頻勵磁以改善晃動現(xiàn)象。以DN300的電磁流量計測量濃度3.5%的瓦楞板紙為例，用常規(guī)的1/32工頻時，瞬時流量的晃動量高達10.7%，當選用頻率可改的電磁流量計將其勵磁頻率改動到1/2工頻時，晃動量即改善到1.9%，效果十分明顯。在抄紙工段，由于配漿、抄紙過程中需要對冷卻水、明礬和滑石粉等作流量監(jiān)測，所以其使用數(shù)量在造紙廠中國多，在本例中達到200套左右。電磁流量計是有由傳感器和轉(zhuǎn)換器兩部分構(gòu)成。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="紹興加油站流量計哪家好,流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400217061148192/8862408.png"></div><p style="text-indent:25px">電磁流量計和超聲波流量計的主要區(qū)別，安裝、維護、檢定成本不同：超聲波流量計適用于較大型圓形管道和矩形管道，且原理上不受管徑限制，其造價基本上與管徑無關(guān)。對于較大型管道不僅帶來方便，可認為在無法實現(xiàn)實流動校驗的情況較是優(yōu)先考慮的選擇方案。超聲流量計可作非接觸測量。夾裝式換能器超聲流量計可無需停流動截管安裝，只要在既設(shè)管道外部安裝換能器即可。這是超聲流量計在工業(yè)用流量儀表中具有的獨特優(yōu)點，因此可作移動性(即非定點固定安裝)測量，適用于管網(wǎng)流動動狀況評估測定超聲流量計為無流動動阻撓測量，無額外壓力損失。電磁流量計具有RS485、RS232、Hart和Modbus等數(shù)字通訊信號輸出。紹興加油站流量計哪家好</p><p style="text-indent:25px">流體噪聲一直是電磁流量計要解決的重要技術(shù)問題之一。紹興加油站流量計哪家好</p><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(shù)量的總量表。技術(shù)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(nèi)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(zhuǎn)子流量計的一種分級，凡屬同一精確度等級的流量計應(yīng)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。紹興加油站流量計哪家好</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3135447.html</p></div></div></div></div></div><div id="0o42o4g" class="page-right twoColRt"><div id="6wsgc4o" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="uee24c4" 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" 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