寧夏微小流量計值得信賴西安倫騫電器設(shè)備供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="流量計設(shè)置零點（流量計安裝后必須先置零操作）由于電容式力傳感器及阻流件有自重，在流量計安裝時不在水平方位狀況下，需要重新設(shè)置流量計零點。操作程序為：（也可在管道內(nèi)無介質(zhì)流動時直接置零，高溫型及低溫型流量計必須使管道內(nèi)溫度達到工作溫度后置零）"><meta name="keywords" content="寧夏微小流量計,流量計"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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href="http://www.cdcfah.com/cp/third-llyb_liuliangji/">流量計</a>?寧夏微小流量計值得信賴西安倫騫電器設(shè)備供應(yīng)</p><div id="uet4xjv" class="leftbox clearfix"><h1>寧夏微小流量計值得信賴西安倫騫電器設(shè)備供應(yīng)</h1><div id="kebpb8e" class="proBig"><div id="dcj4egx" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332519957626953/9160428.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="hwd4uwd" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332519957626953/9160428.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qpgq27c" 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>陜西省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>寧夏微小流量計,流量計</p><p><span>***更新：</span>2020-10-24 08:23:40</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="apwvc4p" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">西安倫騫電器設(shè)備有限責(zé)任公司</a></p><p><span>聯(lián)系人：</span>付海飛</p><p><span>郵箱: </span>xalunqian@163.com</p><p><span>電話: </span>13891837328</p><p><span>傳真: </span>138_</p><p><span>網(wǎng)址: </span>http://xalunqian.shop.88360.com</p><p><span>手機: </span>138-91837328</p><p><span>地址: </span>高新區(qū)發(fā)展大道25號軍民融合創(chuàng)新港</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="9z7zbvw" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vov4am2" class="box"><p><p style="text-indent:25px">流量計設(shè)置零點（流量計安裝后必須先置零操作）由于電容式力傳感器及阻流件有自重，在流量計安裝時不在水平方位狀況下，需要重新設(shè)置流量計零點。操作程序為：（也可在管道內(nèi)無介質(zhì)流動時直接置零，高溫型及低溫型流量計必須使管道內(nèi)溫度達到工作溫度后置零）a、關(guān)閉流量計下游的閥門；b、緩慢打開流量計上游閥門，使流量計充滿介質(zhì)；c、緩慢打開流量計下游閥門，使流量計運行10分鐘左右； d、關(guān)閉流量計上、下游閥門，并確定管道內(nèi)流量為零；e，寧夏微小流量計，寧夏微小流量計、置零按鍵操作（必須用無任何磁性的工具操作置零鍵，否則置零鍵可能無法操，寧夏微小流量計。大量的投資被用于提升工廠的自動化水平和現(xiàn)場數(shù)據(jù)的采集和實時監(jiān)控，以提升工廠的過程控制效率。寧夏微小流量計</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏微小流量計,流量計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332519957626953/9160428.png"></div><p> 傳播速度差法超聲流量計測量精度已優(yōu)于，有的多聲道超聲流量計的精度已高達士。但由于早期的超聲流量計自身一般不帶標(biāo)準(zhǔn)管道而工業(yè)上所用管路又十分復(fù)雜，使得超聲流量計的測量精度大打折扣;另外，由于工業(yè)現(xiàn)場特別是管路周圍環(huán)境的多樣性和復(fù)雜性，降低了超聲流量計的可靠性和穩(wěn)定性。因此，如何根據(jù)特定的環(huán)境安裝調(diào)試超聲流量計，就成了超聲流量測量領(lǐng)域的一個重要課題。符合規(guī)范的正確安裝，可以更好地體現(xiàn)超聲流量計的精度、可靠性和穩(wěn)定性方面的優(yōu)勢，降低儀表的日常維護工作。以前盛行的外夾裝式超聲流量計使用方便靈活，然而現(xiàn)場應(yīng)用的實際側(cè)量精度，常因工作琉忽，換能器安裝距離及流通面積等測量的誤差而造成梢度下降。不正確的安裝甚至?xí)沟脙x表完全不能工作;因此，安裝換能器對于測量是非常重要環(huán)節(jié):國外競相開發(fā)出經(jīng)實流核準(zhǔn)的高精度帶測量管段的中小口徑超聲流量計，且用雙聲道或多聲道以改善單聲道側(cè)量平均流速的不確定影響量，降低了迎流流速分布影響的敏感度，減少了前后置直管段長度的影響，消除了現(xiàn)場安裝換能器位置的影響，使測量精度提高。橢圓齒輪流量計廠家透明錐形管4用得普遍是由硼硅玻璃制成，習(xí)慣簡稱玻璃管浮子流量計。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏微小流量計,流量計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520922431641/5725344.png"></div><p style="text-indent:25px">流量計是由計量箱和裝在計量箱內(nèi)的一對橢圓齒輪，與上下蓋板構(gòu)成一個密封的初月形空腔(由于齒輪的轉(zhuǎn)動，所以不是一定密封的)作為一次排量的計算單位。當(dāng)被測液體經(jīng)管道進入流量計時，由于進出口處產(chǎn)生的壓力差推動一對齒輪連續(xù)旋轉(zhuǎn)，不斷地把經(jīng)初月形空腔計量后的液體輸送到出口處，橢圓齒輪的轉(zhuǎn)數(shù)與每次排量四倍的乘積即為被測液體流量的總量(原理見圖)。流量計主要是由殼體、計數(shù)器、橢圓齒輪和聯(lián)軸器(分磁性聯(lián)軸器和軸向聯(lián)軸器)等組成。</p><p> 電磁流量計的結(jié)構(gòu)主要由磁路系統(tǒng)、測量導(dǎo)管、電極、外殼、襯里和轉(zhuǎn)換器等部分組成。 </p> <p> 電極：其作用是引出和被測量成正比的感應(yīng)電勢信號。電極一般用非導(dǎo)磁的不銹鋼制成，且被要求與襯里齊平，以便流體通過時不受阻礙。它的安裝位置宜在管道的垂直方向，以防止沉淀物堆積在其上面而影響測量精度。 </p> <p> 外殼：應(yīng)用鐵磁材料制成，是分配制度勵磁線圈的外罩，并隔離外磁場的干擾。 </p> <p> 襯里：在測量導(dǎo)管的內(nèi)側(cè)及法蘭密封面上，有一層完整的電絕緣襯里。它直接接觸被測液體，其作用是增加測量導(dǎo)管的耐腐蝕性，防止感應(yīng)電勢被金屬測量導(dǎo)管管壁短路。襯里材料多為耐腐蝕、耐高溫、耐磨的聚四氟乙烯塑料、陶瓷等。 </p> <p> 轉(zhuǎn)換器：由液體流動產(chǎn)生的感應(yīng)電勢信號十分微弱，受各種干擾因素的影響很大，轉(zhuǎn)換器的作用就是將感應(yīng)電勢信號放大并轉(zhuǎn)換成統(tǒng)一的標(biāo)準(zhǔn)信號并yizhi主要的干擾信號。其任務(wù)是把電極檢測到的感應(yīng)電勢信號Ex經(jīng)放大轉(zhuǎn)換成統(tǒng)一的標(biāo)準(zhǔn)直流信號。應(yīng)用在石化行業(yè)的特殊環(huán)境中，需要堅固耐用的設(shè)計以及防爆認(rèn)證;用戶對直管設(shè)計的科氏流量計的需求等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏微小流量計,流量計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520631328125/4056452.png"></div><p> 在流體中設(shè)置三角柱型旋渦發(fā)生體，則從旋渦發(fā)生體兩側(cè)交替地產(chǎn)生有規(guī)則的旋渦，這種旋渦稱為卡門旋渦，如右圖所示，旋渦列在旋渦發(fā)生體下游非對稱地排列。 </p> <p> 渦街流量計是根據(jù)卡門（Karman）渦街原理測量氣體、蒸汽或液體的體積流量、標(biāo)況的體積流量或質(zhì)量流量的體積流量計。并可作為流量變送器應(yīng)用于自動化控制系統(tǒng)中。 </p> <p> 渦街流量計是應(yīng)用流體振蕩原理來測量流量的，流體在管道中經(jīng)過渦街流量變送器時，在三角柱的旋渦發(fā)生體后上下交替產(chǎn)生正比于流速的兩列旋渦，旋渦的釋放頻率與流過旋渦發(fā)生體的流體平均速度及旋渦發(fā)生體特征寬度有關(guān)，可用下式表示： </p> <p> f=Stv/d </p> <p> 式中:f為旋渦的釋放頻率，Hz；v為流過旋渦發(fā)生體的流體平均速度，m/s；d為旋渦發(fā)生體特征寬度，m；St為斯特羅哈數(shù)，無量綱，它的數(shù)值范圍為0.14－0.27。 </p> <p> St是雷諾數(shù)的函數(shù)，St=f（l/Re）。 </p> <p> 當(dāng)雷諾數(shù)Re在102~105范圍內(nèi)，St值約為0.2，因此，在測量中，要盡量滿足流體的雷諾數(shù)在102~105，旋渦頻率f=0.2v/d。 </p> <p> 由此可知，通過測量旋渦頻率就可以計算出流過旋渦發(fā)生體的流體平均速度v，再由式q=vA可以求出流量q，其中A為流體流過旋渦發(fā)生體的截面積。金屬管浮子流量計為現(xiàn)場智能指示型，有下進上出、左進右出和下進側(cè)出三種安裝形式。插入式電磁流量計推薦</p><p style="text-indent:25px">金屬管浮子流量計具有結(jié)構(gòu)堅固可靠、使用溫度范圍廣、精度高、價格便宜，能使用多種場合的流量測量等特點。寧夏微小流量計</p><p> 智能型電磁流量計傳感器在工藝管道上的安裝：1.智能型電磁流量計測堵管在任何時刻必須完全注滿介質(zhì)，不能在不滿管或空管的情況下正常工作。在介質(zhì)不滿管時，可采用抬高流量計后端出水管高度的方法使介質(zhì)滿管，避免不滿管及氣體附著在電極上。2.管道內(nèi)有真空會損壞流量計的內(nèi)襯，需特別注意。3.流動的正方向應(yīng)與流量計上箭頭所指的正方向一致。4.智能型電磁流量計即可在直管道上安裝，也可以在水平或傾斜管道上安裝，但要求二電極的中心連線處于水平狀態(tài)。5.對于液、固兩相流體，zui好采用垂直安裝，使被測介質(zhì)自上而xialiu動，可使流量計襯里磨損均勻，延長使用壽命。6.流量計在管道法蘭附近確保有足夠的空間，以便安裝和維護。7.若測量管道有振動，在流量計的兩側(cè)應(yīng)有固定的支座。8.測量介質(zhì)為重污染液體的，在旁路管道安裝流量計本體，不中斷工藝運行，即可排空與清流。9.安裝聚四氟乙烯內(nèi)襯的流量計時，連接法蘭的螺栓應(yīng)注意均勻擰緊，否則容易壓壞聚四氟乙烯內(nèi)襯，zui好用力矩扳手。寧夏微小流量計</p><p style="text-indent:25px">西安倫騫電器設(shè)備有限責(zé)任公司致力于儀器儀表，是一家生產(chǎn)型的公司。西安倫騫電器致力于為客戶提供良好的雷達料位計，雷達物位計，壓力變送器，溫度變送器，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造儀器儀表良好品牌。西安倫騫電器立足于全國市場，依托強大的研發(fā)實力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1688079.html</p></div></div></div></div></div><div id="83fhyhd" class="page-right twoColRt"><div id="wvs42mo" class="box01 margin10 clearfix"><h3><a 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