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class="home-main container clearfix"><div id="f2moqnz" class="twoCol"><div id="7z7jvme" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_dgdq/">電工電氣</a>?<a href="http://www.cdcfah.com/cp/second-dgdq_gydqew/">高壓電器</a>?<a href="http://www.cdcfah.com/cp/third-gydqew_gykggek/">高壓開關(guān)柜</a>?四川渦街流量計(jì)推薦廠家值得信賴成都皖川科技供應(yīng)</p><div id="amtb7g7" class="leftbox clearfix"><h1>四川渦街流量計(jì)推薦廠家值得信賴成都皖川科技供應(yīng)</h1><div id="kcurovx" class="proBig"><div id="cr7w3i9" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349132265625/2309518.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gzeqn8i" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349132265625/2309518.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="jifheip" 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>四川省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>四川渦街流量計(jì)推薦廠家,渦街流量計(jì)</p><p><span>***更新：</span>2020-07-28 19:12:54</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="osp3yol" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">成都皖川科技有限公司</a></p><p><span>聯(lián)系人：</span>朱成生</p><p><span>郵箱: </span>cdwckjgs@sina.com</p><p><span>電話: </span>18755046999</p><p><span>傳真: </span>028_87463776</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>028-87463776</p><p><span>地址: </span>四川省成都市青羊區(qū)青羊萬達(dá)廣場(chǎng)SOHO公寓2-2-1138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="bpml7b4" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ut2jyam" class="box"><p><p> 特點(diǎn) </p> <p> 1、結(jié)構(gòu)簡(jiǎn)單而牢固，無可動(dòng)部件，可靠性高，長(zhǎng)期運(yùn)行十分可靠。 </p> <p> 2、安裝簡(jiǎn)單，維護(hù)十分方便。 </p> <p> 3、檢測(cè)傳感器不直接接觸被測(cè)介質(zhì)，性能穩(wěn)定，壽命長(zhǎng)。 </p> <p> 4、輸出是與流量成正比的脈沖信號(hào)，無零點(diǎn)漂移，精度高。 </p> <p> 5、測(cè)量范圍寬，量程比可達(dá)1：10。壓力損失較小，運(yùn)行費(fèi)用低，更具節(jié)能意義。 </p> <p> 6、在一定的雷諾數(shù)范圍內(nèi)，四川渦街流量計(jì)推薦廠家,輸出信號(hào)頻率不受流體物理性質(zhì)和組份變化的影響，儀表系數(shù)*與旋渦發(fā)生體的形狀和尺寸有關(guān)，測(cè)量流體體積流量時(shí)無需補(bǔ)償，調(diào)換配件后一般無需重新標(biāo)定儀表系數(shù)。應(yīng)用范圍廣，四川渦街流量計(jì)推薦廠家，四川渦街流量計(jì)推薦廠家，蒸汽、氣體、液體的流量均可測(cè)量。四川渦街流量計(jì)推薦廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川渦街流量計(jì)推薦廠家,渦街流量計(jì)" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349132265625/2309518.jpg"></div><p> 選型要點(diǎn) </p> <p> 渦街流量計(jì)正確選型才能保證渦街流量計(jì)更好的使用。選用什么種類的渦街流量計(jì)應(yīng)根據(jù)被測(cè)流體介質(zhì)的物理性質(zhì)和化學(xué)性質(zhì)來決定?使渦街流量計(jì)的通徑、流量范圍、襯里材料、電極材料和輸出電流等都能適應(yīng)被測(cè)流體的性質(zhì)和流量測(cè)量的要求。 </p> <p> 1、精密功能檢查 </p> <p> 精度等級(jí)和功能根據(jù)測(cè)量要求和使用場(chǎng)合選擇儀表精度等級(jí)，做到經(jīng)濟(jì)合算。比如用于貿(mào)易結(jié)算、產(chǎn)品交接和能源計(jì)量的場(chǎng)合，應(yīng)該選擇精度等級(jí)高些，如1.0級(jí)、0.5級(jí)，或者更高等級(jí); </p> <p> 用于過程控制的場(chǎng)合，根據(jù)控制要求選擇不 </p> <p> 同精度等級(jí);有些**是檢測(cè)一下過程流量，無需做精確控制和計(jì)量的場(chǎng)合，可以選擇精度等級(jí)稍低的，如1.5級(jí)、2.5級(jí)，甚至 </p> <p> 4.0級(jí)，這時(shí)可以選用價(jià)格低廉的插入式渦街流量計(jì)。 </p> <p> 2、可測(cè)量的介質(zhì) </p> <p> 測(cè)量介質(zhì)流速、儀表量程與口徑 </p> <p> 測(cè)量一般的介質(zhì)時(shí)，渦街流量計(jì)的滿度流量可以在測(cè)量介質(zhì)流速0.5—12m/s范圍內(nèi) 選用，范圍比較寬。選擇儀表規(guī)格(口徑)不一 </p> <p> 定與工藝管道相同，應(yīng)視測(cè)量流量范圍是否在流速范圍內(nèi)確定，即當(dāng)管道流速偏低，不能滿足流量?jī)x表要求時(shí)或者在此流速下測(cè)量準(zhǔn) </p> <p> 確度不能保證時(shí)，需要縮小儀表口徑，從而提高管內(nèi)流速，得到滿意測(cè)量結(jié)果。四川渦街流量計(jì)推薦廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川渦街流量計(jì)推薦廠家,渦街流量計(jì)" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349011669922/7256332.jpg"></div><p> 原理 </p> <p> 渦街流量計(jì)是根據(jù)卡門渦街原理(Kármán Vortex Street)測(cè)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(jì)。并可作為流量變送器應(yīng)用于自動(dòng)化控制系統(tǒng)中。 </p> <p> 渦街流量計(jì)是應(yīng)用流體振蕩原理來測(cè)量流量的，流體在管道中經(jīng)過渦街流量變送器時(shí)，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：式中：為旋渦的釋放頻率，單位為Hz；v為流過旋渦發(fā)生體的流體平均速度，單位為m/s；d為旋渦發(fā)生體特征寬度，單位為m；St為斯特勞哈爾數(shù)（Strouhal number），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)，當(dāng)雷諾數(shù)Re在范圍內(nèi)，St值約為0.2。在測(cè)量中，要盡量滿足流體的雷諾數(shù)在，此時(shí)旋渦頻率由此，通過測(cè)量旋渦頻率就可以計(jì)算出流過旋渦發(fā)生體的流體平均速度v，再由式可以求出流量q，其中A為流體流過旋渦發(fā)生體的截面積 </p><p> 安裝條件 </p> <p> 傳感器應(yīng)安裝在水平、垂直、傾斜(液體流向自下而上)的與其通徑相同的管道上。傳感器的上游和下2游應(yīng)配置一定長(zhǎng)度的直管段，其長(zhǎng)度應(yīng)符合前直管段15～**，后直管段5～1OD的要求。 </p> <p> 安裝液體傳感器的附近管道內(nèi)應(yīng)充滿被測(cè)液體。 </p> <p> 傳感器應(yīng)避免安裝在有強(qiáng)烈機(jī)械振動(dòng)的管道上。 </p> <p> 直管段的內(nèi)徑盡可能與傳感器通徑一致，若不能一致，應(yīng)采用比傳感器通徑略大的管道，誤差要≤3%，并不超過5mm。 </p> <p> 傳感器應(yīng)避免安裝在有較強(qiáng)電磁場(chǎng)干擾、空間小和維修不方便的場(chǎng)合。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川渦街流量計(jì)推薦廠家,渦街流量計(jì)" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349081816406/9531621.jpg"></div><p> 渦街流量計(jì)也稱之為旋渦流量計(jì)或卡門渦街流量計(jì) </p> <p> 綜合吸收發(fā)達(dá)國(guó)家先進(jìn)技術(shù)和總結(jié)多年研究生產(chǎn)經(jīng)驗(yàn)的基礎(chǔ)上進(jìn)行精心設(shè)計(jì)的產(chǎn)品，實(shí)現(xiàn)了產(chǎn)品智能化、標(biāo)準(zhǔn)化、系列化、通用化、生產(chǎn)模具化、確保產(chǎn)品質(zhì)量的美觀性。該產(chǎn)品具有電路先進(jìn)、功耗微低、量程比寬、結(jié)構(gòu)簡(jiǎn)單、阻力損失小、堅(jiān)固耐用、用途廣、使用壽命長(zhǎng)、工作穩(wěn)定、便于安裝調(diào)試等特點(diǎn)。 </p> <p> <p> 原理 </p> <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，旋渦列在旋渦發(fā)生體下游非對(duì)稱地排列。 </p> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 瀘州渦街流量計(jì)批發(fā)</p><p style="text-indent:25px">四川渦街流量計(jì)推薦廠家</p><p> 檢定周期為二年。 </p> <p> 渦街流量傳感器應(yīng)用內(nèi)徑范圍為25-300mm（滿管式） </p> <p> 插入式渦街流量傳感器應(yīng)用內(nèi)徑范圍為350-1200mm(插入式)。 </p> <p> 滿管式測(cè)量液體精度為1% </p> <p> 測(cè)量蒸汽和氣體精度為1.5% </p> <p> 插入式測(cè)量液體精度為2% </p> <p> 測(cè)量蒸汽和氣體精度為2.5% </p> <p> 被測(cè)介質(zhì)溫度為-20~150℃、-40~250℃、+100~350℃（*管式） </p> <p> 輸出信號(hào)為三線制電壓脈沖，三線制4-20mA、二線制4-20mA。 </p> <p> <br /> </p> <p> 功能 </p> <p> 表體中同時(shí)集成溫壓補(bǔ)償補(bǔ)償功能，可測(cè)量流體的標(biāo)準(zhǔn)體積流量或標(biāo)準(zhǔn)質(zhì)量流量。 </p> <p> 全智能化、數(shù)字化電路設(shè)計(jì)，可自動(dòng)補(bǔ)償被測(cè)流體密度或標(biāo)況體積計(jì)算。 </p> <p> 全新的數(shù)字濾波和修正功能使流量測(cè)量更加精細(xì)可靠。 </p> <p> 電池供電型無需外接電源既可連續(xù)工作兩年以上。 </p> <p> 全新點(diǎn)陣漢字液晶顯示，使用操作更方便。 </p> <p> <br /> </p> <p> <br /> 四川渦街流量計(jì)推薦廠家</p><p style="text-indent:25px">成都皖川科技有限公司致力于儀器儀表，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。公司自2011-12-30成立以來，投身于[ "耐磨熱電偶", "氣體檢測(cè)儀器", "便攜式氣體報(bào)警控制器", "雙金屬溫度計(jì)" 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