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href="http://www.cdcfah.com/cp/third-gydqew_gykggek/">高壓開關(guān)柜</a>?雅安渦街流量計哪家專業(yè) 客戶至上成都皖川科技供應(yīng)</p><div id="mfrizlh" class="leftbox clearfix"><h1>雅安渦街流量計哪家專業(yè) 客戶至上成都皖川科技供應(yīng)</h1><div id="m32axrs" class="proBig"><div id="p4uyzg7" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349011669922/7256332.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="s9ok78j" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349011669922/7256332.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="2eamiul" 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>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>雅安渦街流量計哪家專業(yè),渦街流量計</p><p><span>***更新：</span>2020-11-12 01:07:16</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="77tpl3d" 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="tfwdpgx" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="7rdmtk8" class="box"><p><p> 安裝條件 </p> <p> 傳感器應(yīng)安裝在水平，雅安渦街流量計哪家專業(yè)、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)配置一定長度的直管段，其長度應(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)充滿被測液體。 </p> <p> 傳感器應(yīng)避免安裝在有強(qiáng)烈機(jī)械振動的管道上。 </p> <p> 直管段的內(nèi)徑盡可能與傳感器通徑一致，雅安渦街流量計哪家專業(yè)，雅安渦街流量計哪家專業(yè)，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)電磁場干擾、空間小和維修不方便的場合。雅安渦街流量計哪家專業(yè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雅安渦街流量計哪家專業(yè),渦街流量計" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349011669922/7256332.jpg"></div><p> 選型要點(diǎn) </p> <p> 渦街流量計正確選型才能保證渦街流量計更好的使用。選用什么種類的渦街流量計應(yīng)根據(jù)被測流體介質(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)被測流體的性質(zhì)和流量測量的要求。 </p> <p> 1、精密功能檢查 </p> <p> 精度等級和功能根據(jù)測量要求和使用場合選擇儀表精度等級，做到經(jīng)濟(jì)合算。比如用于貿(mào)易結(jié)算、產(chǎn)品交接和能源計量的場合，應(yīng)該選擇精度等級高些，如1.0級、0.5級，或者更高等級; </p> <p> 用于過程控制的場合，根據(jù)控制要求選擇不 </p> <p> 同精度等級;有些**是檢測一下過程流量，無需做精確控制和計量的場合，可以選擇精度等級稍低的，如1.5級、2.5級，甚至 </p> <p> 4.0級，這時可以選用價格低廉的插入式渦街流量計。 </p> <p> 2、可測量的介質(zhì) </p> <p> 測量介質(zhì)流速、儀表量程與口徑 </p> <p> 測量一般的介質(zhì)時，渦街流量計的滿度流量可以在測量介質(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，不能滿足流量儀表要求時或者在此流速下測量準(zhǔn) </p> <p> 確度不能保證時，需要縮小儀表口徑，從而提高管內(nèi)流速，得到滿意測量結(jié)果。雅安渦街流量計哪家專業(yè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雅安渦街流量計哪家專業(yè),渦街流量計" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349132265625/2309518.jpg"></div><p> 渦街流量計也稱之為旋渦流量計或卡門渦街流量計 </p> <p> 綜合吸收發(fā)達(dá)國家先進(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)簡單、阻力損失小、堅固耐用、用途廣、使用壽命長、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)生體下游非對稱地排列。 </p> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </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> 滿管式測量液體精度為1% </p> <p> 測量蒸汽和氣體精度為1.5% </p> <p> 插入式測量液體精度為2% </p> <p> 測量蒸汽和氣體精度為2.5% </p> <p> 被測介質(zhì)溫度為-20~150℃、-40~250℃、+100~350℃（*管式） </p> <p> 輸出信號為三線制電壓脈沖，三線制4-20mA、二線制4-20mA。 </p> <p> <br /> </p> <p> 功能 </p> <p> 表體中同時集成溫壓補(bǔ)償補(bǔ)償功能，可測量流體的標(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，可自動補(bǔ)償被測流體密度或標(biāo)況體積計算。 </p> <p> 全新的數(shù)字濾波和修正功能使流量測量更加精細(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 /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雅安渦街流量計哪家專業(yè),渦街流量計" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349449208984/8611731.jpg"></div><p> 原理 </p> <p> 渦街流量計是根據(jù)卡門渦街原理(Kármán Vortex Street)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：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。在測量中，要盡量滿足流體的雷諾數(shù)在，此時旋渦頻率由此，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)生體的截面積雅安渦街流量計哪家專業(yè)</p><p style="text-indent:25px">雅安渦街流量計哪家專業(yè)</p><p style="text-indent:25px">儀器儀表行業(yè)飛速發(fā)展一是因?yàn)槲覈慕?jīng)濟(jì)高速穩(wěn)定發(fā)展的運(yùn)行;按照過去的經(jīng)驗(yàn)，如果GDP的增長在10%以上時，儀表行業(yè)的增長率則在26%～30%之間。二是因?yàn)槲覈暧^調(diào)控對儀表行業(yè)的影響有一個滯后期，儀表往往在工程的后期才交付使用，因此，因宏觀調(diào)控政策而減少的收入對儀表行業(yè)的影響不會太大。隨著網(wǎng)絡(luò)消費(fèi)的不斷遞增，而互聯(lián)網(wǎng)的的商業(yè)價值不斷被挖掘出來，呈爆發(fā)式增長，傳統(tǒng)的營銷模式將逐步被取代。有限責(zé)任公司（自然）企業(yè)要抓住機(jī)遇，融入到互聯(lián)網(wǎng)發(fā)展的行業(yè)中，為行業(yè)的發(fā)展提高競爭力。耐磨熱電偶，氣體檢測儀器，便攜式氣體報警控制器，雙金屬溫度計產(chǎn)業(yè)是國民經(jīng)濟(jì)的基礎(chǔ)性、戰(zhàn)略性產(chǎn)業(yè)，是信息化和工業(yè)化深度融合的源頭，對促進(jìn)工業(yè)轉(zhuǎn)型升級、發(fā)展戰(zhàn)略性新興產(chǎn)業(yè)、推動現(xiàn)代**建設(shè)、保證和提高大家生活水平具有重要作用。隨著中國的不斷進(jìn)步，世界上只有一個救世主——市場，能救企業(yè)的只有你自己——自強(qiáng)，提高貿(mào)易型重點(diǎn)競爭力才是中國制造業(yè)的獨(dú)一出路。以顯微科學(xué)儀器行業(yè)的發(fā)展與變化為例，以親身的實(shí)踐為例，毛磊認(rèn)為，隨著經(jīng)濟(jì)的不斷發(fā)展，我國的環(huán)境和實(shí)力都發(fā)生了巨大變化，有了完全不同的基礎(chǔ)，這為國產(chǎn)科學(xué)儀器走向**增強(qiáng)了信心。雅安渦街流量計哪家專業(yè)</p><p style="text-indent:25px">成都皖川科技有限公司是一家研發(fā)、銷售計算機(jī)軟硬件;計算機(jī)系統(tǒng)集成;銷售電子產(chǎn)品、儀器儀表、電氣設(shè)備、機(jī)械設(shè)備、閥門、水泵、電線電纜、通訊器材(不含無線廣播電視發(fā)射及衛(wèi)星地面接收設(shè)備)、醫(yī)療器械(***一類)、實(shí)驗(yàn)設(shè)備、化工產(chǎn)品(不含危險化學(xué)品)、五金交電、照明設(shè)備。的公司，是一家集研發(fā)、設(shè)計、生產(chǎn)和銷售為一體的專業(yè)化公司。成都皖川科技擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團(tuán)隊，以高度的專注和執(zhí)著為客戶提供耐磨熱電偶，氣體檢測儀器，便攜式氣體報警控制器，雙金屬溫度計。成都皖川科技致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗(yàn)。成都皖川科技創(chuàng)始人朱成生，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1948721.html</p></div></div></div></div></div><div id="jkbizlc" class="page-right twoColRt"><div id="8f3jqse" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="xzvhtac" 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(qiáng) 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