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clearfix"><h1>雅安渦街流量計(jì)價格服務(wù)為先成都皖川科技供應(yīng)</h1><div id="3ieveqw" class="proBig"><div id="vszlct7" 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="jqgdi3c" 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="lyk8yza" 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(jì)價格,渦街流量計(jì)</p><p><span>***更新：</span>2020-09-25 08:10:04</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="iampvgr" 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="3dduuwc" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8wcyeag" class="box"><p><p> 特點(diǎn) </p> <p> 1、結(jié)構(gòu)簡單而牢固，無可動部件，可靠性高，長期運(yùn)行十分可靠。 </p> <p> 2、安裝簡單，維護(hù)十分方便。 </p> <p> 3、檢測傳感器不直接接觸被測介質(zhì)，性能穩(wěn)定，壽命長。 </p> <p> 4、輸出是與流量成正比的脈沖信號，無零點(diǎn)漂移，精度高，雅安渦街流量計(jì)價格。 </p> <p> 5、測量范圍寬，量程比可達(dá)1：10，雅安渦街流量計(jì)價格。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),輸出信號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)，測量流體體積流量時無需補(bǔ)償，雅安渦街流量計(jì)價格，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，蒸汽、氣體、液體的流量均可測量。雅安渦街流量計(jì)價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雅安渦街流量計(jì)價格,渦街流量計(jì)" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349132265625/2309518.jpg"></div><p> 渦街流量計(jì)是根據(jù)卡門（Karman）渦街原理研究生產(chǎn)的測量氣體、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(jì)。主要用于工業(yè)管道介質(zhì)流體的流量測量，如氣體、液體、蒸汽等多種介質(zhì)。其特點(diǎn)是壓力損失小，量程范圍大，精度高，在測量工況體積流量時幾乎不受流體密度、壓力、溫度、粘度等參數(shù)的影響。無可動機(jī)械零件，因此可靠性高，維護(hù)量小。儀表參數(shù)能長期穩(wěn)定。渦街流量計(jì)采用壓電應(yīng)力式傳感器，可靠性高，可在-20℃～+250℃的工作溫度范圍內(nèi)工作。有模擬標(biāo)準(zhǔn)信號，也有數(shù)字脈沖信號輸出，容易與計(jì)算機(jī)等數(shù)字系統(tǒng)配套使用，是一種比較先進(jìn)、理想的測量儀器。 </p> <p> <br /> 廣元渦街流量計(jì)供應(yīng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雅安渦街流量計(jì)價格,渦街流量計(jì)" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349011669922/7256332.jpg"></div><p> 注意事項(xiàng) </p> <p> 1、**法蘭與直管段焊接時不能帶著傳感器焊接。 </p> <p> 2、安裝時應(yīng)使傳感器的流向標(biāo)志與管道內(nèi)流體流向一致。 </p> <p> 3、傳感器安裝前，法蘭凹槽內(nèi)必須放好密封圈。壓力和溫度測量點(diǎn)的位置，取壓點(diǎn)在傳感器下游3～5DN處，測溫點(diǎn)在下游5～8DN處。 </p> <p> 4、測量高溫介質(zhì)時，切勿用隔熱材料把傳感器連接桿周圍包起來。 </p> <p> 5、連接傳感器的屏蔽電纜走向，應(yīng)盡可能遠(yuǎn)離強(qiáng)電磁場的干擾場合。***不允許與高壓電纜一起敷設(shè)，屏蔽電纜要盡量縮短，并且不得盤卷，以減少分布電感，比較大長度不應(yīng)超過200米。 </p> <p> 6、安裝傳感器前，管道必須進(jìn)行清洗。沖掉管內(nèi)的雜質(zhì)，避免通流后堵塞傳感器。測量液體的管道必須充滿被測液體，防止氣泡的干擾。 </p> <p> 測量氣體的管道為防止儲積液的干擾。安裝位置如圖五所示。高溫高壓下更換探頭體時，必須安全操作，做好高溫防護(hù)。降溫降壓后在安全條件下方可更換探頭。 </p><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(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><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雅安渦街流量計(jì)價格,渦街流量計(jì)" src="http://tyunfile.71360.com/UploadFile/cdwckj/637107349081816406/9531621.jpg"></div><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，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。廣元渦街流量計(jì)供應(yīng)</p><p style="text-indent:25px">雅安渦街流量計(jì)價格</p><p> 常見故障 </p> <p> 渦街流量計(jì)常見故障：一臺DN50渦街流量計(jì)，從說明書查到，其液體用流量范圍是3-50m3/h。我們在油流標(biāo)準(zhǔn)裝置上標(biāo)定的結(jié)果是10-50 m3/h符合精度要求，但10m3/h以下精度不合格，應(yīng)如何評價此臺流量計(jì)？ </p> <p> 渦街流量汁說明書中，標(biāo)明的流量范圍是使用于特定參考介質(zhì)的流量范圍，如液體—般指常溫水。用于其他介質(zhì)時，可用流量范圍將隨介質(zhì)的粘度和密度不同而異。由于油流量標(biāo)準(zhǔn)裝置采用粘度比水大，密度比水小的柴油做標(biāo)定介質(zhì)，流量計(jì)的下限流量—般都會相應(yīng)提高，使可用流量范圍變窄。所以，渦街流量計(jì)在油流量標(biāo)定裝置上標(biāo)定出現(xiàn)小流量性能變差是正常的。由此我們不難推斷，如果用液化石油氣(這種低粘度介質(zhì))標(biāo)定渦街流量汁，將會得到比水好的相反結(jié)果。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 雅安渦街流量計(jì)價格</p><p style="text-indent:25px">成都皖川科技有限公司總部位于四川省成都市青羊區(qū)青羊萬達(dá)廣場SOHO公寓2-2-1138室，是一家研發(fā)、銷售計(jì)算機(jī)軟硬件;計(jì)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。成都皖川科技作為研發(fā)、銷售計(jì)算機(jī)軟硬件;計(jì)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。的企業(yè)之一，為客戶提供良好的耐磨熱電偶，氣體檢測儀器，便攜式氣體報警控制器，雙金屬溫度計(jì)。成都皖川科技始終以本分踏實(shí)的精神和必勝的信念，影響并帶動團(tuán)隊(duì)取得成功。成都皖川科技始終關(guān)注儀器儀表行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1415765.html</p></div></div></div></div></div><div id="mf2ulhd" class="page-right twoColRt"><div id="87rij3o" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="k7x38y8" class="recomPic likePro"><a 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