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href="http://www.cdcfah.com/cp/third-llyb_liuliangji/">流量計(jì)</a>?黑龍江衛(wèi)生型渦旋流量計(jì)哪家好信息推薦西安倫騫電器設(shè)備供應(yīng)</p><div id="xm4l3mz" class="leftbox clearfix"><h1>黑龍江衛(wèi)生型渦旋流量計(jì)哪家好信息推薦西安倫騫電器設(shè)備供應(yīng)</h1><div id="edx3acz" class="proBig"><div id="tn9bluw" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520715556641/6274057.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mg4axov" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520715556641/6274057.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="os4spwo" 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>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>黑龍江衛(wèi)生型渦旋流量計(jì)哪家好,流量計(jì)</p><p><span>***更新：</span>2020-10-12 07:05:53</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="vpjlnpb" 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(jī): </span>138-91837328</p><p><span>地址: </span>高新區(qū)發(fā)展大道25號(hào)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="eynaxz8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="cfkwy3d" class="box"><p><p> 電磁流量計(jì)簡(jiǎn)單說是由流量傳感器變送器組成的。電磁流量計(jì)的安裝要求是一定要安裝在管路的較低點(diǎn)或者管路的垂直段，但是一定是在滿管的情況下，對(duì)直管段要求是前5D后3D，這樣才能保證電磁流量計(jì)的使用和對(duì)精度的要求，黑龍江衛(wèi)生型渦旋流量計(jì)哪家好。 </p> <p> 電磁流量計(jì)的測(cè)量原理不依賴流量的特性，如果管路內(nèi)有一定的湍流與漩渦產(chǎn)生在非測(cè)量區(qū)內(nèi)（如：彎頭、切向限流或上游有半開的截止閥）則與測(cè)量無關(guān)，黑龍江衛(wèi)生型渦旋流量計(jì)哪家好。如果在測(cè)量區(qū)內(nèi)有穩(wěn)態(tài)的渦流則會(huì)影響測(cè)量的穩(wěn)定性和測(cè)量的精度，這時(shí)則應(yīng)采取一些措施以穩(wěn)定流速分布： </p> <p> 1，黑龍江衛(wèi)生型渦旋流量計(jì)哪家好. 增加前后直管段的長(zhǎng)度;2. 采用一個(gè)流量穩(wěn)定器;3. 減少測(cè)量點(diǎn)的截面。為了使電磁流量計(jì)的傳感小型化和改善信噪比，出現(xiàn)了用非均勻磁場(chǎng)和低頻勵(lì)磁方式的電磁流量計(jì)。黑龍江衛(wèi)生型渦旋流量計(jì)哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江衛(wèi)生型渦旋流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520715556641/6274057.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(duì)稱地排列。 </p> <p> 渦街流量計(jì)是根據(jù)卡門（Karman）渦街原理測(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： </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(cè)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(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。渦街流量計(jì)圖片流量測(cè)量的發(fā)展可追溯到古代的水利工程和城市供水系統(tǒng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江衛(wèi)生型渦旋流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520164541016/3121473.png"></div><p> 熱式流量計(jì)的特點(diǎn):1:無可動(dòng)部件，密封面減少，降低泄漏率，便于安裝和日常維護(hù);2:測(cè)量范圍寬，比較大測(cè)量范圍可達(dá)20:1(液體)或30:1(氣體);3:計(jì)量準(zhǔn)確、精度高，法蘭式可達(dá)(液體)或(氣體);4:靈敏度極高，能測(cè)量超小流量，其可測(cè)量低流速為，電磁流量計(jì)5:重復(fù)性好，一般為，非線性修正，濾波時(shí)間可選擇;6:壓力損失小，小口徑*為標(biāo)準(zhǔn)孔板的1/2△P左右;DN100口徑以上壓力損失開始大幅度減少;7:標(biāo)定方便，除可采用標(biāo)準(zhǔn)裝置檢定外，還可采用干式標(biāo)定方法，即采用砝碼掛重法，單鍵操作即可完成標(biāo)定;8:可根據(jù)實(shí)際需要更換阻流件而改變流量范圍，在線可拆裝插入式結(jié)構(gòu)可實(shí)現(xiàn)不停產(chǎn)，不斷流維修或更換;9:低功耗電池現(xiàn)場(chǎng)顯示，能在線直讀示值，顯示屏可同時(shí)讀取瞬時(shí)流量累積流量及百分比棒圖，并可切換顯示補(bǔ)償溫度及補(bǔ)償壓力示值;10:抗干擾、抗雜質(zhì)能力特強(qiáng)，多種輸出形式，能遠(yuǎn)傳各種參數(shù)，使用無需拌熱。11.測(cè)量氣體無需溫度壓力補(bǔ)償，可直接顯示標(biāo)況體積流量。 </p><p> 渦街流量計(jì)便是依據(jù)卡門旋渦原理進(jìn)行封閉管道流體流量測(cè)量的新型流量計(jì)。因其具有良好的介質(zhì)適應(yīng)能力，無需溫度壓力補(bǔ)償即可直接測(cè)量蒸汽、空氣、氣體、水、液體的工況體積流量，配備溫度、壓力傳感器可測(cè)量標(biāo)況體積流量和質(zhì)量流量，是節(jié)流式流量計(jì)的理想替代產(chǎn)品。為提高渦街流量計(jì)的耐高溫及抗振動(dòng)性能，我公司新近開發(fā)出了改進(jìn)型渦街流量傳感器，因其獨(dú)特的結(jié)構(gòu)和選材使該傳感器可在高溫（350℃）、強(qiáng)振動(dòng)（≤1g）的惡劣工況下使用。在實(shí)際應(yīng)用中，往往比較大流量遠(yuǎn)低于儀表的上限值，隨著負(fù)荷的變化，小流量又往往會(huì)低于儀表的下限值，儀表并非工作在它的比較好工作段，為了解決這一問題，通常采用在測(cè)量處縮徑提高測(cè)量處的流速，并選用較小口徑的儀表以利于儀表的測(cè)量，但是這種變徑方式必須在變徑管與儀表間有長(zhǎng)度為15D以上的直管段進(jìn)行整流，使加工、安裝都不方便。我公司研制的縱斷面形狀為圓弧的LGZ變徑整流器，具有整流、提高流速及改變流速分布多重作用，其結(jié)構(gòu)尺寸小，*為工藝管內(nèi)徑的1/3，與渦街流量計(jì)作成一體，不*不需要另外附加一段直管段，還可以降低對(duì)工藝管直管段的要求，安裝非常方便。流量計(jì)在國(guó)民經(jīng)濟(jì)中的地位與作用更加明顯。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江衛(wèi)生型渦旋流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332519835488281/573497.png"></div><p> 電磁流量計(jì)的結(jié)構(gòu)主要由磁路系統(tǒng)、測(cè)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(cè)量成正比的感應(yīng)電勢(shì)信號(hào)。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(shí)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(cè)量精度。 </p> <p> 外殼：應(yīng)用鐵磁材料制成，是分配制度勵(lì)磁線圈的外罩，并隔離外磁場(chǎng)的干擾。 </p> <p> 襯里：在測(cè)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(cè)液體，其作用是增加測(cè)量導(dǎo)管的耐腐蝕性，防止感應(yīng)電勢(shì)被金屬測(cè)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(dòng)產(chǎn)生的感應(yīng)電勢(shì)信號(hào)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(shì)信號(hào)放大并轉(zhuǎn)換成統(tǒng)一的標(biāo)準(zhǔn)信號(hào)并yizhi主要的干擾信號(hào)。其任務(wù)是把電極檢測(cè)到的感應(yīng)電勢(shì)信號(hào)Ex經(jīng)放大轉(zhuǎn)換成統(tǒng)一的標(biāo)準(zhǔn)直流信號(hào)。流量測(cè)量，在1738年，瑞士有名的物理學(xué)家丹尼爾·伯努利以伯努利方程為基礎(chǔ)，利用了差壓法測(cè)量了水流量。一體分體式電磁流量計(jì)介紹</p><p style="text-indent:25px">流量計(jì)量是計(jì)量科學(xué)技術(shù)的組成部分之一，它與國(guó)民經(jīng)濟(jì)、**建設(shè)、科學(xué)研究有密切的關(guān)系。黑龍江衛(wèi)生型渦旋流量計(jì)哪家好</p><p> 當(dāng)超聲波在不均勻流體中傳送時(shí)，聲波會(huì)產(chǎn)生散射。流超聲流量計(jì)體與發(fā)送器間有相對(duì)運(yùn)動(dòng)時(shí)，發(fā)送的聲波信號(hào)和被流體散射后接收到的信號(hào)之間會(huì)產(chǎn)生多普勒頻移。多普勒頻移與流體流速成正比。被測(cè)流體的區(qū)域位于發(fā)射波束與接收到的散射波束的交叉之處。要求波束很窄，使兩波束的夾角θ不致受到波束寬度影響。也可只采用一個(gè)變換器既作為發(fā)送器又作為jieshouqi，這種方式稱為單通道式。在單通道多普勒血液流量計(jì)中，發(fā)送器間隔地發(fā)送聲脈沖信號(hào)，在兩個(gè)聲脈沖間隔的時(shí)間中，接收從血管壁和血管內(nèi)紅血球反射回來的聲脈沖信號(hào)。采用控制線路選擇給定距離處的紅血球反射信號(hào),通過比較后得到多普勒頻移,它與血液流速成正比。在已知血管橫截面時(shí)可得到血液流量。黑龍江衛(wèi)生型渦旋流量計(jì)哪家好</p><p style="text-indent:25px">西安倫騫電器設(shè)備有限責(zé)任公司是一家智能儀器儀表銷售：網(wǎng)絡(luò)設(shè)備銷售；安防設(shè)備銷售；閥門和旋塞銷售；計(jì)算機(jī)軟及軸助設(shè)備零售；環(huán)境監(jiān)測(cè)**儀器銷售；電氣設(shè)備銷售；機(jī)械設(shè)備銷售；電子元器件與機(jī)電組件設(shè)備銷售；電子產(chǎn)品銷售；終端計(jì)量設(shè)備銷售；終端測(cè)試設(shè)備銷售；供應(yīng)用儀器儀表銷售；電子**設(shè)備銷售；技術(shù)開發(fā)；普通機(jī)械設(shè)備安裝服務(wù)；智能儀器儀表制造：儀器儀表修理；儀器儀表制造；環(huán)境監(jiān)測(cè)**儀器儀表制造；其他通用儀器制造；電子測(cè)量?jī)x器化工。的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。西安倫騫電器作為智能儀器儀表銷售：網(wǎng)絡(luò)設(shè)備銷售；安防設(shè)備銷售；閥門和旋塞銷售；計(jì)算機(jī)軟及軸助設(shè)備零售；環(huán)境監(jiān)測(cè)**儀器銷售；電氣設(shè)備銷售；機(jī)械設(shè)備銷售；電子元器件與機(jī)電組件設(shè)備銷售；電子產(chǎn)品銷售；終端計(jì)量設(shè)備銷售；終端測(cè)試設(shè)備銷售；供應(yīng)用儀器儀表銷售；電子**設(shè)備銷售；技術(shù)開發(fā)；普通機(jī)械設(shè)備安裝服務(wù)；智能儀器儀表制造：儀器儀表修理；儀器儀表制造；環(huán)境監(jiān)測(cè)**儀器儀表制造；其他通用儀器制造；電子測(cè)量?jī)x器化工。的企業(yè)之一，為客戶提供良好的雷達(dá)料位計(jì)，雷達(dá)物位計(jì)，壓力變送器，溫度變送器。西安倫騫電器致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對(duì)用戶產(chǎn)品上的貼心，為用戶帶來良好體驗(yàn)。西安倫騫電器創(chuàng)始人付海飛，始終關(guān)注客戶，創(chuàng)新科技，竭誠(chéng)為客戶提供良好的服務(wù)。</p></p><br 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