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src="https://tyunfile.71360.com/UploadFile/jszhck/637436289195098254/5407997.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="hlbh5hn" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436289195098254/5407997.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="h3ft5tp" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>湖北金屬轉(zhuǎn)子流量計供貨廠,流量計</p><p><span>***更新：</span>2021-01-25 05:09:25</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="znlhnjt" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇中徽測控儀表有限公司</a></p><p><span>聯(lián)系人：</span>姜經(jīng)理</p><p><span>郵箱: </span>jszhck@163.com</p><p><span>電話: </span>13770424300</p><p><span>傳真: </span>0517_86903470</p><p><span>網(wǎng)址: </span>http://www.jszhckyb.com</p><p><span>手機(jī): </span>0517-86900078</p><p><span>地址: </span>江蘇省淮安市金湖縣工業(yè)集中區(qū)A區(qū)3號</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="n5jxbhf" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="t57z3jz" class="box"><p><p style="text-indent:25px">一體式孔板流量計是現(xiàn)階段在原油、化工廠、冶金工業(yè)，湖北金屬轉(zhuǎn)子流量計供貨廠、電力工程、供暖、供電等行業(yè)用以準(zhǔn)確測量汽體、蒸氣、液體及引的總流量的關(guān)鍵方法，流通截面的轉(zhuǎn)變在現(xiàn)場應(yīng)用中，填料表層很有或許會粘合上一層污漬或殘渣，湖北金屬轉(zhuǎn)子流量計供貨廠，形成商品流通截面縮小，準(zhǔn)確測量氣體壓力便會擴(kuò)展，進(jìn)而準(zhǔn)確測量總流量擴(kuò)展。處理方法:查驗填料周邊是不是整潔，對其展開清理，智能變送器零點(diǎn)漂移假設(shè)使用時間較長，智能變送器的零點(diǎn)很有或許會產(chǎn)生飄移，如果是正飄移，顯現(xiàn)信息的氣體壓力或許擴(kuò)展，顯現(xiàn)信息的總流量便會擴(kuò)展。處理方法:對智能變送器的零點(diǎn)展開校準(zhǔn)，一體式孔板流量計上中下游接管段間隔不足上中下游接管段間隔假設(shè)不足，汽體將無法得到充足發(fā)展趨勢，會使計量檢定結(jié)果導(dǎo)致很大誤差，假設(shè)上下游在要求接管段內(nèi)存有獨(dú)自彎管或平面圖雙彎管，將使計量檢定結(jié)果較高。處理方法:更新改造壓縮空氣管道，使上中下游接管段間隔做到要求規(guī)定。在節(jié)省裝置以前改裝鎮(zhèn)流器，孔板厚度不符合要求標(biāo)準(zhǔn)中要求填料薄厚應(yīng)挨近填料打孔薄厚e與0.05D中間，湖北金屬轉(zhuǎn)子流量計供貨廠。假設(shè)超越這一領(lǐng)域，將使汽體穿過填料的摩擦阻力損害擴(kuò)展，使計量檢定值比詳細(xì)值較高。1、標(biāo)準(zhǔn)孔板標(biāo)準(zhǔn)孔板是一類規(guī)格多的標(biāo)準(zhǔn)節(jié)流裝置，孔板的結(jié)構(gòu)因壓力、通徑、取壓方式的不同而不同。湖北金屬轉(zhuǎn)子流量計供貨廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖北金屬轉(zhuǎn)子流量計供貨廠,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289195098254/5407997.png"></div><p> 電極襯里附著物的影響在丈量有附著沉淀物的流體時，電極表面將受污染，經(jīng)常引起零點(diǎn)變動，故必需留意。零點(diǎn)變化和電極污染程度兩者的關(guān)系，要進(jìn)行定量分析比較難題，但可以說，電極直徑越小，所受的影響越少，在使用中，應(yīng)留意電極的清污，以防止附著。在襯里上附著沉淀物時產(chǎn)生的誤差Δε，假如附著的厚度是一樣，則可由式：Δε=1-2/[1+(Kω/Kf)+(1-Kω/Kf)×(1-2t/D)2]計算，式中Kω、Kf分別為附著物和丈量流體的電導(dǎo)率，附著物厚度為t，直徑為D。若式中，Kω和Kf相等，則無誤差，附著物的電導(dǎo)率較低時，上式也成立，但由于會增加電極的輸出阻抗，因此受到限制，如絕緣性沉淀物浸在流體中就是這種情況。相反，如附著金屬粉末等，因高電導(dǎo)率的附著層，使感應(yīng)電勢短路，使電極輸出偏低，造成負(fù)偏差。在丈量具有沉淀附著物的流體時，除了選擇如玻璃或聚四氯乙烯等難以附著沉淀的襯里外，還應(yīng)增其流速。假如在流體中平均地含有氣泡，則丈量的是包括氣泡的體積流量，并且使所測流量值不不亂，而引入誤差。綜上所述，在選用流量計特別是大口徑電磁流量計時，應(yīng)考慮今后對傳感器的電極及襯里的維護(hù)題目。如選用上海光華·愛而美特儀器有限公司的刮刀電極或可更換式電極. </p> <p> <br /> </p> <p> <br /> 河北電磁流量計生產(chǎn)廠家浮子流量計是*次于差壓式流量計應(yīng)用范圍寬廣的一類流量計,特別在小、微流量方面有舉足輕重的作用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖北金屬轉(zhuǎn)子流量計供貨廠,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289003828671/3963991.png"></div><p style="text-indent:25px">長期以來,孔板流量計由于其技術(shù)成熟、標(biāo)準(zhǔn)化程度高、結(jié)構(gòu)簡單、維護(hù)方便等特點(diǎn)而被地應(yīng)用。在海洋石油工程中也常常會用到孔板流量計。以采油平臺的測試分離器氣體出口測量為例,由于該介質(zhì)為氣體,一般壓力較高,介質(zhì)成分較復(fù)雜,流量范圍隨著年份變化較大等特點(diǎn),決定了該場合應(yīng)用孔板流量計為合適。尤其近年出現(xiàn)的可更換孔板更是解決了原有孔板流量計的低量程比的缺點(diǎn)而被地應(yīng)用。但是可更換的孔板價格昂貴,一般至少為同管徑孔板流量計價格的5倍以上。那么有沒有更好的產(chǎn)品來代替它,我們認(rèn)為V錐流量計就是代替它的優(yōu)先產(chǎn)品。</p><p style="text-indent:25px"> 智能電磁流量計傳感器接地很重要，尤其在管道存在雜散電流干擾時，只有良好的接地保護(hù)，才能使智能電磁流量計準(zhǔn)確地測量。也許在沒有這種干擾的環(huán)境里，不接地并不影響流量計準(zhǔn)確測量，但是一旦環(huán)境改變，即造成流量計不能準(zhǔn)確穩(wěn)定地工作，所以我們在安裝時比較好做好傳感器接地保護(hù)，給智能電磁流量計創(chuàng)造一個良好的工作環(huán)境。接地環(huán)分為普通型和保護(hù)型，一般是使用普通型，若被測介質(zhì)是磨損性的，宜使用帶頸的保護(hù)接地環(huán)。以保護(hù)進(jìn)口端的襯里，延長使用壽命。若口徑在200mm以下的智能電磁流量計，選用聚四氟乙烯襯里時，應(yīng)選用接地環(huán)，以保證在管道連接安裝時保護(hù)襯里不受損壞，接地環(huán)通常是不銹鋼或Hc合金的。流量計是利用伯努利方程原理，通過測量流體差壓信號反映流量;</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖北金屬轉(zhuǎn)子流量計供貨廠,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289134746609/1367639.png"></div><p style="text-indent:25px">渦街流量計的優(yōu)點(diǎn)：（1）構(gòu)造簡略、結(jié)實、裝置保護(hù)便利。無需導(dǎo)壓管和三閥組等，削減走漏、阻塞和凍住等。（2）測量規(guī)模寬，合理斷定口徑，規(guī)模度可達(dá)20:1。（3）精度較高，通常為±（1～1.5）％R。（4）輸出與流量成正比的脈沖信號，無零點(diǎn)漂移。（5）壓損小，約為節(jié)流式差壓流量計的1/4～1/2。（6）在必定雷諾數(shù)規(guī)模內(nèi)，輸出頻率不受流體物性（密度、粘度）和組成的影響，即外表系數(shù)*與旋渦發(fā)作體及管道的形狀、尺度有關(guān)?？装辶髁坑嫷膬?yōu)點(diǎn)：（1）適用規(guī)模。既適用于全部單相流體，也可測量有些混相流，如氣固、汽液、固液等。（2）節(jié)流式差壓流量計中的標(biāo)準(zhǔn)孔板構(gòu)造易于復(fù)制，簡略結(jié)實，性能安穩(wěn)可靠，價格低廉。無需實流校準(zhǔn)就可使用，這在流量計中是罕見的。（3）對振蕩不活絡(luò)，抗干擾才能格外優(yōu)勝。（4）高溫高壓大口徑和小流量均適用?？装辶髁坑嫷墓?jié)流裝置結(jié)構(gòu)簡單，且牢固、性能穩(wěn)定可靠，使用期限長；重慶插入式巴類流量計批發(fā)價格</p><p style="text-indent:25px">智能電磁流量計是一種流量儀表，因為它是根據(jù)傳統(tǒng)的物理電磁感應(yīng)原理制成的，擁有著非常獨(dú)特的特點(diǎn)；湖北金屬轉(zhuǎn)子流量計供貨廠</p><p> V錐流量計特點(diǎn)V錐流量計是從2000年左右才在中國國內(nèi)出現(xiàn)的流量計。其工作原理和孔板流量計相同。介質(zhì)通過V錐時,由于阻流件V錐的存在,使得流體的流過面積發(fā)生變化,流速發(fā)生變化,根據(jù)伯努利方程,流速變化引起了壓力的變化,該壓力的變化與流速之間有一定的關(guān)系。通過測量該壓力差達(dá)到測量流量的目的。雖然與孔板原理一樣,但是本質(zhì)的區(qū)別在于孔板為中心收縮型節(jié)流裝置,而V錐為邊壁收縮型節(jié)流裝置。眾所周知,測量范圍窄是制約孔板使用的主要原因。測量范圍窄的主要原因是:孔板的流量系數(shù)隨雷諾數(shù)的變化而變化較大,孔板的突然節(jié)流導(dǎo)致孔板后發(fā)生比較大的漩渦,該漩渦的存在直接導(dǎo)致信號噪聲比較大,從而限制了它的測量范圍。而V錐流量計克服了以上缺點(diǎn)。 </p> <p> <br /> </p> <p> <br /> 湖北金屬轉(zhuǎn)子流量計供貨廠</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2999282.html</p></div></div></div></div></div><div id="vtpfj55" class="page-right twoColRt"><div id="jfnl5lb" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="vtjxdhv" 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) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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