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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>天津液體渦輪流量計找哪家,流量計</p><p><span>***更新：</span>2021-01-24 10:10:48</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="h75bptr" 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="th7zndj" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hfltjft" class="box"><p><p style="text-indent:25px">信號傳輸電纜長度的題目傳感器(即電極)與轉(zhuǎn)換器之間的連接電纜愈短愈好。但有些現(xiàn)場受安裝環(huán)境位置的限制，轉(zhuǎn)換器與傳感器的間隔較遠(yuǎn)，天津液體渦輪流量計找哪家，天津液體渦輪流量計找哪家，這時要考慮連接電纜的最大長度題目。傳感器與轉(zhuǎn)換器之間的連接電纜的最大長度又由電纜的分布電容和被測流體的電導(dǎo)率決定，天津液體渦輪流量計找哪家。實際使用中，當(dāng)被測流體的電導(dǎo)率是在一定的范圍之間，因此就決定了電極與轉(zhuǎn)換器之間電纜的最大長度。當(dāng)電纜長度超過最大長度時，由電纜分布電容引起的負(fù)載效應(yīng)就成了題目。為防止這種情況發(fā)生，使用雙芯兩層屏蔽電纜，由轉(zhuǎn)換器提供低阻抗電壓源使內(nèi)側(cè)屏蔽與芯線得到相同的電壓，以形成屏蔽，即使芯線與屏蔽之間有分布電容存在，但芯線與屏蔽是同電位，則兩者之間就無電暢通流暢過，也無電纜的負(fù)載效應(yīng)存在，因此可延長信號電纜最大長度。另外，還可用特殊信號傳輸電纜延長轉(zhuǎn)換器與傳感器之間的最大長度。容積式流量計與差壓式流量計、浮子流量計并列為三類使用量比較大的流量計；天津液體渦輪流量計找哪家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津液體渦輪流量計找哪家,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289204346373/8482943.png"></div><p> 流體流經(jīng)管道內(nèi)的節(jié)流裝置，在節(jié)流件附近造成局部收縮，流速增加，在其上、下游兩側(cè)產(chǎn)生靜壓力差。在已知有關(guān)參數(shù)的條件下，根據(jù)流動連續(xù)性原理和伯努利方程可以推導(dǎo)出差壓與流量之間的關(guān)系而求得流量?？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，價格較低，是工業(yè)中常用到的流量測量儀表，整個加工過程采用國際標(biāo)準(zhǔn)，并經(jīng)過嚴(yán)格的校驗檢測，用戶在購買后可放心使用。該流量計應(yīng)用領(lǐng)域比較，所有的單相流速都可以測量，一部分混相流也可以使用該產(chǎn)品孔板流量計可測量管道中各種流體的流量，可測量的介質(zhì)有液體、氣體、蒸汽，被應(yīng)用于石油、化工、冶金、輕工、煤礦等工業(yè)部門。測量原理：充滿管道的流體，當(dāng)它們流經(jīng)管道內(nèi)的節(jié)流裝置時，流束將在節(jié)流裝置的節(jié)流件處形成局部收縮孔板流量計前后產(chǎn)生一個靜壓力差,該壓力差與流量存在著一定的函數(shù)關(guān)系,流量越大,壓力差就越大.差壓信號傳送給差壓變送器。湖北孔板流量計廠家批發(fā)渦輪流量計特點：抗雜質(zhì)能力強(qiáng)、抗電磁干擾和抗振能力強(qiáng);</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津液體渦輪流量計找哪家,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436288996836659/3226440.png"></div><p style="text-indent:25px">保證孔板流量計測量精度：1、對孔板流量計的溫度影響及其修正，流體的溫度變化引起密度變化，壓差與流量的關(guān)系發(fā)生變化，其次，溫度變化引起配管內(nèi)徑、孔板的變化，溫度變化的修正，用溫度計測量現(xiàn)場溫度，輸入二次計，計算溫度變化引起的誤差；2，蒸汽質(zhì)量流量的計算，孔板流量計測量蒸汽時，先由差壓信號求得流量值，再由蒸汽溫度，壓力值查表得出密度，來計算蒸汽流量質(zhì)量。3，孔板流量計進(jìn)行逐臺標(biāo)定。大家都知道，標(biāo)準(zhǔn)孔板只要設(shè)計制造參照相關(guān)標(biāo)準(zhǔn)，不需要實流標(biāo)定就可以直接使用。流出系數(shù)可以用軟件直接算出，但計算機(jī)的計算還是理想的，與現(xiàn)場環(huán)境有一定程度的差異，為了保證測量精度，建議對每個流量計進(jìn)行實際流標(biāo)定，將標(biāo)定的流出系數(shù)與計算結(jié)果進(jìn)行比較，算出出差值，進(jìn)行修正。4，可膨脹性校正。用孔板流量計測量蒸汽、氣體流量時，流體的膨脹性需要補(bǔ)正。具體的補(bǔ)正系數(shù)請參照光圈裝置設(shè)計手冊。5、雷諾數(shù)的修正，孔板流量計的流量系數(shù)與雷諾數(shù)之間有確定的關(guān)系，質(zhì)量流量變化時雷諾數(shù)成比例變化，引起流量系數(shù)變化。</p><p style="text-indent:25px">電磁流量計應(yīng)用一直都非常，由于是為供水企業(yè)水計量商業(yè)專門設(shè)計的，具有防水、防腐、防干擾、防雷擊的能力。那么在電磁流量計使用中也肯定有一些題目，我們就收集來分析一下。一、傳感器接地的題目電磁流量計傳感器電極檢測的流量信號是毫伏級，且以傳感器內(nèi)流體的電位為基準(zhǔn)的，所以外來干擾對它的影響很大，因而，良好的接地很大程度上決定著流量計的丈量正確度。被測的流體本身作為電導(dǎo)體，必需排除其他不相關(guān)的電磁干擾。電極檢測出的電勢信號，不受外界寄生電勢的干擾。對傳感器應(yīng)有良好的單獨接地線，接地電阻小于10Ω。在連接傳感器的管道內(nèi)若涂有絕緣層或長短金屬管道時，傳感器兩側(cè)應(yīng)裝有接地環(huán)。流量計有節(jié)流式流量計、畢托管流量計、均速管流量計、轉(zhuǎn)子流量計、靶式流量計；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津液體渦輪流量計找哪家,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289098819741/4521959.png"></div><p style="text-indent:25px">孔板、楔形流量計一樣的原理孔板流量計、楔形流量計，屬于恒截面，變壓差型流量計。也就是說它們的概念相同孔板流量計，就是在管道內(nèi)部加裝一個中間開孔的圓板，然后測量蒸汽在孔板前后的壓力差，經(jīng)過計算換算出蒸汽的流量。因為蒸汽的流速在節(jié)流件處（孔板）形成局部收縮，靜壓力降低，流速增加，于是在節(jié)流件前后便產(chǎn)生了壓差。根據(jù)流動連續(xù)性方程（質(zhì)量守恒定律）和伯努利方程（能量守恒定律），流量的大小與差壓的大小存在一定的比例關(guān)系：M2∝ΔP。式中，M為流量；ΔP為差壓。通過引壓管將差壓信號引入差壓變送器，差壓變送器將差壓信號送入流量積算儀，積算儀將差壓信號換算成流量信號。同時通過溫度和壓力傳感器測出蒸汽的溫度和壓力，積算儀根據(jù)當(dāng)時的溫度和壓力計算出補(bǔ)償后的流量。智能電磁流量計因為結(jié)構(gòu)簡單，流量計外殼、被測流體和管道連接法蘭三者之間應(yīng)做等電位連接，并應(yīng)接地；天津液體渦輪流量計找哪家</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，擁有著非常獨特的特點；天津液體渦輪流量計找哪家</p><p> V錐流量計特點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。 </p> <p> <br /> </p> <p> <br /> 天津液體渦輪流量計找哪家</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2989681.html</p></div></div></div></div></div><div id="nz77d9h" class="page-right twoColRt"><div id="nr7tbrf" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="rfv7nlh" 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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