山西金屬轉(zhuǎn)子流量計(jì)哪家好江蘇中徽測控儀表供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="差壓式流量計(jì)的組成差壓式(也稱節(jié)流式)流量計(jì)是基于流體流動(dòng)的節(jié)流原理，利用流體經(jīng)節(jié)流裝置時(shí)產(chǎn)生的壓力差而實(shí)現(xiàn)流量測量的。差壓式流量計(jì)一般是由能將流體的流量變換成差壓信號(hào)的節(jié)流量(孔扳、噴嘴)和用來測量壓差值的差壓計(jì)或差壓變送器及顯示儀表組成"><meta name="keywords" content="山西金屬轉(zhuǎn)子流量計(jì)哪家好,流量計(jì)"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" 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clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="13wd33q" class="twoCol"><div id="c7r2rlc" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://www.cdcfah.com/cp/second-yiqiyibiao_wybez/">物位儀表</a>?<a href="http://www.cdcfah.com/cp/third-wybez_yyb/">液位儀表</a>?山西金屬轉(zhuǎn)子流量計(jì)哪家好江蘇中徽測控儀表供應(yīng)</p><div id="8hdvuli" class="leftbox clearfix"><h1>山西金屬轉(zhuǎn)子流量計(jì)哪家好江蘇中徽測控儀表供應(yīng)</h1><div id="d3y2uri" class="proBig"><div id="nm79ahy" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436288983535731/8125157.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ae3ie3v" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436288983535731/8125157.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="yhug2yp" 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>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>山西金屬轉(zhuǎn)子流量計(jì)哪家好,流量計(jì)</p><p><span>***更新：</span>2021-01-28 11:11:52</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="i7hbujk" 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(hào)</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="auryvhj" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="shegnuw" class="box"><p><p style="text-indent:25px">差壓式流量計(jì)的組成差壓式(也稱節(jié)流式)流量計(jì)是基于流體流動(dòng)的節(jié)流原理，利用流體經(jīng)節(jié)流裝置時(shí)產(chǎn)生的壓力差而實(shí)現(xiàn)流量測量的。差壓式流量計(jì)一般是由能將流體的流量變換成差壓信號(hào)的節(jié)流量(孔扳、噴嘴)和用來測量壓差值的差壓計(jì)或差壓變送器及顯示儀表組成。這種流量計(jì)，目前在化工、煉油及其它工業(yè)中應(yīng)用很廣，應(yīng)用的歷史也較長久，因此已經(jīng)積累了豐富的實(shí)踐經(jīng)驗(yàn)和完整的實(shí)驗(yàn)資料。對于常用的孔板、噴嘴等節(jié)流裝置，國內(nèi)外已把它們標(biāo)準(zhǔn)化了，并稱為“標(biāo)準(zhǔn)節(jié)流裝置”，山西金屬轉(zhuǎn)子流量計(jì)哪家好。因此,這種流量計(jì)所用的標(biāo)準(zhǔn)節(jié)流裝置可以根據(jù)計(jì)算結(jié)果直接投入制造和使用，不必用實(shí)驗(yàn)方法進(jìn)行單獨(dú)標(biāo)定。但對于非標(biāo)準(zhǔn)化的特殊節(jié)流裝置,在使用時(shí)，山西金屬轉(zhuǎn)子流量計(jì)哪家好，均應(yīng)進(jìn)行個(gè)別標(biāo)定，山西金屬轉(zhuǎn)子流量計(jì)哪家好。質(zhì)量流量計(jì)的測量管無論是向上還是向下安裝，都要盡量使測量管與地平面保持垂直或水平。山西金屬轉(zhuǎn)子流量計(jì)哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西金屬轉(zhuǎn)子流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436288983535731/8125157.png"></div><p> <p> 為了智能電磁流量計(jì)能夠很好地正常使用，智能電磁流量計(jì)傳感器接地一定要安裝好。智能電磁流量計(jì)傳感器接地時(shí)，應(yīng)注意以下幾點(diǎn)： </p> <p> 1、傳感器、轉(zhuǎn)換器的接地在現(xiàn)場，去二次儀表的屏蔽層在控制室一側(cè)接地，切勿多端接地，以免因電位不同而引入干擾。 </p> <p> 2、傳感器安裝在金屬管道上，可將傳感器的接地導(dǎo)線按制造廠的要求連接在管道法蘭上，形成可靠的接地回路儀表的接地點(diǎn)應(yīng)是一個(gè)單獨(dú)的接地點(diǎn)，不可以共用其他電氣設(shè)備的接地。 </p> <p> 3、傳感器的測量管、外殼、屏蔽線、轉(zhuǎn)換器及二次儀表都要接地。 </p> <p> 4、傳感器、轉(zhuǎn)換器應(yīng)單獨(dú)接地，不要連在電動(dòng)機(jī)、工藝管道上，接地電阻應(yīng)小于10歐姆。 </p> </p> <p> <br /> 山西金屬轉(zhuǎn)子流量計(jì)哪家好孔板流量計(jì)使流速增加，靜壓力低，于是在節(jié)流件前后便產(chǎn)生了壓力降，即壓差；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西金屬轉(zhuǎn)子流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289114609938/9762879.png"></div><p style="text-indent:25px">孔板流量計(jì)的常見問題主要有以下幾類：被測流體特性的影響比方在用孔板流量計(jì)丈量自然氣流量的時(shí)分，思索到自然氣自身的性質(zhì)，會(huì)隨著外界環(huán)境溫度的變化而發(fā)作復(fù)雜的改動(dòng)，從而會(huì)影響到流量計(jì)的丈量精度。關(guān)于自然氣等密度會(huì)發(fā)作改動(dòng)的介質(zhì)的丈量，必需首先肯定一個(gè)穩(wěn)定的工作溫度和正常的壓力。盡量減小外界溫度變化所帶來的壓力和溫度隨之發(fā)作的變化，大水平減小密度變化和緊縮系數(shù)變化，從而保證丈量的精確度。低密度氣體對某些丈量辦法的呈現(xiàn)艱難，此時(shí)就要改動(dòng)已選定的丈量辦法，或者作溫度，并及時(shí)停止壓力修正，以保證丈量精確精確度。儀表性能的影響孔板流量計(jì)自身可能惹起誤差的緣由主要有：孔板入口直角銳利度；管徑尺寸與原方案不符；孔板厚度存在誤差；節(jié)流件附件產(chǎn)生臺(tái)階、偏心率；孔板上游端面的平度；環(huán)室尺寸產(chǎn)生臺(tái)階、偏心率；取壓的位置；焊接、焊縫能否突出；取壓孔加工不標(biāo)準(zhǔn)或呈現(xiàn)梗塞；節(jié)流件的不同軸度等等。這些要素都有可能影響孔板的反復(fù)性，反復(fù)性是由儀器自身的結(jié)構(gòu)原理與制造質(zhì)量所決議的，它的過程控制在實(shí)踐應(yīng)用中是很重要的指標(biāo)。而準(zhǔn)確度除了取決于反復(fù)性之外，還與量值標(biāo)定系統(tǒng)有關(guān)系。在實(shí)踐應(yīng)用中，儀表性能的反復(fù)性被許多要素干擾。</p><p> V錐流量計(jì)特點(diǎn)V錐流量計(jì)是從2000年左右才在中國國內(nèi)出現(xiàn)的流量計(jì)。其工作原理和孔板流量計(jì)相同。介質(zhì)通過V錐時(shí),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(hào)噪聲比較大,從而限制了它的測量范圍。而V錐流量計(jì)克服了以上缺點(diǎn)。 </p> <p> <br /> </p> <p> <br /> 智能電磁流量計(jì)是一種流量儀表，因?yàn)樗歉鶕?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)；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西金屬轉(zhuǎn)子流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289174834595/5651638.png"></div><p> 環(huán)形孔板適用于各種流體（氣體、蒸汽、液體）介質(zhì)，它除了具有標(biāo)準(zhǔn)孔板的結(jié)構(gòu)簡單、牢固、安裝使用方便等特點(diǎn)以外，還具有以下優(yōu)點(diǎn)： </p> <p> 1、更適合測量飽和蒸汽、過熱蒸汽以及煤氣、冷卻水等臟污流體。 </p> <p> 2、更容易適應(yīng)高溫、高壓流體的流量測量。 </p> <p> 3、比圓缺孔板、偏心孔板工作更可靠，測量更精確。 </p> <p> 4、以較低的成本制成耐腐蝕型，測量腐蝕性流體的流量。 </p> <p> 5、由于本產(chǎn)品外部形狀簡單，容易制成夾套保濕型在夾套內(nèi)通蒸汽，可以防止被測流體在測量管段內(nèi)凝結(jié)或粘附；通以冷卻液，可防止易汽化的液體在流經(jīng)測流板時(shí)形成汽液兩相流。 </p> <p> 6、采用均壓環(huán)結(jié)構(gòu)，減少了測量誤差來源引至差壓變送器的是在測流板上、下游處取壓管橫截面的靜壓平均值，減弱了上游局部阻力形成的速度分布畸變對精度的影響，實(shí)際精度更接近基本精度。 </p> <p> 7、要求較低的前后直管段 </p> <p> 8、采用一體型結(jié)構(gòu)形式，減少管線敷設(shè)。 </p> <p> 9、采用帶遠(yuǎn)傳膜盒的差壓變送器，可以測量諸如煤粉、渣油等臟污液體的流量。 </p> <p> 工作原理：環(huán)形孔板節(jié)流裝置和普通的標(biāo)準(zhǔn)孔板一樣，依據(jù)的基本原理是流體連續(xù)性方程和伯努利方程。把環(huán)形孔板安裝在圓管中，當(dāng)液體流經(jīng)節(jié)流裝置時(shí)，其上、下游側(cè)之間就會(huì)產(chǎn)生壓力差。 </p> <p> 連接方式：法蘭連接和焊接連接。超聲波流量計(jì)是一種非接觸式測量儀表，可用來測量不易接觸、不易觀察的流體流量和大管徑流量。揚(yáng)州長頸噴嘴流量計(jì)源頭直供廠家</p><p style="text-indent:25px">被測流體是液體時(shí)，引壓管路內(nèi)全部是液相，不能有氣泡。山西金屬轉(zhuǎn)子流量計(jì)哪家好</p><p> 孔板流量計(jì)管道安裝條件如下：（1）節(jié)流件前后的直管段必須是直的，不得有肉眼可見的彎曲。(2)用于安裝節(jié)流孔的直段必須平滑，如果不平滑，必須對流量系數(shù)應(yīng)用粗糙度來修正稀疏。(3)流體的流動(dòng)是為了在節(jié)流孔的前1d形成充分發(fā)達(dá)的紊流速度分布，使該分布成為均勻的軸對稱形1）直管段必須是圓的，而且對節(jié)流件前2D范圍，其圓度要求其甚為嚴(yán)格，并且有一定的圓度指標(biāo)。具體衡量方法：(a)在節(jié)流孔前od、d/2、d、2d四個(gè)垂直管截面上，以較大的角度距離測定至少四個(gè)管內(nèi)徑的測定值，取平均值d。任意內(nèi)徑單測量值與平均值之差不得超過±（B）在節(jié)流件后，在OD和2D位置用上述方法測得8個(gè)內(nèi)徑單測值，任意單測值與D比較，其*大偏差不得超過±2%2）節(jié)流件前后要求一段足夠長的直管段，這段足夠長的直管段和節(jié)流件前的局部阻力件形式有關(guān)和直徑比β有關(guān)。(4)節(jié)流孔上游側(cè)的第1電阻體和第2電阻體間的直管段的長度可以取第2電阻體的形狀和β=。山西金屬轉(zhuǎn)子流量計(jì)哪家好</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3050632.html</p></div></div></div></div></div><div id="kjlnubn" class="page-right twoColRt"><div id="8tvszln" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="e3jvsug" 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" 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