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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_llyb/">流量儀表</a>?<a href="http://www.cdcfah.com/cp/third-llyb_liuliangji/">流量計(jì)</a>?孔板流量計(jì)價(jià)格誠信互利上海翼爾電子科技供應(yīng)</p><div id="bfp2zoe" class="leftbox clearfix"><h1>孔板流量計(jì)價(jià)格誠信互利上海翼爾電子科技供應(yīng)</h1><div id="fublht3" class="proBig"><div id="xmyasuo" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039091991792/5193322.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7zr7der" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039091991792/5193322.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ispm8bd" 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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>孔板流量計(jì)價(jià)格,流量計(jì)</p><p><span>***更新：</span>2020-11-26 04:20:24</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="yxe323j" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海翼爾電子科技有限公司</a></p><p><span>聯(lián)系人：</span>趙“S</p><p><span>郵箱: </span>yeertec@163.com</p><p><span>電話: </span>13361991561</p><p><span>傳真: </span>021_57155131</p><p><span>網(wǎng)址: </span>http://www.yeer-tec.com</p><p><span>手機(jī): </span>021-57488360</p><p><span>地址: </span>海灣旅游區(qū)莘奉公路4960號(hào)110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="jyvszgn" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3v3gnzv" class="box"><p><p style="text-indent:25px">流量計(jì)的外表保溫維護(hù)箱辦法：a、電熱管伴熱保溫箱，由箱體、加熱器、外表托架等三大部分構(gòu)成，其構(gòu)造方式與維護(hù)箱一樣，所不一樣的是箱內(nèi)裝有電器加熱設(shè)備，電熱設(shè)備是由電熱管，溫度操控器構(gòu)成，孔板流量計(jì)價(jià)格，箱體旁邊面裝有插座，當(dāng)接通電源后，箱內(nèi)加熱到所需溫度時(shí)，再由溫度操控器接通電源持續(xù)升溫。經(jīng)過重復(fù)作業(yè)使箱內(nèi)溫度能保持在必定范圍內(nèi)。b、蒸氣管伴熱保溫箱，伴熱管是用金屬管制成S型構(gòu)造.箱體上下選用焊接式穿板接頭與伴熱管焊接而成，伴熱管設(shè)備在箱內(nèi)為進(jìn)步下出，經(jīng)過蒸氣在管腔內(nèi)的循環(huán)而到達(dá)加熱意圖。伴熱管資料通常分為兩種，孔板流量計(jì)價(jià)格，即紫銅管，無縫鋼管（碳鋼）。c、為要害外表箱再加一層保溫棉，在保溫箱門口和進(jìn)出管線口加膠密封，孔板流量計(jì)價(jià)格，可到達(dá)外表體系更佳保溫防凍作用。渦輪流量計(jì)是能夠節(jié)省動(dòng)力消耗的?？装辶髁坑?jì)價(jià)格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="孔板流量計(jì)價(jià)格,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039091991792/5193322.png"></div><p style="text-indent:25px">熱式質(zhì)量流量計(jì)的優(yōu)點(diǎn)：1. 球閥安裝，安裝拆卸方便。并可以帶壓安裝。2. 基于金氏定律，直接測量質(zhì)量流量。測量值不受壓力和溫度影響。3. 響應(yīng)迅速。4.量程范圍大，管道式安裝小的可以測量8.8mm管道的流量，大的可以測到30。5. 插入式類型的流量計(jì)，一支流量計(jì)可以用于測量多種管徑。超聲波流量計(jì)是通過檢測流體流動(dòng)對超聲束（或超聲脈沖）的作用以測量流量的儀表。超聲流量計(jì)和電磁流量計(jì)一樣，因儀表流通通道未設(shè)置任何阻礙件，均屬無阻礙流量計(jì)，是適于解決流量測量困難問題的一類流量計(jì)，特別在大口徑流量測量方面有較突出的優(yōu)點(diǎn)，它是發(fā)展迅速的一類流量計(jì)之一?？装辶髁坑?jì)價(jià)格超聲波流量計(jì)的測量范圍大，管徑范圍從20mm～5m。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="孔板流量計(jì)價(jià)格,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039044648371/6738453.png"></div><p style="text-indent:25px">渦街流量計(jì)工作狀態(tài)下的體積流量不受被測流體溫度、壓力、密度等熱工參數(shù)的影響，但液體或蒸汽的然后測量結(jié)果應(yīng)是質(zhì)量流量，對于氣體，然后測量結(jié)果應(yīng)是標(biāo)準(zhǔn)體積流量。質(zhì)量流量或標(biāo)準(zhǔn)體積流量都必須通過流體密度進(jìn)行換算，必須考慮流體工況變化引起的流體密度變化。造成流量測量誤差的因素主要有：管道流速不均造成的測量誤差;不能準(zhǔn)確確定流體工況變化時(shí)的介質(zhì)密度;將濕飽和蒸汽假設(shè)成干飽和蒸汽進(jìn)行測量。這些誤差如果不加以限制或消除，渦街流量計(jì)的總測量誤差會(huì)很大。</p><p style="text-indent:25px">孔板流量計(jì)在天然氣計(jì)量中的誤差原因分析：1 節(jié)流裝置，1.1孔板制造及安裝，采用孔板流量計(jì)時(shí)，對孔板加工的技術(shù)要求十分嚴(yán)格，必須符合國家標(biāo)準(zhǔn)或部頒標(biāo)準(zhǔn)中的規(guī)定，否則，會(huì)給天然氣流量測量結(jié)果帶來誤差。（1）孔板偏心：實(shí)驗(yàn)表明，孔板偏心引起的計(jì)量誤差一般在2%以內(nèi)，孔徑比β值愈高，偏心率影響愈大，所以，應(yīng)避免采用β值高的孔板。（2）孔板彎曲：由于安裝或維修不當(dāng)，使孔板發(fā)生彎曲或變形，導(dǎo)致流量測量誤差較大。在法蘭取壓的孔板上進(jìn)行測試結(jié)果，孔板彎曲產(chǎn)生的大的誤差約為3.5%。（3）節(jié)流裝置內(nèi)突出物：節(jié)流裝置中伸入管內(nèi)的墊片、焊縫等也會(huì)使流量測量產(chǎn)生一定的誤差，誤差大小與突出物的位置、孔板與突出物的距離以及突出高度有關(guān)。試驗(yàn)證明，當(dāng)β=0.7，突出物**于孔板上游2倍管徑處時(shí)，產(chǎn)生的誤差大的；若突出物位于上游孔板處，誤差為16%～50%，若將突出物位于孔板下游時(shí)，對計(jì)量準(zhǔn)確度的影響要小些。差壓式流量計(jì)是根據(jù)安裝于管道中流量檢測件與流體相互作用產(chǎn)生的差壓。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="孔板流量計(jì)價(jià)格,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039080282827/1708933.png"></div><p style="text-indent:25px">在電磁流量計(jì)附近加負(fù)壓防止閥，打開閥門接通大氣壓，以防止在傳感器內(nèi)產(chǎn)生負(fù)壓。電磁流量計(jì)下游接有垂直管道時(shí)，若用流量傳感器上游閥門來關(guān)閉或調(diào)節(jié)流量，傳感器測量管內(nèi)將形成負(fù)壓。為了防止負(fù)壓，需加背壓或使用下游閥門來調(diào)節(jié)和關(guān)閉流量。電磁流量計(jì)適當(dāng)?shù)木S護(hù)空間，大口徑流量計(jì)往往安裝在儀表井內(nèi)，為了管道安裝、接線、檢查和維護(hù)的方便，需要留有適當(dāng)?shù)目臻g。為了觀測、接線和維護(hù)的方便，儀表安裝應(yīng)距地面有一定的高度，以便于清洗、安裝。渦輪流量計(jì)的抗雜質(zhì)能力強(qiáng)。插入式流量計(jì)直銷</p><p style="text-indent:25px">流量計(jì)要盡量避開鐵磁性物體及具有強(qiáng)電磁場的設(shè)備。孔板流量計(jì)價(jià)格</p><p style="text-indent:25px">流量計(jì)保溫辦法：用保溫資料保溫，即用保溫資料將儀器外表易凍或怕凍的部位包起來。冬天來暫時(shí)要查看、常常排污，避免包裝的保溫資料破損。伴熱辦法：1、蒸汽伴熱辦法：即運(yùn)用管蒸汽暖氣保溫。冬天保溫送汽之前要查看一下蒸汽保溫管路是不是疏通或阻塞。較好的蒸汽是24小時(shí)通的，不要太熱，有時(shí)還要依據(jù)氣候溫度改動(dòng)來調(diào)整供保溫汽量，以避免溫度太高使變送器引壓管內(nèi)冷凝液汽化影響變送器作業(yè)或因溫度太低使變送器引壓管內(nèi)冷凝液冷凍影響變送器作業(yè)疏通。2、保溫維護(hù)箱辦法：a、電熱管伴熱保溫箱，由箱體、加熱器、外表托架等三大部分構(gòu)成，其構(gòu)造方式與維護(hù)箱一樣，所不一樣的是箱內(nèi)裝有電器加熱設(shè)備，起熱設(shè)備是由電熱管，溫度操控器構(gòu)成，箱體旁邊面裝有插座，當(dāng)接通電源后，箱內(nèi)加熱到所需溫度時(shí)，再由溫度操控器接通電源持續(xù)升溫。經(jīng)過重復(fù)作業(yè)使箱內(nèi)溫度能保持在必定范圍內(nèi)。孔板流量計(jì)價(jià)格</p><p style="text-indent:25px">上海翼爾電子科技有限公司致力于儀器儀表，是一家生產(chǎn)型的公司。公司業(yè)務(wù)涵蓋流量，壓力，溫度，物液位等，價(jià)格合理，品質(zhì)有保證。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競爭力，努力學(xué)習(xí)行業(yè)知識(shí)，遵守行業(yè)規(guī)范，植根于儀器儀表行業(yè)的發(fā)展。上海翼爾電子秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營理念，全力打造公司的重點(diǎn)競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2147271.html</p></div></div></div></div></div><div id="zt8z74v" class="page-right twoColRt"><div 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