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<meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center 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id="ihrda7o" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<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>?徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家信息推薦江蘇中徽測(cè)控儀表供應(yīng)</p><div id="b7tn8v8" class="leftbox clearfix"><h1>徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家信息推薦江蘇中徽測(cè)控儀表供應(yīng)</h1><div id="h9j8uwy" class="proBig"><div id="lc48j8z" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436289204346373/8482943.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="omlhjax" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436289204346373/8482943.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8f7x4gl" 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>徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家,流量計(jì)</p><p><span>***更新：</span>2021-01-10 03:08:54</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="37vfb8y" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇中徽測(cè)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(huà): </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(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="lonub7y" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="t3szb9h" class="box"><p><p> 電磁流量計(jì)的應(yīng)用有一定局限性，它只能測(cè)量導(dǎo)電介質(zhì)的液體流量，不能測(cè)量非導(dǎo)電介質(zhì)的流量，例如氣體和水處理較好的供熱用水。另外在高溫條件下其襯里需考慮。 </p> <p> 電磁流量計(jì)是通過(guò)測(cè)量導(dǎo)電液體的速度確定工作狀態(tài)下的體積流量。按照計(jì)量要求，對(duì)于液態(tài)介質(zhì)，應(yīng)測(cè)量質(zhì)量流量，測(cè)量介質(zhì)流量應(yīng)涉及到流體的密度，不同流體介質(zhì)具有不同的密度，徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家，而且隨溫度變化，徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家。如果電磁流量計(jì)轉(zhuǎn)換器不考慮流體密度，徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家，*給出常溫狀態(tài)下的體積流量是不合適的。孔板流量計(jì)又稱(chēng)為差壓式流量計(jì)，是由一次檢測(cè)件(節(jié)流件)和二次裝置(差壓變送器和流量顯示儀)組成；徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289204346373/8482943.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(shí)，電極表面將受污染，經(jīng)常引起零點(diǎn)變動(dòng)，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(shuō)，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(shí)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(jì)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(wú)誤差，附著物的電導(dǎo)率較低時(shí)，上式也成立，但由于會(huì)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(shì)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(shí)，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(cè)流量值不不亂，而引入誤差。綜上所述，在選用流量計(jì)特別是大口徑電磁流量計(jì)時(shí)，應(yīng)考慮今后對(duì)傳感器的電極及襯里的維護(hù)題目。如選用上海光華·愛(ài)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 /> 徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家孔板流量計(jì)應(yīng)用范圍廣，全部單相流皆可測(cè)量，部分混相流亦可應(yīng)用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289195098254/5407997.png"></div><p style="text-indent:25px">孔板流量計(jì)優(yōu)點(diǎn)：標(biāo)準(zhǔn)節(jié)流件是全世界通用的，并得到了國(guó)際標(biāo)準(zhǔn)組織的認(rèn)可，無(wú)需實(shí)流校準(zhǔn)，即可投用，在流量計(jì)中亦是的。結(jié)構(gòu)易于復(fù)制，簡(jiǎn)單、牢固、性能穩(wěn)定可靠、價(jià)格低廉；應(yīng)用范圍廣，包括全部單相流體（液、氣、蒸汽）、部分混相流，一般生產(chǎn)過(guò)程的管徑、工作狀態(tài)(溫度、壓力)皆有產(chǎn)品。檢測(cè)件和差壓顯示儀表可分開(kāi)不同廠(chǎng)家生產(chǎn)，便與專(zhuān)業(yè)化規(guī)模生產(chǎn)；缺點(diǎn)：測(cè)量的重復(fù)性、精確度在流量計(jì)中屬于中等水平，由于眾多因素的影響錯(cuò)綜復(fù)雜，精確度難于提高。范圍度窄，由于流量系數(shù)與雷諾數(shù)有關(guān),一般范圍度*3∶1～4∶1。有較長(zhǎng)的直管段長(zhǎng)度要求，一般難于滿(mǎn)足。尤其對(duì)較大管徑，問(wèn)題更加突出；壓力損失大；通常為維持一臺(tái)孔板流量計(jì)正常運(yùn)行，水泵需要附加動(dòng)力克服孔板的壓力損失。</p><p> 孔板流量計(jì)前后產(chǎn)生一個(gè)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(hào)傳送給差壓變送器,轉(zhuǎn)換成4-20ma.DC模擬信號(hào)輸出,遠(yuǎn)轉(zhuǎn)給流量積算儀,實(shí)現(xiàn)流體流量的計(jì)量.質(zhì)量型流量計(jì),利用智能型差壓變送器,對(duì)工況溫/壓進(jìn)行自動(dòng)補(bǔ)償后,實(shí)現(xiàn)對(duì)流體質(zhì)量流量的測(cè)量 </p> <p> 孔板流量計(jì)要送熱風(fēng)，熱風(fēng)爐離高爐一般比較近，且彎頭較多。過(guò)去曾使用標(biāo)準(zhǔn)孔板，因直管段不夠長(zhǎng)而誤差較大。本儀表因?yàn)橛芯鶋涵h(huán)和多個(gè)取壓口，需要2D長(zhǎng)的直管段即可。安裝在熱風(fēng)爐送風(fēng)管上之后，應(yīng)用情況非常滿(mǎn)意，已經(jīng)有三十幾座熱風(fēng)爐裝上了環(huán)形孔板流量計(jì)，運(yùn)行3年多沒(méi)有故障。污水流量計(jì)結(jié)構(gòu)簡(jiǎn)單、牢固可靠、使用壽命長(zhǎng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289158887356/6747137.png"></div><p> <p> 精度高由于V錐結(jié)構(gòu)無(wú)可動(dòng)部件,使得V錐具有很好的重復(fù)性,一般小于0.1%。由于量程比寬,即它的線(xiàn)性度好,從而使其精度較高。根據(jù)GB17167-2006《用能單位能源計(jì)量器具配備和管理通則》規(guī)定,用于能源計(jì)量的流量計(jì)準(zhǔn)確度等級(jí)要求為:煤氣和天然氣為2.0級(jí)。所以在測(cè)試分離器出口的氣體測(cè)量中,在10∶1的量程范圍內(nèi),V錐加上差壓變送器及二次表的總體誤差不會(huì)低于1.5級(jí),完全能滿(mǎn)足計(jì)量要求。長(zhǎng)期性能好由于錐體的輪廓形狀限制了介質(zhì)的流動(dòng),流體沿著錐體形成了邊界層,這意味著錐體的邊緣不容易受不清潔的流體磨損,從而使開(kāi)孔比β保持不變,使得流量計(jì)可以在很長(zhǎng)時(shí)間內(nèi)保持精度而不必校驗(yàn)。 </p> <p> <br /> </p> <p> <br /> </p> </p> <p> <br /> 質(zhì)量流量計(jì)由于流體的容積受溫度、壓力等參數(shù)的影響，用容積流量表示流量大小時(shí)需給出介質(zhì)的參數(shù)。徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家</p><p style="text-indent:25px">電磁流量計(jì)的電源線(xiàn)，要做好防雷電的工作。特別是夏天，一定做注意這一點(diǎn)。徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家</p><p> 孔板流量計(jì)測(cè)量老不準(zhǔn)，處理方法有技巧！1、差壓管路堵塞，疏通差壓管路；2、差壓計(jì)故障，檢查差壓計(jì)；3、差壓變送器示值明顯偏離，應(yīng)檢查尺示值；4、節(jié)流元件安裝方向有誤，重新安裝節(jié)流元件；5、被測(cè)介質(zhì)工況參數(shù)與設(shè)計(jì)節(jié)流裝置時(shí)采用的參數(shù)不一致，按相關(guān)公式修正，必要時(shí)應(yīng)重新計(jì)算差壓值；6、節(jié)流裝置前后直管段長(zhǎng)度不夠，應(yīng)調(diào)整直管段長(zhǎng)度；7、直管段內(nèi)徑超差，實(shí)測(cè)直管段內(nèi)徑，重新計(jì)算比較大流量；8、節(jié)流孔徑超差，實(shí)測(cè)節(jié)流孔徑，重新計(jì)算比較大流量；9、節(jié)流元件變形，更換節(jié)流元件；10、節(jié)流元件上有附著物，清洗更換節(jié)流元件；11、孔板的尖銳一側(cè)應(yīng)該迎向流體流向?yàn)槿肟诙?，呈喇叭形的一?cè)為出口端。如果裝反了，顯示將會(huì)偏小很多。解決辦法：檢查孔板安裝方向，正確安裝孔板。12、孔板的入口邊緣磨損，如果孔板使用時(shí)間較長(zhǎng)，特別是在被測(cè)介質(zhì)夾雜固體顆粒等雜物情況下，都會(huì)造成孔板的幾何形狀和尺寸的變化，如果造成開(kāi)孔變大或開(kāi)孔邊緣變鈍，測(cè)量壓差就會(huì)變小，流量顯示就會(huì)偏低。解決辦法：對(duì)孔板進(jìn)行重新加工。 </p> <p> <br /> </p> <p> <br /> 徐州金屬轉(zhuǎn)子流量計(jì)廠(chǎng)家</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2778489.html</p></div></div></div></div></div><div id="7ikw88r" class="page-right twoColRt"><div id="mjvc3ob" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3vsubvh" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="jtqx87y" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個(gè)科目真誠(chéng)推薦寧波助學(xué)商務(wù)信息咨詢(xún)供應(yīng)" class="vcenter" 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