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style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>無錫熱式氣體質(zhì)量流量計(jì)哪家好,流量計(jì)</p><p><span>***更新：</span>2021-02-03 11:12:59</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="ukikk6c" 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="k4u4mys" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="yoa44ss" class="box"><p><p style="text-indent:25px">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,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，無錫熱式氣體質(zhì)量流量計(jì)哪家好,但是本質(zhì)的區(qū)別在于孔板為中心收縮型節(jié)流裝置，無錫熱式氣體質(zhì)量流量計(jì)哪家好,而V錐為邊壁收縮型節(jié)流裝置，無錫熱式氣體質(zhì)量流量計(jì)哪家好。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(jì)克服了以上缺點(diǎn)。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)；無錫熱式氣體質(zhì)量流量計(jì)哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫熱式氣體質(zhì)量流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436288996836659/3226440.png"></div><p style="text-indent:25px">差壓式流量計(jì)應(yīng)用范圍特別,在封閉管道的流量測量中各種對象都有應(yīng)用,如流體方面:單相、混相、潔凈、臟污、粘性流等;工作狀態(tài)方面:常壓、高壓、真空、常溫、高溫、低溫等;管徑方面:從幾mm到幾m;流動條件方面:亞音速、音速、脈動流等。它在各工業(yè)部門的用量約占流量計(jì)全部用量的1/4~1/3?？装逡詢?nèi)孔銳角線來保證精度，因此對腐蝕、磨損、結(jié)垢、臟污敏感，長期使用精度難以保證，需每年拆下強(qiáng)檢一次。采用法蘭連接，易產(chǎn)生跑、冒、滴、漏問題，增加了維護(hù)工作量。工業(yè)發(fā)達(dá)國家近年P(guān)D流量計(jì)(不包括家用煤氣表和家用水表)的銷售金額占流量儀表的13%~23%;我國約占20%,1990年產(chǎn)量(不包括家用煤氣表)估計(jì)為34萬臺,其中橢圓齒輪式和腰輪式分別約占70%和20%。無錫熱式氣體質(zhì)量流量計(jì)哪家好質(zhì)量流量計(jì)是根據(jù)測量管振動原理測量的流量儀表；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫熱式氣體質(zhì)量流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289195098254/5407997.png"></div><p style="text-indent:25px">渦街流量計(jì)的局限性：（1）口徑越大，分辨率越低，通常滿管時流量計(jì)用于DN400以下。（2）對管道機(jī)械振蕩較活絡(luò)，不宜用于強(qiáng)振蕩場所。（3）當(dāng)流體有壓力脈動或流量脈動時，示值大幅度偏高，影響較大，因而不適用于脈動流。（4）流體溫度太高時，傳感器還有艱難，通常流體溫度≤420℃?？装辶髁坑?jì)的局限性：（1）規(guī)模度窄，因?yàn)橥獗硇盘枺ú顗海┡c流量為平方關(guān)系，通常規(guī)模度*3:1～4:1。（2）丈量度在流量計(jì)中屬中等水平。因?yàn)楹芏嘁蛩氐挠绊憮渌访噪x，度難以進(jìn)步。（3）節(jié)流裝置與差壓顯現(xiàn)外表之間引壓管線為薄弱環(huán)節(jié)，易發(fā)生走漏、阻塞及凍住、信號失真等毛病。（4）壓損大（指孔板、噴嘴）。（5）現(xiàn)場裝置條件要求較高，如需較長的直管段（指孔板、噴嘴），通常難以滿意</p><p style="text-indent:25px">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(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(jì)特別是大口徑電磁流量計(jì)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.電磁流量計(jì)的應(yīng)用有一定局限性，它只能測量導(dǎo)電介質(zhì)的液體流量，不能測量非導(dǎo)電介質(zhì)的流量；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫熱式氣體質(zhì)量流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289158887356/6747137.png"></div><p style="text-indent:25px">浮子流量計(jì)浮子流量計(jì),又稱轉(zhuǎn)子流量計(jì),是變面積式流量計(jì)的一種,在一根由下向上擴(kuò)大的垂直錐管中,圓形橫截面的浮子的重力是由液體動力承受的,從而使浮子可以在錐管內(nèi)自由地上升和下降。浮子流量計(jì)是*次于差壓式流量計(jì)應(yīng)用范圍寬廣的一類流量計(jì),特別在小、微流量方面有舉足輕重的作用。80年代中期,日本、西歐、美國的銷售金額占流量儀表的15%~20%。我國產(chǎn)量1990年估計(jì)在12~14萬臺,其中95%以上為玻璃錐管浮子流量計(jì)。特點(diǎn):(1)玻璃錐管浮子流量計(jì)結(jié)構(gòu)簡單,使用方便,缺點(diǎn)是耐壓力低,有玻璃管易碎的較大風(fēng)險(xiǎn);(2)適用于小管徑和低流速;(3)壓力損失較低。流量計(jì)有堰槽式流量計(jì)，它是通過測量液位來反映流量。上海氣體渦輪流量計(jì)廠家</p><p style="text-indent:25px">渦輪流量計(jì)特點(diǎn)：抗雜質(zhì)能力強(qiáng)、抗電磁干擾和抗振能力強(qiáng);無錫熱式氣體質(zhì)量流量計(jì)哪家好</p><p> 孔板流量計(jì)測量老不準(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、被測介質(zhì)工況參數(shù)與設(shè)計(jì)節(jié)流裝置時采用的參數(shù)不一致，按相關(guān)公式修正，必要時應(yīng)重新計(jì)算差壓值；6、節(jié)流裝置前后直管段長度不夠，應(yīng)調(diào)整直管段長度；7、直管段內(nèi)徑超差，實(shí)測直管段內(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)槿肟诙耍世刃蔚囊粋?cè)為出口端。如果裝反了，顯示將會偏小很多。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，如果孔板使用時間較長，特別是在被測介質(zhì)夾雜固體顆粒等雜物情況下，都會造成孔板的幾何形狀和尺寸的變化，如果造成開孔變大或開孔邊緣變鈍，測量壓差就會變小，流量顯示就會偏低。解決辦法：對孔板進(jìn)行重新加工。 </p> <p> <br /> </p> <p> <br /> 無錫熱式氣體質(zhì)量流量計(jì)哪家好</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3143403.html</p></div></div></div></div></div><div id="we66qke" class="page-right twoColRt"><div id="62c44w8" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kgcy2us" class="recomPic likePro"><a 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