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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039069628540/5795593.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="a3hxtuv" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039069628540/5795593.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="iqu8sja" 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>測量氣體流量計(jì)供應(yīng),流量計(jì)</p><p><span>***更新：</span>2021-02-04 07:16:50</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="3s8fl39" 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="3gjjv3z" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="txijac3" class="box"><p><p style="text-indent:25px">流量計(jì)提高計(jì)量準(zhǔn)確度途徑：（1）管道要求：國家標(biāo)準(zhǔn)對計(jì)量管長度、直管、圓度和內(nèi)表面粗糙度等都有嚴(yán)格的技術(shù)要求。當(dāng)計(jì)量管較小長度不能滿足標(biāo)準(zhǔn)要求時(shí)，會(huì)給流量測量結(jié)果帶來偏差，測量氣體流量計(jì)供應(yīng)，其大小與孔徑比β和雷諾數(shù)有關(guān)，測量氣體流量計(jì)供應(yīng)，所以必須在孔板前面的直管上安裝整流器，才能保證計(jì)量準(zhǔn)確度。（2）安裝要求：孔板入口端面必須與管道軸線垂直，其偏差不能超過1度。安裝孔板時(shí)要注意裝入管道的方向，嚴(yán)禁反裝，必須符合標(biāo)準(zhǔn)對不同軸度公差的要求，測量氣體流量計(jì)供應(yīng)。法蘭、孔板與取壓裝置之間的密封墊片厚度不得大于0.03D。墊片的安裝不得突入直管段內(nèi)或取壓裝置內(nèi)腔，不得擋住取壓口及引起取壓位置的改變。新建站場必須在管道吹掃并運(yùn)行幾天后，再將孔板安裝到節(jié)流裝置上，以免孔板被氣體中的液、固體雜質(zhì)損傷或污染。超聲波流量計(jì)可以做成固定式和便攜式兩種形式。測量氣體流量計(jì)供應(yīng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="測量氣體流量計(jì)供應(yīng),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039069628540/5795593.png"></div><p style="text-indent:25px">渦輪流量計(jì)工作原理：在一定的流量范圍內(nèi)，渦輪的轉(zhuǎn)速與流體的流速成正比。流體流動(dòng)帶動(dòng)渦輪轉(zhuǎn)動(dòng)，渦輪的轉(zhuǎn)速轉(zhuǎn)換成電脈沖，用二次表顯示出數(shù)據(jù)，反應(yīng)流體流速。工作特點(diǎn)：①抗雜質(zhì)能力強(qiáng);②抗電磁干擾和抗振能力強(qiáng);③其結(jié)構(gòu)與原理簡單，便于維修;④幾乎無壓力損失，節(jié)省動(dòng)力消耗。容積式流量計(jì)工作特點(diǎn)：①計(jì)量精度高;②安裝管道條件對計(jì)量精度沒有影響;③可用于高粘度液體的測量;④范圍度寬;⑤直讀式儀表無需外部能源可直接獲得累計(jì)，總量，清晰明了，操作簡便;⑥結(jié)構(gòu)復(fù)雜，體積龐大⑦不適用于高、低溫場合;⑧大部分儀表只適用于潔凈單相流體;⑨噪聲和振動(dòng)較大。常見流量計(jì)哪家正規(guī)流量計(jì)是用于測量管道或明渠中流體流量的一種儀表。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="測量氣體流量計(jì)供應(yīng),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039219306275/8910294.png"></div><p style="text-indent:25px">超聲波流量計(jì)是通過測量流體速度來確定體積流量，對液體應(yīng)該測量它的質(zhì)量流量，儀表測量質(zhì)量流量是通過體積流量乘以人為設(shè)定的密度后得到的，當(dāng)流體溫度變化時(shí)，流體密度是變化的，人為設(shè)定密度值，不能保證質(zhì)量流量的準(zhǔn)確度。只能在測量流體速度的同時(shí)，又測量了流體密度，才能通過運(yùn)算，得到真實(shí)質(zhì)量流量值。渦街流量計(jì)無可動(dòng)部件，測量元件結(jié)構(gòu)簡單，性能可靠，使用壽命長。渦街流量計(jì)測量范圍較多。量程比一般能達(dá)到1：10。渦街流量計(jì)的體積流量不受被測流體的溫度、壓力、密度或粘度等熱工參數(shù)的影響。一般不需單獨(dú)標(biāo)定。它可以測量液體、氣體或蒸汽的流量。</p><p style="text-indent:25px">電磁流量計(jì)工作原理：基于法拉第電磁感應(yīng)定律。在電磁流量計(jì)中，測量管內(nèi)的導(dǎo)電介質(zhì)相當(dāng)于法拉第試驗(yàn)中的導(dǎo)電金屬桿，上下兩端的兩個(gè)電磁線圈產(chǎn)生恒定磁常當(dāng)有導(dǎo)電介質(zhì)流過時(shí)，則會(huì)產(chǎn)生感應(yīng)電壓。管道內(nèi)部的兩個(gè)電極測量產(chǎn)生的感應(yīng)電壓。測量管道通過不導(dǎo)電的內(nèi)襯(橡膠，特氟隆等)實(shí)現(xiàn)與流體和測量電極的電磁隔離。工作特點(diǎn)：①具有雙向測量系統(tǒng);② 傳感器所需的直管段較短，長度為5倍的管道直徑；③ 壓力損失小；④測量不受流體密度、粘度、溫度、壓力和電導(dǎo)率變化的影響；⑤主要應(yīng)用于污水處理方面。要避免流量計(jì)的內(nèi)襯，接觸到油類物質(zhì)以免影響到絕緣內(nèi)襯。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="測量氣體流量計(jì)供應(yīng),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039193935092/5614815.png"></div><p style="text-indent:25px">轉(zhuǎn)子流量計(jì)儀表安裝方向：大部分轉(zhuǎn)子流量計(jì)必須垂直安裝在無振動(dòng)的管道上，不應(yīng)有明顯的傾斜，流體自下而上流過儀表。轉(zhuǎn)子流量計(jì)中心線與鉛垂線間夾角一般不超過5度，高精度(1.5級以上)儀表θ≤20°。如果θ＝12°則會(huì)產(chǎn)生1％附加誤差。儀表無嚴(yán)格上游直管段長度要求，但也有制造廠要求(2-5)D長度的，實(shí)際上必要性不大。轉(zhuǎn)子流量計(jì)擴(kuò)大范圍度的安裝：如果測量要求的流量范圍度寬，范圍度超過10時(shí)，可以在一臺(tái)儀表內(nèi)放兩只不同形狀和重量的浮子，小流量時(shí)取輕浮子讀數(shù)，浮子到頂部后取重浮子讀數(shù)，范圍度可擴(kuò)大到50-100。在安裝和使用流量計(jì)的過程當(dāng)中，應(yīng)該要保持電纜接頭足夠的清潔和干燥并且做好防水防潮的措施。槽式流量計(jì)價(jià)格</p><p style="text-indent:25px">對于開口或半滿管的管道，流量計(jì)應(yīng)安裝在U型管段處。測量氣體流量計(jì)供應(yīng)</p><p style="text-indent:25px">流量計(jì)規(guī)格選擇不當(dāng)，會(huì)使流量計(jì)在超下線或超上限的范圍下運(yùn)行，帶來很大的測量誤差，例如：如果上站來油量很小，一般在30方--40方每小時(shí)，如果選用較大的流量計(jì)必然造成在超下線情況運(yùn)行，造成測量不準(zhǔn)確，而外輸量又很大，一般在110方--160方每小時(shí)，如果外輸所選流量計(jì)規(guī)格小，就必然造成在超上限的情況下運(yùn)行，造成測量不準(zhǔn)確。所以必須根據(jù)現(xiàn)場實(shí)際情況正確選用流量計(jì)，是保證流量計(jì)使用壽命和準(zhǔn)確性的重要環(huán)節(jié)。流量計(jì)規(guī)格應(yīng)為管道實(shí)際運(yùn)行中大的流量的1.2-1.3倍。測量氣體流量計(jì)供應(yīng)</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3156575.html</p></div></div></div></div></div><div id="a2u7ofz" class="page-right twoColRt"><div id="jsj8tok" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="lpvce8r" 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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