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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>南京熱式氣體質(zhì)量流量計(jì)廠家直供,流量計(jì)</p><p><span>***更新：</span>2020-12-28 09:10:56</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="ixp8l4l" 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="dsur7ia" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="dxpmtnz" class="box"><p><p style="text-indent:25px">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，南京熱式氣體質(zhì)量流量計(jì)廠家直供，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(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?，呈喇叭形的一?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(shí)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，南京熱式氣體質(zhì)量流量計(jì)廠家直供，南京熱式氣體質(zhì)量流量計(jì)廠家直供，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。孔板流量計(jì)又稱為差壓式流量計(jì),廣泛應(yīng)用于氣體、蒸汽和液體的流量測量。南京熱式氣體質(zhì)量流量計(jì)廠家直供</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京熱式氣體質(zhì)量流量計(jì)廠家直供,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289238506436/7289599.png"></div><p style="text-indent:25px">孔板流量計(jì)屬于差壓式流量計(jì)的一種。它具有結(jié)構(gòu)簡單，維修方便，性能穩(wěn)定等特點(diǎn)。現(xiàn)如今孔板流量計(jì)被適用于煤炭、化工、交通、建筑、輕紡、食品、醫(yī)藥、農(nóng)業(yè)、環(huán)境保護(hù)等各個領(lǐng)域。一、工作原理充滿管道的流體流經(jīng)管道內(nèi)的節(jié)流裝置，在節(jié)流件附近造成局部收縮，流速增加，在其上、下游兩側(cè)產(chǎn)生靜壓力差。在已知有關(guān)參數(shù)的條件下，根據(jù)流動連續(xù)性原理和伯努利方程可以推導(dǎo)出差壓與流量之間的關(guān)系而求得流量。其基本公式如下：c－流出系數(shù)無量綱d－工作條件下節(jié)流件的節(jié)流孔或喉部直徑D－工作條件下上游管道內(nèi)徑qm－質(zhì)量流量Kg/sqv－體積流量m3/s?－直徑比d/D無量綱流體的密度Kg/m3可膨脹性系數(shù)無量綱南京熱式氣體質(zhì)量流量計(jì)廠家直供流量計(jì)有節(jié)流式流量計(jì)、畢托管流量計(jì)、均速管流量計(jì)、轉(zhuǎn)子流量計(jì)、靶式流量計(jì)；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京熱式氣體質(zhì)量流量計(jì)廠家直供,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289098819741/4521959.png"></div><p> 超聲波流量計(jì)缺點(diǎn):（1）超聲波流量計(jì)的溫度測量范圍不高，一般只能測量溫度低于200℃的流體。（2）抗干擾能力差。易受氣泡、結(jié)垢、泵及其它聲源混入的超聲雜音干擾、影響測量精度。（3）直管段要求嚴(yán)格，為前**,后5D。否則離散性差，測量精度低。（4）安裝的不確定性，會給流量測量帶來較大誤差。（5）測量管道因結(jié)垢，會嚴(yán)重影響測量準(zhǔn)確度，帶來明顯的測量誤差，甚至在嚴(yán)重時(shí)儀表無流量顯示（6）可靠性、精度等級不高（一般為1.5～2.5級左右），重復(fù)性差。（7）使用壽命短（一般精度只能保證一年）。 </p> <p> <br /> </p> <p> <br /> </p><p> 孔板流量計(jì)安裝對管道的要求：1．孔板流量計(jì)安裝時(shí)應(yīng)配有一段測量管,至少保持**DN、后5DN的等徑直管段，以提高測量精度。2．在孔板流量計(jì)前后若需安裝閥門，比較好選閘閥且在運(yùn)行中全開；調(diào)節(jié)閥則應(yīng)在下游5DN之后的管路中。3．引壓管路的內(nèi)徑與管路長度和介質(zhì)臟污程度有關(guān)，通常在45米以內(nèi)用內(nèi)徑為8-12mm的管子。4．測量液體流量時(shí)引壓管水平段應(yīng)在同一水平面內(nèi)。若是在垂直管道上安裝節(jié)流件，引壓短管之間相距一定的距離（垂線方向），這對差壓變送器的零點(diǎn)有影響，應(yīng)通過“零點(diǎn)遷移”來校正。5．引壓管路應(yīng)有牢固的支架托承，兩根取壓管路應(yīng)盡可能互相靠近并遠(yuǎn)離熱源或震動源，測量水蒸汽流量時(shí)，應(yīng)用保溫材料一同包扎，必須時(shí)（如氣溫0℃以下）加伴熱管防止結(jié)冰。在測量臟污流量時(shí)，應(yīng)附設(shè)隔離器或沉降器。6．引壓管路內(nèi)必須始終保持單相流體狀態(tài)。被測流體是氣體時(shí)，引壓管路（包括差壓計(jì)的壓力腔）內(nèi)全部是氣相；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。為此應(yīng)在引壓管路的比較低點(diǎn)裝排水閥或在比較高點(diǎn)裝排氣閥，在新裝或檢修差壓變送器時(shí)時(shí)應(yīng)特別注意。 </p> <p> <br /> 智能電磁流量計(jì)在使用時(shí)我們要求被測介質(zhì)必須是地電位，一般都是通過管道或法蘭接地；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京熱式氣體質(zhì)量流量計(jì)廠家直供,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289081162701/1953504.png"></div><p style="text-indent:25px">充滿管道的流體，當(dāng)它們流經(jīng)管道內(nèi)的節(jié)流裝置時(shí)，流束將在節(jié)流裝置的節(jié)流件處形成局部收縮，從而使流速增加，靜壓力低，于是在節(jié)流件前后便產(chǎn)生了壓力降，即壓差，介質(zhì)流動的流量越大，在節(jié)流件前后產(chǎn)生的壓差就越大，所以孔板流量計(jì)可以通過測量壓差來衡量流體流量的大小。這種測量方法是以能量守衡定律和流動連續(xù)性定律為基準(zhǔn)的。智能節(jié)流裝置（孔板流量計(jì)）是集流量、溫度、壓力檢測功能于一體，并能進(jìn)行溫度、壓力自動補(bǔ)償?shù)男乱淮髁坑?jì)，該孔板流量計(jì)采用先進(jìn)的微機(jī)技術(shù)與微功耗新技術(shù)，功能強(qiáng)，結(jié)構(gòu)緊湊，操作簡單，使用方便?！装辶髁坑?jì)節(jié)流裝置結(jié)構(gòu)易于復(fù)制，簡單、牢固，性能穩(wěn)定可靠，使用期限長，價(jià)格低廉?！装逵?jì)算采用國際標(biāo)準(zhǔn)與加工▲孔板流量計(jì)應(yīng)用范圍廣，全部單相流皆可測量，部分混相流亦可應(yīng)用?！鴺?biāo)準(zhǔn)型節(jié)流裝置無須實(shí)流校準(zhǔn)，即可投用?！惑w型孔板流量計(jì)安裝更簡單，無須引壓管，可直接接差壓變送器和壓力變送器?？装辶髁坑?jì)孔板計(jì)算采用國際標(biāo)準(zhǔn)與加工；南京熱式氣體質(zhì)量流量計(jì)廠家直供</p><p style="text-indent:25px">孔板流量計(jì)一體型孔板安裝更簡單，無須引壓管，可直接接差壓變送器和壓力變送器。南京熱式氣體質(zhì)量流量計(jì)廠家直供</p><p> 絕大部分轉(zhuǎn)子流量計(jì)必須垂直安裝在無振動的管道上，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()儀表θ≤20°。如果θ=12°則會產(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。2、用于污臟流體的安裝應(yīng)在儀表上游裝過濾器。帶有磁性耦合的金屬管轉(zhuǎn)子流量計(jì)用于可能含磁鐵性雜質(zhì)流體時(shí)，應(yīng)在儀表前裝磁過濾器。要保持浮子和錐管的清潔，特別是小口徑儀表，浮子潔凈程度明顯影響測量值。3、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。南京熱式氣體質(zhì)量流量計(jì)廠家直供</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2600310.html</p></div></div></div></div></div><div id="tnk2wlm" class="page-right twoColRt"><div id="eogd3zg" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="pj8mhjl" class="recomPic likePro"><a href="http://m.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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