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class="proBig"><div id="pjw7q7n" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436288996836659/3226440.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2m2rt3v" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436288996836659/3226440.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3gawdpb" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>常州長頸噴嘴流量計供貨商,流量計</p><p><span>***更新：</span>2021-01-17 03:07:50</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="cryf7bd" 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="3lxzlxj" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="wqsz3fc" class="box"><p><p style="text-indent:25px">保證孔板流量計測量精度：1、對孔板流量計的溫度影響及其修正，流體的溫度變化引起密度變化，壓差與流量的關(guān)系發(fā)生變化，其次，溫度變化引起配管內(nèi)徑、孔板的變化，溫度變化的修正，用溫度計測量現(xiàn)場溫度，輸入二次計，計算溫度變化引起的誤差；2，蒸汽質(zhì)量流量的計算，孔板流量計測量蒸汽時，先由差壓信號求得流量值，再由蒸汽溫度，壓力值查表得出密度，來計算蒸汽流量質(zhì)量。3，孔板流量計進(jìn)行逐臺標(biāo)定。大家都知道，標(biāo)準(zhǔn)孔板只要設(shè)計制造參照相關(guān)標(biāo)準(zhǔn)，不需要實流標(biāo)定就可以直接使用。流出系數(shù)可以用軟件直接算出，但計算機(jī)的計算還是理想的，與現(xiàn)場環(huán)境有一定程度的差異，為了保證測量精度，建議對每個流量計進(jìn)行實際流標(biāo)定，將標(biāo)定的流出系數(shù)與計算結(jié)果進(jìn)行比較，算出出差值，進(jìn)行修正。4，可膨脹性校正。用孔板流量計測量蒸汽、氣體流量時，流體的膨脹性需要補(bǔ)正。具體的補(bǔ)正系數(shù)請參照光圈裝置設(shè)計手冊。5、雷諾數(shù)的修正，常州長頸噴嘴流量計供貨商，孔板流量計的流量系數(shù)與雷諾數(shù)之間有確定的關(guān)系，質(zhì)量流量變化時雷諾數(shù)成比例變化，引起流量系數(shù)變化，常州長頸噴嘴流量計供貨商，常州長頸噴嘴流量計供貨商?？装辶髁坑嬕惑w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。常州長頸噴嘴流量計供貨商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常州長頸噴嘴流量計供貨商,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436288996836659/3226440.png"></div><p style="text-indent:25px">孔板流量計Z大壓差怎么積算孔板流量計Z大壓差怎么積算發(fā)布時間：2014-08-08點擊次數(shù)：1047新聞來源：孔板流量計前后產(chǎn)生一個靜壓力差,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.差壓信號傳送給差壓變送器,轉(zhuǎn)換成4-20ma.DC模擬信號輸出,遠(yuǎn)轉(zhuǎn)給流量積算儀,實現(xiàn)流體流量的計量.質(zhì)量型流量計,利用智能型差壓變送器,對工況溫/壓進(jìn)行自動補(bǔ)償后,實現(xiàn)對流體質(zhì)量流量的測量孔板流量計要送熱風(fēng)，熱風(fēng)爐離高爐一般比較近，且彎頭較多。過去曾使用標(biāo)準(zhǔn)孔板，因直管段不夠長而誤差較大。本儀表因為有均壓環(huán)和多個取壓口，需要10Ｄ長的直管段即可。安裝在熱風(fēng)爐送風(fēng)管上之后，應(yīng)用情況非常滿意，已經(jīng)有三十幾座熱風(fēng)爐裝上了環(huán)形孔板流量計，運行5年沒有故障。泰州電磁流量計生產(chǎn)廠家流量計傳感器上游也應(yīng)該有一定的直管段，一般在5D~10D。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常州長頸噴嘴流量計供貨商,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289174834595/5651638.png"></div><p> 超聲流量計優(yōu)點:（1）超聲波流量計是一種非接觸式測量儀表，可用來測量不易接觸、不易觀察的流體流量和大管徑流量。它不會改變流體的流動狀態(tài)，不會產(chǎn)生壓力損失，且便于安裝。（2）可以測量強(qiáng)腐蝕性介質(zhì)和非導(dǎo)電介質(zhì)的流量。（3）超聲波流量計的測量范圍大，管徑范圍從20mm～５m.（4）超聲波流量計可以測量各種液體和污水流量。（5）超聲波流量計測量的體積流量不受被測流體的溫度、壓力、粘度及密度等熱物性參數(shù)的影響?？梢宰龀晒潭ㄊ胶捅銛y式兩種形式。 </p> <p> <br /> </p> <p> <br /> </p><p style="text-indent:25px">孔板流量計屬于差壓式流量計的一種。它具有結(jié)構(gòu)簡單，維修方便，性能穩(wěn)定等特點?，F(xiàn)如今孔板流量計被適用于煤炭、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)無量綱容積式流量計,又稱定排量流量計,簡稱 PD流量計,在流量儀表中是精度比較高的一類。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常州長頸噴嘴流量計供貨商,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289098819741/4521959.png"></div><p style="text-indent:25px"> 電磁流量計應(yīng)用領(lǐng)域,大口徑儀表較多應(yīng)用于給排水工程;中小口徑常用于高要求或難測場合,如鋼鐵工業(yè)高爐風(fēng)口冷卻水控制,造紙工業(yè)測量紙漿液和黑液,化學(xué)工業(yè)的強(qiáng)腐蝕液,有色冶金工業(yè)的礦漿;小口徑、微小口徑常用于醫(yī)藥工業(yè)、食品工業(yè)、生物化學(xué)等有衛(wèi)生要求的場所。?EMF從50年代初進(jìn)入工業(yè)應(yīng)用以來,使用領(lǐng)域日益擴(kuò)展,80年代后期起在各國流量儀表銷售金額中已占16%~20%。?我國近年發(fā)展迅速,1994年銷售估計為6500~7500臺。國內(nèi)已生產(chǎn)比較大口徑為2~6m的ENF,并有實流校驗口徑3m的設(shè)備能力。電磁流量計是通過測量導(dǎo)電液體的速度確定工作狀態(tài)下的體積流量。泰州電磁流量計生產(chǎn)廠家</p><p style="text-indent:25px">孔板流量計使流速增加，靜壓力低，于是在節(jié)流件前后便產(chǎn)生了壓力降，即壓差；常州長頸噴嘴流量計供貨商</p><p style="text-indent:25px">隨著現(xiàn)在科學(xué)技術(shù)的發(fā)展，儀器儀表行業(yè)發(fā)生了突飛猛進(jìn)的發(fā)展，再加上當(dāng)前計算機(jī)技術(shù)、網(wǎng)絡(luò)技術(shù)的進(jìn)步和發(fā)展，組建網(wǎng)絡(luò)而構(gòu)成實用的監(jiān)控系統(tǒng)，可以提高生產(chǎn)效率和共享信息資源方向發(fā)展。當(dāng)前儀器儀表行業(yè)產(chǎn)品發(fā)展呈現(xiàn)微型化、多功能化、智能化、網(wǎng)絡(luò)化四大發(fā)展趨勢。進(jìn)一步提升我國儀器儀表技術(shù)和水平，有限責(zé)任公司（自然）企業(yè)要順應(yīng)產(chǎn)業(yè)發(fā)展潮流，在穩(wěn)固常規(guī)品種的同時，進(jìn)一步發(fā)展智能儀器儀表，提升產(chǎn)業(yè)數(shù)字化、智能化、集成化水平。伴隨移動互聯(lián)網(wǎng)的爆發(fā)式增長，如今，它已經(jīng)漸漸取代電子商務(wù)成為了整個互聯(lián)網(wǎng)產(chǎn)業(yè)增速**快的領(lǐng)域，而移動終端的入口也隨即成為了傳統(tǒng)行業(yè)的必爭之**達(dá)料位計，雷達(dá)液位計，物位計，水位計行業(yè)進(jìn)軍移動互聯(lián)網(wǎng)實現(xiàn)線上發(fā)展勢在必行。隨著中國的不斷進(jìn)步，世界上只有一個救世主——市場，能救企業(yè)的只有你自己——自強(qiáng)，提高貿(mào)易型重點競爭力才是中國制造業(yè)的獨一出路。以顯微科學(xué)儀器行業(yè)的發(fā)展與變化為例，以親身的實踐為例，毛磊認(rèn)為，隨著經(jīng)濟(jì)的不斷發(fā)展，我國的環(huán)境和實力都發(fā)生了巨大變化，有了完全不同的基礎(chǔ)，這為國產(chǎn)科學(xué)儀器走向**增強(qiáng)了信心。常州長頸噴嘴流量計供貨商</p></p><br /><p>文章來源地址: 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