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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lkmo88t" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/nanyishiye/637401929349303114/4258389.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="f7lryac" 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>南京差壓式液位計(jì)哪家好,液位計(jì)</p><p><span>***更新：</span>2021-01-06 02:11:09</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="vhzw7zg" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">南儀測(cè)控技術(shù)(上海)有限公司</a></p><p><span>聯(lián)系人：</span>桂經(jīng)理</p><p><span>郵箱: </span>704766500@qq.com</p><p><span>電話: </span>17802114401</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>https://www.nanicontrol.com</p><p><span>手機(jī): </span>021-61559357</p><p><span>地址: </span>滬閔路1871號(hào)9甲幢4樓407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="ehevczw" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3peldkm" class="box"><p><p style="text-indent:25px">投入式液位計(jì)工作原理：投入式液位計(jì)的基本工作原理就是靜壓液位測(cè)量。液體介質(zhì)中，某一個(gè)深度產(chǎn)生的壓力就是測(cè)量點(diǎn)以上的介質(zhì)自身的重量所產(chǎn)生的。它與介質(zhì)的密度和當(dāng)?shù)氐闹亓铀俣瘸烧取Ｍㄟ^公式P=ρgh反映了他們之間的比例關(guān)系。其中P=壓力，ρ＝介質(zhì)密度，g＝重力加速度，h＝測(cè)量點(diǎn)的深度。所以投入式液位計(jì)測(cè)量的物理量其實(shí)是壓力，南京差壓式液位計(jì)哪家好，通過投入式液位計(jì)的標(biāo)定單位mH2O 就可以了解。而實(shí)際的液位必須通過知道密度和重力加速度這兩個(gè)參數(shù)后，通過換算獲得。這樣的換算在工業(yè)領(lǐng)域中通常是通過二次儀表或者PLC進(jìn)行的。投入式液位計(jì)主要測(cè)量鹽酸，南京差壓式液位計(jì)哪家好、硫酸、硝酸、氫氟酸、氫氧化鈉，南京差壓式液位計(jì)哪家好、雙氧水等有腐蝕性的液體，或者化工、電鍍廢水。主要應(yīng)用在測(cè)量腐蝕性介質(zhì)，其具有耐腐蝕強(qiáng)，性能穩(wěn)定等優(yōu)點(diǎn)?！　RT雷達(dá)料位計(jì)和UT超聲波液位計(jì)有何區(qū)別？南京差壓式液位計(jì)哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京差壓式液位計(jì)哪家好,液位計(jì)" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637401929349303114/4258389.png"></div><p style="text-indent:25px">超聲波液位計(jì)的原理是測(cè)量一個(gè)超聲波脈沖從發(fā)出到返回整個(gè)過程所需的時(shí)間。超聲波液位計(jì)垂直安裝在液體的表面，它向液面發(fā)出一個(gè)超聲波脈沖，經(jīng)過一段時(shí)間，超聲波液位計(jì)的傳感器接收到從液面反射回的信號(hào)，信號(hào)經(jīng)過變送器電路的選擇和處理，根據(jù)超聲波液位計(jì)發(fā)出和接收超聲波的時(shí)間差，計(jì)算出液面到傳感器的距離。超聲波液位計(jì)的主要技術(shù)優(yōu)勢(shì)：超聲波液位計(jì)是非接觸的測(cè)量方式，±0.2%精度，1-25米量程，優(yōu)異的聚焦：5度聲束角，多種傳感器材質(zhì)，內(nèi)置全量程的溫度補(bǔ)償。超聲波液位計(jì)測(cè)量會(huì)有腐蝕（酸、堿）的介質(zhì)、有污染的場(chǎng)合（下水道），或者容易產(chǎn)生粘附物的物質(zhì)。比較適合于那些無法用物理方式接觸的液體。南京差壓式液位計(jì)哪家好磁浮子式液位計(jì)量程：由測(cè)量范圍H確定。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京差壓式液位計(jì)哪家好,液位計(jì)" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637401929322340235/4292944.png"></div><p style="text-indent:25px">鍋爐液位計(jì)水位測(cè)量的重要性是人所共知的，然而長(zhǎng)期以來鍋爐汽包水位連續(xù)測(cè)量技術(shù)方面采用的平衡容器式（差壓式）測(cè)量方法存在許多無法改進(jìn)的缺陷，主要體現(xiàn)在以下幾個(gè)方面：1、不能實(shí)施全工況測(cè)量，存在“假水位”測(cè)量、在鍋爐啟、停、排空、連排、事故等不穩(wěn)定運(yùn)行工況下建立穩(wěn)定差壓條件時(shí)間較長(zhǎng)、恢復(fù)時(shí)間較長(zhǎng)或干脆不能建立正常差壓，需要人工干預(yù)等問題。2 、在穩(wěn)定工況條件下，由于受結(jié)構(gòu)限制，不能徹底解決因水側(cè)絕溫造成的系統(tǒng)測(cè)量誤差的補(bǔ)償問題。在鍋爐缺、滿水等事故工況條件下，系統(tǒng)測(cè)量誤差過大可能帶來嚴(yán)重后果3、結(jié)構(gòu)復(fù)雜，靜密封點(diǎn)多，施工規(guī)模大并存在冬季保溫問題。4、測(cè)量時(shí)滯較長(zhǎng)，不能即時(shí)反應(yīng)鍋爐水位變化，測(cè)量信號(hào)調(diào)節(jié)質(zhì)量差。5、由于存在冷凝筒放熱，使用成本極高。這些缺陷都是由于差壓式測(cè)量原理及其對(duì)系統(tǒng)取樣結(jié)構(gòu)的不合理造成的，無法改進(jìn)。在非正常工況下給鍋爐安全運(yùn)行造成了極大隱患。</p><p style="text-indent:25px">外測(cè)液位儀的基本工作原理：外測(cè)液位儀與當(dāng)前國(guó)內(nèi)外使用的在儲(chǔ)罐或其連通器內(nèi)部探測(cè)液位的儀表原理完全不同，它是利用對(duì)人體無害的微振動(dòng)原理，在容器壁外側(cè)液面以下部位連續(xù)測(cè)出液面的精確高度，而完全不接觸容器內(nèi)的液體和氣體，可比較應(yīng)用于各種容器內(nèi)液面和界面高度的連續(xù)精確測(cè)量。該技術(shù)建立了容器內(nèi)液體和薄殼結(jié)構(gòu)罐體的力學(xué)振動(dòng)特性與液位對(duì)應(yīng)關(guān)系的規(guī)律及數(shù)學(xué)模型。**稱其為“液位測(cè)量的一場(chǎng)技術(shù)**”，并認(rèn)為“開創(chuàng)了儀表發(fā)展的新思路”，在技術(shù)上居國(guó)際水平。當(dāng)外測(cè)液位儀的測(cè)量頭檢測(cè)到容器壁上的微小機(jī)械振動(dòng)（它由液體振動(dòng)特性和容器振動(dòng)特性決定）后，外測(cè)液位儀會(huì)把這些信息經(jīng)過**算法分析，判別、剔除與液位變化無關(guān)的虛假波形，提取出其液位特征量，從而計(jì)算出液面的高度。靜壓式液位計(jì)適用于石油化工、冶金、電力等系統(tǒng)和行業(yè)的各種介質(zhì)的液位測(cè)量。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京差壓式液位計(jì)哪家好,液位計(jì)" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637401929397359789/1777619.png"></div><p style="text-indent:25px">被測(cè)液體密度變化造成的影響:ρ為被測(cè)液體的密度，相比較浮筒外表吸附雜質(zhì)引發(fā)的測(cè)量零點(diǎn)偏移，被測(cè)液體的密度變化造成的測(cè)量誤差更為嚴(yán)重。從公式看液體密度ρ是一個(gè)分母值，其貫徹于測(cè)量的全程，如果被測(cè)液體的真實(shí)密度偏離設(shè)定密度，則公式的斜率就會(huì)發(fā)生變化，造成浮筒液位計(jì)測(cè)量點(diǎn)的整體偏移設(shè)定軌跡，導(dǎo)致浮筒液位計(jì)全程顯示不準(zhǔn)確。被測(cè)液體密度ρ發(fā)生變化主要有以下兩點(diǎn)造成：1、維護(hù)工作不到位.2、設(shè)定密度與實(shí)際密度不一致.浮筒液位計(jì)的測(cè)量原理決定了浮筒可以做成器壁很厚甚至實(shí)心的金屬桿，因此其耐壓性遠(yuǎn)遠(yuǎn)高于浮子液位計(jì)，被比較應(yīng)用于高壓及連鎖保護(hù)系統(tǒng)中。同時(shí)也因這個(gè)特點(diǎn)，浮筒液位計(jì)連接鋼絲的拉力變化范圍小，導(dǎo)致浮筒液位計(jì)抗干擾能力較差，若被測(cè)液體的密度不穩(wěn)定，浮筒液位計(jì)的測(cè)量誤差會(huì)很大，其抗介質(zhì)密度波動(dòng)能力不如磁浮子液位計(jì)，因此要根據(jù)現(xiàn)場(chǎng)實(shí)際情況合理選擇。液位計(jì)可以用在哪些領(lǐng)域？南京差壓式液位計(jì)哪家好</p><p style="text-indent:25px">磁浮子式液位計(jì)液位傳感器由裝在φ20不銹鋼護(hù)管內(nèi)的若干干簧管和若干電阻構(gòu)成。南京差壓式液位計(jì)哪家好</p><p style="text-indent:25px">超聲波液位計(jì)頂部藍(lán)色故障燈的解決辦法：超聲波液位計(jì)常見故障的問題就是頂部藍(lán)色故障燈。結(jié)合實(shí)際列出了以下解決方法：在超聲波持續(xù)零液位時(shí)，頂部燈亮，輸出電流是22MA。而且隔一段時(shí)間以后恢復(fù)液位時(shí)，故障就不能自動(dòng)解除，需要關(guān)電重啟后正常，這給客戶帶來不必要的麻煩甚至損失（例如晚上無人值守的時(shí)候）。解決的辦法就是選用非金屬支架。因?yàn)檫x用非金屬支架后，螺紋處的發(fā)射波能穿透出去，而零點(diǎn)液位的回波信號(hào)會(huì)大于螺紋處的回波信號(hào)。經(jīng)過上述解釋與實(shí)際改進(jìn)后，故障全部解決，供需雙方皆大歡喜。從而進(jìn)一步加強(qiáng)了合作。出現(xiàn)這種故障就是安裝附件的選擇問題，超聲波的發(fā)射除了平面頭以外，在螺紋這里也是有發(fā)射的。如果持續(xù)的零位，在加上安裝件選用金屬支架。超聲波液位計(jì)就會(huì)識(shí)別到支架部分的信號(hào)強(qiáng)度大于平面頭接收的信號(hào)強(qiáng)度。而金屬支架部分與發(fā)射波之間處于盲區(qū)距離。所以超聲波處于保護(hù)狀態(tài)，故障燈常亮，輸出22MA。南京差壓式液位計(jì)哪家好</p><p style="text-indent:25px">南儀測(cè)控技術(shù)(上海)有限公司位于滬閔路1871號(hào)9甲幢4樓407室。公司業(yè)務(wù)分為壓力變送器，溫度傳感器，液位計(jì)，流量計(jì)等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司從事五金、工具多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。南儀測(cè)控技術(shù)秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營(yíng)理念，全力打造公司的重點(diǎn)競(jìng)爭(zhēng)力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2719800.html</p></div></div></div></div></div><div id="uog2rbj" class="page-right twoColRt"><div id="zeldamj" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="akh7odf" 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) 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