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clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="qebtfml" class="twoCol"><div id="aph82jv" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://www.cdcfah.com/cp/second-yiqiyibiao_wybez/">物位儀表</a>?<a href="http://www.cdcfah.com/cp/third-wybez_ldwj/">雷達(dá)物位計(jì)</a>?灰漿池超聲波物位計(jì)怎么樣信息推薦西安倫騫電器設(shè)備供應(yīng)</p><div id="pjqfwy2" class="leftbox clearfix"><h1>灰漿池超聲波物位計(jì)怎么樣信息推薦西安倫騫電器設(shè)備供應(yīng)</h1><div id="gumyzlf" class="proBig"><div id="fu3ri8w" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662778261719/3688819.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8jlsuq3" class="smallimg"><div><p class="pic"><img 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</span>高新區(qū)發(fā)展大道25號(hào)軍民融合創(chuàng)新港</p><p>[當(dāng)前離線(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="s888lcp" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="kugy7wx" class="box"><p><p style="text-indent:25px">射頻導(dǎo)納物位計(jì)的測(cè)量原理：射頻導(dǎo)納是一種從電容式發(fā)展起來(lái)的、防掛料、更可靠、更準(zhǔn)確、適用性更廣的新型物位控制技術(shù)，是電容式物位技術(shù)的升級(jí)。所謂射頻導(dǎo)納，導(dǎo)納的含義為電學(xué)中阻抗的倒數(shù)，它由電阻性成分、電容性成分、感性成分綜合而成，而射頻即高頻無(wú)線(xiàn)電波譜，所以射頻導(dǎo)納可以理解為用高頻無(wú)線(xiàn)電波測(cè)量導(dǎo)納。儀表工作時(shí)，儀表的傳感器與灌壁及被測(cè)介質(zhì)形成導(dǎo)納值，物位變化時(shí)，導(dǎo)納值相應(yīng)變化，電路單元將測(cè)量導(dǎo)納值轉(zhuǎn)換成物位信號(hào)輸出，灰漿池超聲波物位計(jì)怎么樣，灰漿池超聲波物位計(jì)怎么樣，實(shí)現(xiàn)物位測(cè)量，灰漿池超聲波物位計(jì)怎么樣。對(duì)于常用的圓錐形喇叭天線(xiàn)來(lái)說(shuō)，微波的頻率越高，波束的聚焦性能越好。灰漿池超聲波物位計(jì)怎么樣</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="灰漿池超聲波物位計(jì)怎么樣,物位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662778261719/3688819.png"></div><p> 高頻雷達(dá)物位計(jì)已經(jīng)逐漸取代了市場(chǎng)，因?yàn)槠渑c低頻脈沖雷達(dá)物位計(jì)相比，無(wú)論是在精度上，還是在使用環(huán)境上都占有較大優(yōu)勢(shì)，下面我們就高頻雷達(dá)物位計(jì)的應(yīng)用進(jìn)行詳細(xì)介紹。眾所周知，冶金行業(yè)的工況相當(dāng)復(fù)雜，各個(gè)工序?qū)τ谖镂粶y(cè)量的要求均不相同：同時(shí)測(cè)量介質(zhì)的性質(zhì)，測(cè)量介質(zhì)的溫度、壓力，防爆、防護(hù)等級(jí)，測(cè)量環(huán)境有無(wú)粉塵、蒸汽和泡沫，容器罐、池、料倉(cāng)、料庫(kù)的幾何尺寸及安裝位置都會(huì)對(duì)所使用儀表提出不同要求。因此，儀表選型前必須對(duì)使用的工況環(huán)境做認(rèn)真、詳細(xì)了解和分析，必要的情況下要到使用現(xiàn)場(chǎng)做實(shí)地勘查，才能保證獲得zui佳的使用效果。在選擇雷達(dá)物位計(jì)時(shí)首先要考慮天線(xiàn)材質(zhì)和頻率的不同。應(yīng)用時(shí)盡量選用26GHz高頻雷達(dá)物位計(jì)。26GHz高頻雷達(dá)物位計(jì)的天線(xiàn)種類(lèi)很多，各有特點(diǎn)：GDRD-55型高頻雷達(dá)物位計(jì)的天線(xiàn)，是全四氟（PTFE）密封天線(xiàn)，適合工況較好（測(cè)距短，液面穩(wěn)定）的液體，腐蝕性液體。少量的揮發(fā)物對(duì)天線(xiàn)只造成輕微污染。一般應(yīng)用在水處理車(chē)間的GDRD-55型高頻雷達(dá)物位計(jì)，安裝位置為循環(huán)水工序中間水箱上，因水箱內(nèi)泡沫較多，而且大多數(shù)為露天室外安裝。灰漿池超聲波物位計(jì)價(jià)格脈沖波測(cè)距是由天線(xiàn)向被測(cè)物料面發(fā)射一個(gè)微波脈沖，當(dāng)接收到被測(cè)物料面上反射回來(lái)后，來(lái)計(jì)算物料面的距離。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="灰漿池超聲波物位計(jì)怎么樣,物位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661516718750/2404270.png"></div><p style="text-indent:25px">射頻導(dǎo)納物位計(jì)主要由檢測(cè)部分和變送部分組成，檢測(cè)部分包括探頭、保護(hù)套外殼等；變送部分包括振蕩緩沖電路、頻率變換及掛料處理電路、誤差修正放大器、信號(hào)解調(diào)器、調(diào)制驅(qū)動(dòng)放大器、濾波阻尼環(huán)節(jié)、電壓限制及電壓電流轉(zhuǎn)換電路等。根據(jù)電橋原理，由于液位升高而增大的電容使電橋失去平衡，同時(shí)正比于電橋不平衡度的解調(diào)器輸出電壓，經(jīng)濾波放大、輸出阻尼、電壓/電流轉(zhuǎn)換后，輸出與物位成正比的4-20mA電流信號(hào)。無(wú)論是射頻電容物位計(jì)或射頻導(dǎo)納物位計(jì)都能準(zhǔn)確測(cè)量介質(zhì)的物位，但與普通射頻電容物位計(jì)相比，射頻導(dǎo)納物位計(jì)更適合測(cè)量料位，因?yàn)樗梢暂^好地處理掛料對(duì)料位測(cè)量的影響。</p><p> 雷達(dá)物位計(jì)使用的注意事項(xiàng)介電常數(shù)的影響： </p> <p> 低介電常數(shù)和變介電常數(shù)的被測(cè)介質(zhì)，推薦導(dǎo)波雷達(dá)。低介電常數(shù)液體介質(zhì)反射信號(hào)弱，信號(hào)衰減嚴(yán)重，物位波動(dòng)和泡沫散射引起信號(hào)減弱，罐內(nèi)障礙物反射引起虛假信號(hào)，為此就需要發(fā)射較強(qiáng)的電磁波信號(hào)，并采用功能強(qiáng)的微處理器進(jìn)行復(fù)雜的信號(hào)處理。這就使得常規(guī)交流供電雷達(dá)物位計(jì)價(jià)格非常昂貴，但仍難以較好的解決在上述條件下的物位測(cè)量問(wèn)題。導(dǎo)波雷達(dá)和常規(guī)雷達(dá)一樣，采用傳輸時(shí)間來(lái)測(cè)量介質(zhì)物位，信號(hào)自烴類(lèi)[介電常數(shù)2~3]液體表面或自水[介電常數(shù)80]面反射回傳的時(shí)間一樣的，不同的只是信號(hào)幅度[強(qiáng)度]的差別。普通雷達(dá)須考慮介質(zhì)的影響，比較難辯識(shí)返回的各種信號(hào)，從雜散信號(hào)中檢出真正的物位信號(hào)，而導(dǎo)波雷達(dá)*需測(cè)量電磁波的傳輸時(shí)間即可，無(wú)需信號(hào)的處理和辨別。阻旋物位計(jì)具有耐高溫，測(cè)量結(jié)果準(zhǔn)確，抗干擾強(qiáng)等特點(diǎn)，他具有防抖性能，防塵密封性能和較高的性?xún)r(jià)比。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="灰漿池超聲波物位計(jì)怎么樣,物位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661131484375/2206726.png"></div><p> 導(dǎo)波雷達(dá)物位計(jì)，是依據(jù)時(shí)域反射原理(TDR)為基礎(chǔ)的雷達(dá)料位計(jì)。導(dǎo)波雷達(dá)料位計(jì)是依據(jù)時(shí)域反射原理(TDR)為基礎(chǔ)的雷達(dá)料位計(jì)，雷達(dá)料位計(jì)的電磁脈沖以光速沿鋼纜或探棒傳播，當(dāng)遇到被測(cè)介質(zhì)表面時(shí)，雷達(dá)料位計(jì)的部分脈沖被反射形成回波并沿相同路經(jīng)返回到脈沖發(fā)射裝置，發(fā)射裝置與被測(cè)介質(zhì)表面的距離同脈沖在其間的傳播時(shí)間成正比，經(jīng)計(jì)算得出液位高度。 </p> <p> 測(cè)量范圍: </p> <p> H----測(cè)量范圍L----空罐距離 </p> <p> B----頂部盲區(qū) </p> <p> E----探頭到罐壁的小距離 </p> <p> 頂部盲區(qū)是指物料比較高料面與測(cè)量參考點(diǎn)之間的小距離。 </p> <p> 底部盲區(qū)是指纜繩比較低部附近無(wú)法精確測(cè)量的一段距離。 </p> <p> 頂部盲區(qū)和底部盲區(qū)之間是有效測(cè)量距離。 </p> <p> 注意: </p> <p> 使用導(dǎo)波雷達(dá)物位計(jì)只有物料處于頂部盲區(qū)和底部盲區(qū)之間時(shí)，才能保證罐內(nèi)物位的可靠測(cè)量。 </p> <p> <br /> </p> <p> <br /> 棒式，用于測(cè)量液體介質(zhì)或重量輕的固體介質(zhì)，量程可達(dá)6米。26G高頻雷達(dá)物位計(jì)聯(lián)系方式</p><p style="text-indent:25px">物位測(cè)量中的微波一般是定向發(fā)射的，通常用波束角來(lái)定量表示微波發(fā)射和接收的方向性。灰漿池超聲波物位計(jì)怎么樣</p><p> 超聲波液位計(jì)用途：液位和料位測(cè)量是工業(yè)上經(jīng)常遇到的一個(gè)問(wèn)題，超聲測(cè)位技術(shù)有很多優(yōu)點(diǎn)，它不*能定點(diǎn)和連續(xù)測(cè)位，而且能方便的提供遙測(cè)或遙控所需的信號(hào)。與放射性測(cè)位技術(shù)相比，超聲技術(shù)不需要防護(hù)，與激光測(cè)距技術(shù)相比，它又有簡(jiǎn)單和經(jīng)濟(jì)的優(yōu)點(diǎn)，同時(shí)超聲技術(shù)一般不需要運(yùn)動(dòng)部件，所以在安裝和維護(hù)上又相應(yīng)比較方便。超聲波物位計(jì)可廣泛應(yīng)用于石油、礦業(yè)、發(fā)電廠、化工廠、水處理廠、污水處理站、農(nóng)業(yè)用水、環(huán)保監(jiān)測(cè)、食品（釀酒業(yè)，飲料業(yè)、添加劑、食用油、奶制品）、抗洪防汛、水文監(jiān)測(cè)、明渠、空間定位等許多行業(yè)。超聲波物位計(jì)原理：物位測(cè)量過(guò)程中，超聲波信號(hào)由超聲波探頭發(fā)出，經(jīng)液體或固體物料表面反射后折回，由同一個(gè)探頭接收，測(cè)量超聲波的整個(gè)運(yùn)行時(shí)間，從而實(shí)現(xiàn)物位的測(cè)量。聲波傳輸距離與聲速和聲傳輸時(shí)間的關(guān)系可用公式表示：超聲波物位計(jì)的算式L：超聲波探頭距所測(cè)料面距離。單位：m；v：經(jīng)溫度補(bǔ)償后的聲速值。單位：m/s；t：測(cè)量范圍內(nèi)聲波的運(yùn)行時(shí)間。灰漿池超聲波物位計(jì)怎么樣</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2503324.html</p></div></div></div></div></div><div id="imtartv" class="page-right twoColRt"><div id="vkhtlc7" class="box01 margin10 clearfix"><h3><a 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