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<meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center 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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="ebsrnov" class="twoCol"><div id="egh8bs3" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<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>?26G不銹鋼高頻雷達(dá)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="8a3exdp" class="leftbox clearfix"><h1>26G不銹鋼高頻雷達(dá)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="l3xx8ea" class="proBig"><div id="vj7jfmx" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662477080078/5623596.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lnvplms" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662477080078/5623596.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3poami2" 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>陜西省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣,物位計(jì)</p><p><span>***更新：</span>2020-11-29 07:16:13</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="o8x2rx2" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">西安倫騫電器設(shè)備有限責(zé)任公司</a></p><p><span>聯(lián)系人：</span>付海飛</p><p><span>郵箱: </span>xalunqian@163.com</p><p><span>電話: </span>13891837328</p><p><span>傳真: </span>138_</p><p><span>網(wǎng)址: </span>http://xalunqian.shop.88360.com</p><p><span>手機(jī): </span>138-91837328</p><p><span>地址: </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] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="kbsdpgr" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="m8dhdkw" class="box"><p><p> 導(dǎo)波雷達(dá)物位計(jì)測(cè)量液體時(shí)的安裝指導(dǎo): </p> <p> 下述安裝指導(dǎo)適用于桿式和纜式探頭的導(dǎo)波雷達(dá)物位計(jì)，管式探頭測(cè)量與安裝方式無關(guān)。 </p> <p> 安裝位置: </p> <p> l 距離罐壁的距離建議為罐直徑的1/6-1/4(至少300mm，混凝土罐至少400mm); </p> <p> l 不要安裝在金屬罐中間; </p> <p> l 不要裝在下料口處; </p> <p> l 選擇探頭長(zhǎng)度時(shí)，注意探頭底部距罐底約大于30mm; </p> <p> l 注意介質(zhì)溫度。 </p> <p> 罐內(nèi)障礙物： </p> <p> l 安裝時(shí)注意探頭距離障礙至少200mm。 </p> <p> 干擾的祛除： </p> <p> l 干擾回波yizhi:軟件可實(shí)現(xiàn)對(duì)干擾回波的yizhi，26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣，從而達(dá)到理想測(cè)量效果； </p> <p> l 旁通管及導(dǎo)波管(*適用于液體)對(duì)于粘度不打于500cst，可采用旁通管，導(dǎo)波管或管式來避免干擾。 </p> <p> 液體標(biāo)準(zhǔn)安裝： </p> <p> 對(duì)于粘度≤500cst且不易產(chǎn)生粘附的介質(zhì)，管式探頭是比較好方案，特點(diǎn)如下: </p> <p> l 優(yōu)越的可靠性： </p> <p> l 可用于介電常數(shù)大于等于1.4的任何介質(zhì)，26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣，測(cè)量與介質(zhì)的導(dǎo)電性無關(guān)； </p> <p> l 罐內(nèi)障礙物及短管尺寸不影響測(cè)量； </p> <p> l 比桿式探頭能承受的橫向壓力高； </p> <p> l 對(duì)于高粘度的介質(zhì)，建議使用桿式探頭； </p> <p> 儀表在臥罐及立罐上的安裝； </p> <p> l 管式探頭及桿式探頭zui長(zhǎng)可到6米對(duì)于測(cè)量距離超過6米的罐，可選用8mm纜式探頭； </p> <p> l 安裝及固定方式同固體粉倉(cāng)測(cè)量； </p> <p> l 對(duì)距罐壁的距離無限制，只要避免探頭接觸罐壁即可； </p> <p> l 如果罐內(nèi)障礙物比較多或過于靠近探棒時(shí)，請(qǐng)選用管式探頭，26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣。 </p> <p> <br /> 雷達(dá)物位計(jì)通過導(dǎo)波管或旁通管進(jìn)行測(cè)量，測(cè)量管起到導(dǎo)波作用。26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣,物位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662477080078/5623596.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 /> 26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣非接觸式微波物位計(jì)安裝簡(jiǎn)單、維護(hù)量少，并且不受料倉(cāng)內(nèi)氣體成分、粉塵、溫度變化等的影響。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣,物位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662563906250/4210194.png"></div><p style="text-indent:25px">在生石灰窯料位、灰倉(cāng)料位的應(yīng)用生石灰窯頂料位溫度高，發(fā)泄部位有時(shí)候可達(dá)到200多度，物料部位可達(dá)靠近1000度；氣體流速大，塵土顆粒大，液體濃度大；下部物料是不規(guī)則石頭，料面不公平，對(duì)波易散射。對(duì)普通的雷達(dá)，很難適合使用這種勘測(cè)背景。針對(duì)這種事情狀況，選用雷達(dá)，該雷達(dá)接收天線認(rèn)為合適而使用拋物面接收天線，收繳平面或物體表面的大小大，不易失真；波束角小，只有4度，發(fā)射微波束集中；微波頻率26GHz，頻率高,波參差，洞穿力強(qiáng)，能夠克服有顆粒、粉塵等卑劣的勘測(cè)背景，克服了塊狀物料的散射問題；在喇叭口的上部，接上壓縮空氣施行吹掃，一是防止粉塵蓄積在接收天線上，擁塞拋物線收繳面，同時(shí)又又減低了儀表的背景溫度，保證雷達(dá)液位計(jì)相宜的勘測(cè)背景，可延長(zhǎng)儀表的運(yùn)用生存的年限。</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。物位測(cè)量中的微波一般是定向發(fā)射的，通常用波束角來定量表示微波發(fā)射和接收的方向性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣,物位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661131484375/2206726.png"></div><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)量問題。導(dǎo)波雷達(dá)和常規(guī)雷達(dá)一樣，采用傳輸時(shí)間來測(cè)量介質(zhì)物位，信號(hào)自烴類[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，無需信號(hào)的處理和辨別。超聲波物位計(jì)又分為很多型號(hào)，比如防腐超聲波物位計(jì)，固體式超聲波料位計(jì)，固一體式超聲波料位計(jì)等。26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣</p><p style="text-indent:25px">微波發(fā)射和返回之間的時(shí)差很小，對(duì)于幾米的行程時(shí)間要以納秒來計(jì)量。脈沖測(cè)距采用規(guī)則的周期重復(fù)信號(hào)。26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣</p><p> 一體式超聲波物位計(jì)的概述： </p> <p> 聲波頻率超過20kHz的聲波稱為超聲波，超聲波是機(jī)械波的一種，即是機(jī)械振動(dòng)在彈性介質(zhì)中的一種傳播過程，它的特征是頻率高、波長(zhǎng)短、繞射現(xiàn)象小，另外方向性好，能夠成為射線而定向傳播。超聲波在液體、固體中衰減很小，因而穿透能力強(qiáng)，尤其是在對(duì)光不透明的固體中，超聲波可穿透幾十米的長(zhǎng)度，碰到雜質(zhì)或界面就會(huì)有明顯的反射。有超聲波在介質(zhì)中傳播原理可知，若介質(zhì)壓力、溫度、密度、濕度等條件一定，則超聲波在該介質(zhì)中傳播速度是一個(gè)常數(shù)。因此，當(dāng)測(cè)出超聲波由發(fā)射到遇到液面反射被接收所需要的時(shí)間，則可換算出超聲波通過的路程，即得到了液位的數(shù)據(jù)。 </p> <p> <br /> 26G不銹鋼高頻雷達(dá)物位計(jì)怎么樣</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2192447.html</p></div></div></div></div></div><div id="mu2uqms" class="page-right twoColRt"><div id="trs8ctu" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ymiev3p" 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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