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href="http://www.cdcfah.com/cp/second-yiqiyibiao_wybez/">物位儀表</a>?<a href="http://www.cdcfah.com/cp/third-wybez_ldwj/">雷達物位計</a>?寧夏無線雷達物位計歡迎咨詢西安倫騫電器設備供應</p><div id="z7hdptn" class="leftbox clearfix"><h1>寧夏無線雷達物位計歡迎咨詢西安倫騫電器設備供應</h1><div id="3fxd3lf" class="proBig"><div id="fdpbnhl" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662280996094/353423.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="h3t3t5l" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662280996094/353423.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="bbxbf33" class="content"><p><span>需求數量：</span>0</p><p><span>價格要求：</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>產品關鍵詞：</span>寧夏無線雷達物位計,物位計</p><p><span>***更新：</span>2021-01-31 09:16:53</p><p><span id="click" >瀏覽次數：2次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="7zbnz3v" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">西安倫騫電器設備有限責任公司</a></p><p><span>聯系人：</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>網址: </span>http://xalunqian.shop.88360.com</p><p><span>手機: </span>138-91837328</p><p><span>地址: </span>高新區(qū)發(fā)展大道25號軍民融合創(chuàng)新港</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="fptfxb3" class="page-proshow02"><p class="title">詳細說明</p><div id="xpzfz5h" class="box"><p><p> 一體式超聲波物位計的概述： </p> <p> 聲波頻率超過20kHz的聲波稱為超聲波，超聲波是機械波的一種，即是機械振動在彈性介質中的一種傳播過程，寧夏無線雷達物位計，它的特征是頻率高、波長短、繞射現象小，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，尤其是在對光不透明的固體中，超聲波可穿透幾十米的長度，碰到雜質或界面就會有明顯的反射。有超聲波在介質中傳播原理可知，若介質壓力、溫度、密度、濕度等條件一定，則超聲波在該介質中傳播速度是一個常數，寧夏無線雷達物位計。因此，當測出超聲波由發(fā)射到遇到液面反射被接收所需要的時間，寧夏無線雷達物位計，則可換算出超聲波通過的路程，即得到了液位的數據。 </p> <p> <br /> 世界上的微波(雷達)物位計通有脈沖法(PULS)和連續(xù)調頻法(FMCW)兩種。寧夏無線雷達物位計</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏無線雷達物位計,物位計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662280996094/353423.png"></div><p> 超聲波液位計用途：液位和料位測量是工業(yè)上經常遇到的一個問題，超聲測位技術有很多優(yōu)點，它不僅能定點和連續(xù)測位，而且能方便的提供遙測或遙控所需的信號。與放射性測位技術相比，超聲技術不需要防護，與激光測距技術相比，它又有簡單和經濟的優(yōu)點，同時超聲技術一般不需要運動部件，所以在安裝和維護上又相應比較方便。超聲波物位計可廣泛應用于石油、礦業(yè)、發(fā)電廠、化工廠、水處理廠、污水處理站、農業(yè)用水、環(huán)保監(jiān)測、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、明渠、空間定位等許多行業(yè)。超聲波物位計原理：物位測量過程中，超聲波信號由超聲波探頭發(fā)出，經液體或固體物料表面反射后折回，由同一個探頭接收，測量超聲波的整個運行時間，從而實現物位的測量。聲波傳輸距離與聲速和聲傳輸時間的關系可用公式表示：超聲波物位計的算式L：超聲波探頭距所測料面距離。單位：m；v：經溫度補償后的聲速值。單位：m/s；t：測量范圍內聲波的運行時間。寧夏無線雷達物位計超聲波物位計又分為很多型號，比如防腐超聲波物位計，固體式超聲波料位計，固一體式超聲波料位計等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏無線雷達物位計,物位計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661375087891/15454.png"></div><p> 重錘式料位計：優(yōu)點：測量不受介質密度、顆粒大小的影響。缺點：機械內部易落灰塵影響測量效果；機械磨損較嚴重，需經常維護，花費較大；重錘易發(fā)生被物料埋住現象，發(fā)生掉錘頭、斷帶故障。 </p> <p> 超聲波物位計：優(yōu)點：安裝方便，性能穩(wěn)定，測量精度高，價格低廉。缺點：對溫度，粉塵，蒸汽，壓力的影響比較敏感。 </p> <p> 雷達物位計：優(yōu)點：安裝方便，性能穩(wěn)定，測量精度高。對溫度，壓力的影響不敏感，可以用來連續(xù)測量腐蝕性液體、高黏度液體和有毒液體的液位。它沒有可動部件、不接觸介質、沒有測量盲區(qū),而且測量精度幾乎不受被測介質的溫度、壓力、相對介電常數的影響,在易燃易爆等惡劣工況下仍能應用。缺點：價格高昂，低頻的雷達體積龐大。對射頻干擾的影響明顯。對被測介質的介電常數有要求。對粉塵和蒸汽的影響和超聲是一樣的。天線容易積灰，影響測量 </p><p style="text-indent:25px">雷達物位計和射頻導納的區(qū)別：射頻導納開關發(fā)射一定的高頻無線電波作用于探頭上，以此分析和確定容器內物位的變化。射頻導納開關對所探材料的不同，無線電波的頻率也隨之改變。射頻導納開關的探頭和容器壁構成了一個間距固定的電容兩級，探頭的絕緣材料和周圍的空氣提供絕緣介質?？諝獗黄渌橘|所取代時，探頭與容器壁所構成的電容量將改變，這一變化將引起作用于射頻導納開關探頭的無線電波的變化。這一變化被射頻導納開關內部線路檢測到，與設置值比較，確定其改變量。當與設置值相同時，輸出開關量信號。射頻導納，導納的含義為電學中阻抗的倒數，它由電阻性成分、電容性成分、感性成分綜合而成。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏無線雷達物位計,物位計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661516718750/2404270.png"></div><p style="text-indent:25px">在生石灰窯料位、灰倉料位的應用生石灰窯頂料位溫度高，發(fā)泄部位有時候可達到200多度，物料部位可達靠近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，對波易散射。對普通的雷達，很難適合使用這種勘測背景。針對這種事情狀況，選用雷達，該雷達接收天線認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，能夠克服有顆粒、粉塵等卑劣的勘測背景，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，同時又又減低了儀表的背景溫度，保證雷達液位計相宜的勘測背景，可延長儀表的運用生存的年限。雷達物位計具有不受介質比重的影響，不受介電常數變化的影響，不需要現場校調等優(yōu)點。寧夏無線雷達物位計</p><p style="text-indent:25px">非接觸式微波物位計常用喇叭或桿式天線來發(fā)射與接收微波，儀表安裝在料倉頂部，不與被測介質接觸。寧夏無線雷達物位計</p><p> 高頻雷達物位計已經逐漸取代了市場，因為其與低頻脈沖雷達物位計相比，無論是在精度上，還是在使用環(huán)境上都占有較大優(yōu)勢，下面我們就高頻雷達物位計的應用進行詳細介紹。眾所周知，冶金行業(yè)的工況相當復雜，各個工序對于物位測量的要求均不相同：同時測量介質的性質，測量介質的溫度、壓力，防爆、防護等級，測量環(huán)境有無粉塵、蒸汽和泡沫，容器罐、池、料倉、料庫的幾何尺寸及安裝位置都會對所使用儀表提出不同要求。因此，儀表選型前必須對使用的工況環(huán)境做認真、詳細了解和分析，必要的情況下要到使用現場做實地勘查，才能保證獲得zui佳的使用效果。在選擇雷達物位計時首先要考慮天線材質和頻率的不同。應用時盡量選用26GHz高頻雷達物位計。26GHz高頻雷達物位計的天線種類很多，各有特點：GDRD-55型高頻雷達物位計的天線，是全四氟（PTFE）密封天線，適合工況較好（測距短，液面穩(wěn)定）的液體，腐蝕性液體。少量的揮發(fā)物對天線只造成輕微污染。一般應用在水處理車間的GDRD-55型高頻雷達物位計，安裝位置為循環(huán)水工序中間水箱上，因水箱內泡沫較多，而且大多數為露天室外安裝。寧夏無線雷達物位計</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3095168.html</p></div></div></div></div></div><div id="bjfrlxh" class="page-right twoColRt"><div id="jvhtxbd" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ntvb3d3" 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配件哪家強信息推薦自業(yè)物資供應" 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