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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_lkzq/">料位控制器</a>?料位計(jì)型號貼心服務(wù) 西安倫騫電器設(shè)備供應(yīng)</p><div id="x3xjbda" class="leftbox clearfix"><h1>料位計(jì)型號貼心服務(wù) 西安倫騫電器設(shè)備供應(yīng)</h1><div id="tifhjlc" class="proBig"><div id="ixprjl2" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787845517578/4697461.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="zjg2gas" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787845517578/4697461.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qaxprya" 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>料位計(jì)型號,料位計(jì)</p><p><span>***更新：</span>2020-12-30 03:14:02</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="fel7rjl" 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="b7lipct" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8hc2a2t" class="box"><p><p> 雷達(dá)料位測量原理和主要技術(shù)因素： </p> <p> 雷達(dá)料位計(jì)是利用回波測距原理。發(fā)射天線向被測目標(biāo)發(fā)射微波，被測目標(biāo)的微波被接收天線接收，信號處理器將發(fā)射信號與接收信號比較，計(jì)算出被測距離，并可算出相應(yīng)的物位值。 </p> <p> 微波脈沖來回傳播時(shí)間t由下式?jīng)Q定： </p> <p> t= （1）； </p> <p> 式中a—天線到被測目標(biāo)的距離； </p> <p> c—微波傳播的速度（光速）。 </p> <p> <p> 由于微波在傳播途徑上有衰減和干擾反射，故測量的關(guān)鍵是要能接收到反射回波，并識別出有效回波。接收的回波能量Pk可用簡化的雷達(dá)方程表示如下： </p> <p> Pk=Pτx C x GiGtGr/r4 （2） </p> <p> 式中： Pτ—天線輻射功率；C ——- 經(jīng)驗(yàn)系數(shù)，由經(jīng)驗(yàn)決定；Gi——- 由目標(biāo)表面介電特性及面積決定的反射增益；Gt，Gr—天線發(fā)射和接收效率；r—天線與目標(biāo)間的距離，料位計(jì)型號。 </p> <p> 從式（2）知：接收的回波能量大小與天線的發(fā)射和接收效率以及天線輻射功率有關(guān)，故雷達(dá)料位計(jì)的天線設(shè)計(jì)和形狀很關(guān)鍵關(guān)鍵，現(xiàn)有的天線除號角天線（喇叭口）和棒狀天線外，料位計(jì)型號，料位計(jì)型號，還有平面天線和拋物面天線，為用于介電常數(shù)較小的物料，將纜繩作為天線或安裝導(dǎo)波管，纜繩和導(dǎo)波管一直延伸到庫或倉底，由此來傳遞發(fā)送和接收的電磁波，增強(qiáng)了回波的信號。 </p> 音叉式料位開關(guān)還可以安裝在儲罐頂部來監(jiān)測儲罐中介質(zhì)的物位，這種情況下可根據(jù)要求提供一定長度的加長桿。料位計(jì)型號</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="料位計(jì)型號,料位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787845517578/4697461.png"></div><p style="text-indent:25px">料位是水泥工業(yè)生產(chǎn)過程的主要測量參數(shù)之一，和其他行業(yè)不同，在水泥工業(yè)中主要是固體物料的物位測量，液位測量則很少。固體物料種類繁多，有塊狀、顆粒狀、粉狀，這些物料的介電常數(shù)、容重、溫度、水分含量也各不相同。接觸式測量是過去測量物位的主要手段，如電容式、重錘式、音叉式、阻旋式，攬式等測量方法，由于測量時(shí)儀表和物料是接觸的，在使用過程中往往會出現(xiàn)各種問題，如電容的掛料；重錘的斷錘、埋錘；音叉的堵料等，且日常的維護(hù)量很大。到20世紀(jì)末，水泥工業(yè)開始采用非接觸的物位測量，較早成熟的非接觸的測量技術(shù)有超聲波技術(shù)。輔料倉料位計(jì)圖片采用接觸測量，結(jié)果真實(shí)、準(zhǔn)確可靠;可水平、傾斜與垂直安裝，安裝使用方便。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="料位計(jì)型號,料位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787264482422/5674836.png"></div><p> 粉狀物料的選型：在水泥廠和粉磨站水泥庫一般有4～8個，在水泥廠還有生料均化庫和粉煤灰?guī)?，這些物料全是粉料，非常難測其料位。在庫里的粉料表面非常疏松，微波反射相當(dāng)困難，為此建議采用接觸型雷達(dá)料位計(jì),也可選用**蘭的帶有喇叭天線的非接觸型雷達(dá)料位計(jì)。 </p> <p> 二線制：目前使用的雷達(dá)料位計(jì)大多是一體化的產(chǎn)品，由二線制供電，可直接接控制系統(tǒng)的模塊，輸出4～20mA的模擬信號，可節(jié)省大量電纜；同時(shí)還提供HART數(shù)字信號和各種協(xié)議的現(xiàn)場總線的數(shù)字通信功能，和計(jì)算機(jī)監(jiān)控系統(tǒng)連接非常方便． </p> <p> 結(jié)論：水泥廠的物位測量是水泥生產(chǎn)線自動化系統(tǒng)一個重要組成部分，雷達(dá)料位計(jì)的應(yīng)用解除了人們對水泥廠的物位測量的疑慮，現(xiàn)有雷達(dá)料位計(jì)在品種、度、標(biāo)準(zhǔn)材料、耐壓、耐高溫、防爆等方面都能滿足水泥廠檢測和控制的要求。 </p><p> 雷達(dá)料位計(jì)：雷達(dá)料位計(jì)工作原理和超聲波料位計(jì)類似，它發(fā)射的微波是一種電磁波，其傳播速度不受介質(zhì)的特性影響。它是利用電磁波回波測距原理來實(shí)現(xiàn)料位測量的。微波從天線出發(fā)，到達(dá)被測目標(biāo)經(jīng)反射再被天線接收，按微波來回傳播時(shí)間來計(jì)算的距離反映了料位。一般有脈沖雷達(dá)和調(diào)頻連續(xù)波雷達(dá)2種。由于受粉塵、料面坡度及物料松散程度的影響，微波在傳輸過程中會有衰減，影響其準(zhǔn)確性和可靠性。某公司生產(chǎn)的纜式導(dǎo)波雷達(dá)可以解決傳統(tǒng)雷達(dá)料位計(jì)的上述缺點(diǎn)。它的原理是高頻脈沖從探頭發(fā)出后沿纜繩傳播，當(dāng)脈沖遇到料位表面時(shí)將會反射回來，由jieshouqi接收，信號經(jīng)轉(zhuǎn)換成料位信號。由于微波沿纜繩傳播，脈沖的強(qiáng)度及方向性均不受粉塵及料面松散程度的影響。同時(shí)可通過軟件設(shè)計(jì)對干擾進(jìn)行yizhi。其傳播纜繩經(jīng)過耐磨性、下拉力試驗(yàn)，可以適應(yīng)水泥廠的工況，此種料位計(jì)測量精度高，已在水泥廠成功應(yīng)用。但產(chǎn)品價(jià)格高使應(yīng)用范圍受限制。雙重保護(hù)功能:過載保護(hù)功能避免葉片受過分外力而損壞電機(jī);自動保護(hù)功能，保護(hù)電機(jī)且有效延長其使用壽命。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="料位計(jì)型號,料位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787611914062/688802.png"></div><p> 導(dǎo)波式雷達(dá)料位計(jì)此為雷達(dá)料位計(jì)的一種變型，通常采用脈沖波方式工作。與雷達(dá)料位計(jì)不同微波脈沖不是通過空間傳播，而是通過1根（或2根）從倉頂伸入、直達(dá)倉底的導(dǎo)波體傳播。導(dǎo)波體可以是金屬硬桿或柔性金屬纜繩，微波脈沖沿桿或纜的外側(cè)向下傳播，在被測物料表面被反射，回波被天線接收，由發(fā)射與回波脈沖的時(shí)間差即可計(jì)算出傳播距離。 </p> <p> 優(yōu)點(diǎn)：與超聲波及雷達(dá)料位計(jì)相比，工作穩(wěn)定可靠；同雷達(dá)料位計(jì)一樣，反射信號的強(qiáng)度取決于被測物料的介電率或?qū)щ娐剩珜?dǎo)波式可以測量更低介電率的物料。 </p> <p> 缺點(diǎn)：雙桿（纜）及同軸管式導(dǎo)波體由于電場能量集中，易受外部結(jié)構(gòu)影響；在桿之間（或管內(nèi)部）易積料，產(chǎn)生虛假回波，影響測量效果；埋在物料中的纜繩由于物料重力會產(chǎn)生較大的下拉力，造成纜繩被拉斷等故障。抗干擾，即安即用:由于其內(nèi)部沒有復(fù)雜的電子元件及其放大電路部分，不受任何電磁波干擾。輔料倉料位計(jì)圖片</p><p style="text-indent:25px">雷達(dá)料位計(jì)是非接觸式測量或TDR導(dǎo)波式測量。料位計(jì)型號</p><p style="text-indent:25px">雙纜式導(dǎo)波雷達(dá)液位計(jì)適用范圍及特點(diǎn)：導(dǎo)波微波物位儀表用于對煤炭、電力、水泥、石化等行業(yè)的液體、漿料及顆粒料等介質(zhì)的測量。具有以下特點(diǎn) 1、精度高：測量精度<0.1% 2、免維護(hù)：測量過程無可動部件，不存在機(jī)械部件損壞問題，無須維護(hù)。 3、抗干擾：接觸式測量，抗干擾能力強(qiáng)，可克服蒸汽、泡沫及攪拌對測量的影響。 4、準(zhǔn)確可靠：信號沿著導(dǎo)波管傳輸-可消除假回應(yīng)信號，減少信號丟失。主要技術(shù)參數(shù)：工作頻率：100MHZ~1.8GHZ 測量范圍：0～30米（超過6m采用纜式）測量精度：±1mm、重復(fù) 性： ±2mm 過程溫度：-40～250℃ 過程壓力：<6.0MPa 過程連接：螺紋或者法蘭輸出信號：4～20mA、4~20mA疊加HART協(xié)議供電電壓：24V DC 防爆認(rèn)證：Exia II CT6 外殼保護(hù)等級：IP67 兩線制接線：供電和信號輸出公用一根兩芯線電纜入口：兩個M20ⅹ1.5.料位計(jì)型號</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2622100.html</p></div></div></div></div></div><div id="srjli3m" class="page-right twoColRt"><div id="3oqs7eg" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="333uymy" 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) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="smzroac" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" 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