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src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787983144531/1416355.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="u2vg3k2" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787983144531/1416355.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="69vjyai" 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>煤粉儲倉料位計(jì)規(guī)格,料位計(jì)</p><p><span>***更新：</span>2020-12-18 03:14:13</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="8nlptbk" 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="zor8jyb" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="cpe5bbh" class="box"><p><p> 料位計(jì)的工藝特點(diǎn)：由于不同的工業(yè)生產(chǎn)過程的特點(diǎn)不同，所以料位計(jì)需針對不同的工藝條件來確定。為了能夠更明確地分析物位儀表，料位儀表的工作原理、特點(diǎn)和應(yīng)用環(huán)境，必須對物位測量的工藝要求進(jìn)行明確分析。 </p> <p> 首先我們來分析液位測量的工藝特點(diǎn): </p> <p> 1.液面是規(guī)則表面。但當(dāng)液體流進(jìn)、流出時(shí)容易產(chǎn)生波動或生產(chǎn)過程中出現(xiàn)起泡、沸騰等變化時(shí)同樣也會產(chǎn)生波動。 </p> <p> 2.容器內(nèi)發(fā)生有液體各處密度、黏度或溫度等物理量不均勻的現(xiàn)象。 </p> <p> 3.容器內(nèi)發(fā)生有高壓、高溫，煤粉儲倉料位計(jì)規(guī)格，煤粉儲倉料位計(jì)規(guī)格，煤粉儲倉料位計(jì)規(guī)格、液體黏度過大、大量臟污雜質(zhì)、懸浮物等。 </p> <p> 固體物料的物理、化學(xué)性質(zhì)較復(fù)雜，如有顆粒狀的、也有粉末狀的，并且有些介質(zhì)為大小不均勻的顆粒;固體物料的含水量變化、溫度等也是不均勻的變化;料倉振動、料倉形狀不規(guī)則等。雷達(dá)料位計(jì)對液體、顆粒及漿料連續(xù)物位測量。測量不受介質(zhì)變化、溫度變化、惰性氣體及蒸汽、粉塵等的影響。煤粉儲倉料位計(jì)規(guī)格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="煤粉儲倉料位計(jì)規(guī)格,料位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787983144531/1416355.png"></div><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。 </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，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> 煤粉儲倉料位計(jì)規(guī)格雷達(dá)料位計(jì)和雷達(dá)液位計(jì)以及雷達(dá)水位計(jì)的測量原理是一樣的，但是它們的測量的介質(zhì)不同，應(yīng)用的環(huán)境也不同。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="煤粉儲倉料位計(jì)規(guī)格,料位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787200742187/6101796.png"></div><p style="text-indent:25px">阻旋式料位計(jì)：阻旋式料位計(jì)是一種料位開關(guān)。它也有不同的檢測控制方式，如某產(chǎn)品的基本原理是同步微電動機(jī)經(jīng)減速后，帶動檢測葉片以2.5～5r/min的轉(zhuǎn)速旋轉(zhuǎn)，當(dāng)被測物料的料位上升使葉片的轉(zhuǎn)動受到阻礙時(shí)，檢測機(jī)構(gòu)便圍繞主軸產(chǎn)生旋轉(zhuǎn)位移。此位移首先使一個(gè)微動開關(guān)動作，發(fā)出有料位信號。隨后另一個(gè)微動開關(guān)動作，切斷電動機(jī)電源使其停轉(zhuǎn)。只要此料位不變這種狀態(tài)便一直保持下去。當(dāng)料位下降至葉片失去阻擋時(shí)，檢測機(jī)構(gòu)便依靠彈簧拉力使其恢復(fù)原始狀態(tài)。一個(gè)微動開關(guān)先動作，接通電動機(jī)電源使其旋轉(zhuǎn)，隨后另一個(gè)微動開關(guān)動作發(fā)出無料信號，只要沒有物料阻擋檢測葉片的轉(zhuǎn)動，此種狀態(tài)也將一直保持下去。為防止使用中物料的沖擊，庫側(cè)安裝時(shí)應(yīng)在檢測葉片上方的料倉內(nèi)壁上方安裝防護(hù)板；如采用加長軸頂置垂直安裝時(shí)，則應(yīng)在軸套外安裝保護(hù)套筒。此種料位開關(guān)結(jié)構(gòu)簡單、價(jià)格低廉、維護(hù)方便，多用作粉狀物料料倉的料滿開關(guān)，但不適合高溫下工作。</p><p> 泥渣儲罐雷達(dá)料位計(jì)測量原理:發(fā)射能量很低的極短的微波脈沖通過天線系統(tǒng)發(fā)射并接收。雷達(dá)波以光速運(yùn)行。運(yùn)行時(shí)間可以通過電子部件被轉(zhuǎn)換成物位信號。一種特殊的時(shí)間延伸方法可以確保極短時(shí)間內(nèi)穩(wěn)定和精確的測量。即使工況比較復(fù)雜的情況下，存在虛假回波，用新的微處理技術(shù)和調(diào)試軟件也可以準(zhǔn)確的分析出物位的回波。泥渣儲罐雷達(dá)料位計(jì)技術(shù)參數(shù):工作頻率26G;波束角24°VIVO2042-B1,VIVO2042-B218°VIVO2042-B3帶DN150法蘭14°VIVO2042-B3帶DN200法蘭12°VIVO2042-B3帶DN250法蘭;測量范圍0-35m;重復(fù)性±3mm;分辨率1mm;采樣回波采樣55次/s;響應(yīng)速度>（根據(jù)具體使用情況而定）;輸出信號4-20mA;精度<天線材質(zhì)VIVO2042-B1、VIVO2042-B2為PP/PTFE；VIVO2042-B3為316L不銹鋼;通訊接口HART通訊協(xié)議;過程連接VIVO2042-B1(棒式天線)：螺紋連接或1-1/2NPT;VIVO2042-B2(棒式天線)：翻邊法蘭DN50，DN80，DN100，DN150;VIVO2042-B3(喇叭口形式天線)：法蘭DN50~DN250;電源24VDC(±10%),紋波電壓：1Vpp;耗電量max環(huán)境條件溫度-40℃～+80℃;工作壓力-1～40bar;防護(hù)等級IP68;防爆等級EXiaIICT6;電纜入口2個(gè)M20×。智能型射頻導(dǎo)納料位計(jì)是基于射頻導(dǎo)納原理設(shè)計(jì)的連續(xù)物位測量產(chǎn)品。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="煤粉儲倉料位計(jì)規(guī)格,料位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787381660156/5297429.png"></div><p> 雷達(dá)料位計(jì)的安裝：(1)當(dāng)測量液態(tài)物料時(shí),傳感器的軸線和介質(zhì)表面保持垂直;當(dāng)測量固態(tài)物料時(shí),由于固體介質(zhì)會有一個(gè)堆角,傳感器要傾斜一定的角度。(2)盡量避免在發(fā)射角內(nèi)有造成假反射的裝置。特別要避免在距離天線近的1/3錐形發(fā)射區(qū)內(nèi)有障礙裝置(因?yàn)檎系K裝置越近,虛假反射信號越強(qiáng))。若實(shí)在避免不了,建議用一個(gè)折射板將過強(qiáng)的虛假反射信號折射走。這樣可以減小假回波的能量密度,使傳感器較容易地將虛假信號濾出。(3)要避開進(jìn)料口,以免產(chǎn)生虛假反射。(4)傳感器不要安裝在拱形罐的中心處(否則傳感器收到的虛假回波會增強(qiáng)),也不能距離罐壁很近安裝,安裝位置在容器半徑的1/2處。(5)要避免安裝在有很強(qiáng)渦流的地方。如:由于攪拌或很強(qiáng)的化學(xué)反應(yīng)等,建議采用導(dǎo)波管或旁通管安裝方式。(6)若傳感器安裝在接管上,天線必須從接管伸出來。喇叭口天線伸出接管至少10mm。棒式天線接管長度100mm或250mm。接管直徑250mm?？梢圆扇〖哟蠼庸苤睆降姆椒?以減少由于接管產(chǎn)生的干擾回波。復(fù)合料位控制器采用機(jī)電位控原理，接觸測量料位。煤粉儲倉料位計(jì)規(guī)格</p><p style="text-indent:25px">通過波紋管散熱器，將雷達(dá)天線傳遞的熱量通過散熱器散發(fā)到空氣中，從而降低雷達(dá)表頭的溫度。煤粉儲倉料位計(jì)規(guī)格</p><p style="text-indent:25px">在工業(yè)自動化控制過程中，料位是一個(gè)重要參數(shù)。料位測量的方法很多，針對不同的工況和介質(zhì)，可以使用不同測量原理的料位計(jì)進(jìn)行測量，例如、靜壓式、浮球式、重錘式、超聲波等幾種常用的料位測量儀表，都有各自的特點(diǎn)和應(yīng)用范圍。雷達(dá)料位計(jì)運(yùn)用先進(jìn)的雷達(dá)脈沖波測量技術(shù)，以其優(yōu)良的性能，尤其是在槽罐中有攪拌、溫度高、蒸汽大、強(qiáng)粉塵、介質(zhì)腐蝕性強(qiáng)、易結(jié)疤等惡劣的測量條件下，顯示出其優(yōu)越的性能，在工業(yè)自動化生產(chǎn)中發(fā)揮著重要的作用。煤粉儲倉料位計(jì)規(guī)格</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2449891.html</p></div></div></div></div></div><div id="7zugpo7" class="page-right twoColRt"><div id="ssw871u" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="v4rnd27" 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 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