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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="nwt23dp" 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>超聲波物位計(jì)分類,物位計(jì)</p><p><span>***更新：</span>2021-01-25 03:11:15</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="hr87z32" 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="bkhodu2" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="c3afmyv" 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)展起來的、防掛料、更可靠，超聲波物位計(jì)分類、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，而射頻即高頻無線電波譜，所以射頻導(dǎo)納可以理解為用高頻無線電波測(cè)量導(dǎo)納，超聲波物位計(jì)分類。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，超聲波物位計(jì)分類，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，實(shí)現(xiàn)物位測(cè)量。脈沖波測(cè)距是由天線向被測(cè)物料面發(fā)射一個(gè)微波脈沖，當(dāng)接收到被測(cè)物料面上反射回來后，來計(jì)算物料面的距離。超聲波物位計(jì)分類</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="超聲波物位計(jì)分類,物位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662721787109/2126722.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。物位計(jì)價(jià)格查詢射頻導(dǎo)納是一種從電容式發(fā)展起來的、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)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="超聲波物位計(jì)分類,物位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661295029297/6878386.png"></div><p style="text-indent:25px">在工業(yè)生產(chǎn)中，很多地方都應(yīng)用了雷達(dá)液位計(jì)，如蒸吸碳化工段表白桶、熱母液桶、冷母液桶、出堿液緩和chongtu槽，鹽水利工程段的苛化液罐、堿液槽、表白桶、粗鹽水槽；煅燒工段的形成晶體器等，這些個(gè)器皿中有的易形成晶體、帶拌和；有的易揮發(fā)、腐蝕、撩動(dòng)大、流動(dòng)快；還有的溫度高、漿狀有泡沫、水氣。很顯然，接觸式儀表難于達(dá)到要求，以前認(rèn)為合適而使用過差壓變送器，均未獲得成功。而使用了DEC雷達(dá)液位計(jì)后，該雷達(dá)接收天線認(rèn)為合適而使用6〞喇叭口接收天線，23°的波束角，26GHz的微波頻率。有點(diǎn)易形成晶體的媒介，可認(rèn)為合適而使用蒸汽反吹。全部的這些個(gè)已成功應(yīng)用在出產(chǎn)中，并獲得了美好的效果。</p><p> 在現(xiàn)場(chǎng)實(shí)際運(yùn)用時(shí)，會(huì)有各種因素對(duì)其穩(wěn)定、可靠的測(cè)量產(chǎn)生影響，下面我們將結(jié)合實(shí)際，講述各種干擾對(duì)超聲波物位計(jì)選用、使用、安裝的影響。超聲波流量計(jì) </p> <p> (1)介質(zhì)及環(huán)境溫度的影響 </p> <p> 超聲波從物料表面反射時(shí)，其反射頻率會(huì)受到物料溫度的影響而發(fā)生變化，為了補(bǔ)償這一變化，超聲波探頭內(nèi)裝有溫度傳感器，當(dāng)探頭向處理器發(fā)送反射信號(hào)的同時(shí)，也把溫度信號(hào)送到微處理器，處理器將自動(dòng)補(bǔ)償由于溫度對(duì)料位測(cè)量的影響。 </p> <p> 此外，為了保證探頭的可靠工作，要求環(huán)境溫度不超過60℃。 </p> <p> (2)攪拌器對(duì)物位計(jì)測(cè)量的影響 </p> <p> 如果物料容器內(nèi)裝攪拌器，它同樣會(huì)反射超聲波信號(hào)，造成假反射回波，并被傳送到微處理器。微處理器將根據(jù)統(tǒng)計(jì)學(xué)原理處理真假面具回波，所以要求超聲波從物料表面反射的回波應(yīng)至少為從攪拌器臂反射的回波的3倍。適當(dāng)降低攪拌器的轉(zhuǎn)速，或?qū)⑻筋^偏離攪拌中心，都可以有效消除攪拌器產(chǎn)生的假面反射對(duì)料位測(cè)量的影響。雷達(dá)物位計(jì)發(fā)射功率很低的極短的微波通過天線系統(tǒng)發(fā)射并接收。雷達(dá)波以光速運(yùn)行。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="超聲波物位計(jì)分類,物位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661584121094/4334047.png"></div><p style="text-indent:25px">雷達(dá)物位計(jì)在行業(yè)中的應(yīng)用，已經(jīng)很普及了，但是雷達(dá)物位計(jì)的參數(shù)及選擇型非常重要，雷達(dá)物位計(jì)是一種新型測(cè)量?jī)x表，它可以應(yīng)用于很多領(lǐng)域，對(duì)液體、顆粒及漿料連續(xù)物位測(cè)量，測(cè)量不受介質(zhì)變化、溫度變化、惰性氣體及蒸汽、粉塵、泡沫等的影響。雷達(dá)料位計(jì)的精度為1MM，量程70米，耐450度高溫、40公斤高壓，雷達(dá)料位計(jì)計(jì)適用于危險(xiǎn)區(qū)域酸堿儲(chǔ)罐、漿料儲(chǔ)罐、固體顆粒、小型儲(chǔ)油罐，各類導(dǎo)電、非導(dǎo)電介質(zhì)、腐蝕性介質(zhì)，很多用戶用來測(cè)量原油、漿料、原煤、粉煤、揮發(fā)性液體及固體介質(zhì)。雷達(dá)物位計(jì)采用非接觸式測(cè)量方法。目前較成熟的非接觸測(cè)量技術(shù)有超聲波、核輻射和微波。物位計(jì)價(jià)格查詢</p><p style="text-indent:25px">如果只對(duì)物料高度是否到達(dá)某一位置進(jìn)行檢測(cè)稱為限位測(cè)量。完成這種測(cè)量任務(wù)的儀表叫做物位計(jì)。超聲波物位計(jì)分類</p><p> 射頻電容物位計(jì)可以解決大多數(shù)高溫，高壓，腐蝕性液位的測(cè)量。它采用美國(guó)公司射頻電容技術(shù)和芯片及聚四氟乙烯做絕緣材料。與雙法蘭液位計(jì)，浮筒式液位計(jì)，同位素式液位計(jì)相比，它是一種簡(jiǎn)單，耐用，方便的儀表。 </p> <p> 特點(diǎn):<span style="display:none;"></span>結(jié)構(gòu)簡(jiǎn)單，安裝容易。耐腐蝕性強(qiáng)，用聚四氟乙烯做探桿。耐高溫，一般為200℃，特殊可達(dá)到1000℃。耐高壓，zui高壓為32MPa。 <p> 原理用途： </p> <p> 如果將探桿和容器壁視做兩塊相互平行的電極板，被測(cè)液體視做它們之間的介質(zhì)，那么一個(gè)簡(jiǎn)單的電容形成了。當(dāng)液位上升時(shí)，電容量就會(huì)增加，射頻電路將這一變化轉(zhuǎn)換為模擬信號(hào)輸出。酸類，堿類，氯化物，有機(jī)溶劑，液態(tài)CO2，氨水，PVC粉料，灰料，油水界面，中藥等液**測(cè)量。 </p> 超聲波物位計(jì)分類</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2997080.html</p></div></div></div></div></div><div id="j2o33ro" class="page-right twoColRt"><div id="dx3y3jq" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="29o4bp8" 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="h22axub" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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