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class="proBig"><div id="2jlx8uw" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661202929687/6680290.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="dprdarq" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661202929687/6680290.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="k37nugd" class="content"><p><span>需求數(shù)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(chǎn)品關(guān)鍵詞：</span>高頻脈沖雷達物位計選擇,物位計</p><p><span>***更新：</span>2020-09-14 02:11:07</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="nuwyahj" 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: </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="w2yubn7" class="page-proshow02"><p class="title">詳細說明</p><div id="kgn3oi3" class="box"><p><p> 超聲波測量的工作原理： </p> <p> 超聲波是機械波的一種，即是機械振動在彈性介質(zhì)中的一種傳播過程，它的特征是頻率高、波長短，高頻脈沖雷達物位計選擇、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，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，高頻脈沖雷達物位計選擇，碰到雜質(zhì)或界面就會有明顯的反射，超聲波測量物位就是利用了它的這一特征。 </p> <p> 在超聲波檢測技術(shù)中，高頻脈沖雷達物位計選擇，不管那種超聲波儀器，都必須把電能轉(zhuǎn)換超聲波發(fā)射出去，再接收回來變換成電信號，完成這項功能的裝置就叫超聲波換能器，也稱探頭。如圖所示，將超聲波換能器置于被測液體上方，向下發(fā)射超聲波，超聲波穿過空氣介質(zhì)，在遇到水面時被反射回來，又被換能器所接收并轉(zhuǎn)換為電信號，電子檢測部分檢測到這一信號后將其變成液位信號進行顯示并輸出。雷達物位計適用于粉塵、溫度、壓力變化大，有惰性氣體及蒸汽存在的場合。高頻脈沖雷達物位計選擇</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高頻脈沖雷達物位計選擇,物位計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661202929687/6680290.png"></div><p> 超聲波液位計用途：液位和料位測量是工業(yè)上經(jīng)常遇到的一個問題，超聲測位技術(shù)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(shù)相比，超聲技術(shù)不需要防護，與激光測距技術(shù)相比，它又有簡單和經(jīng)濟的優(yōu)點，同時超聲技術(shù)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(nóng)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(jīng)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(xiàn)物位的測量。聲波傳輸距離與聲速和聲傳輸時間的關(guān)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(jīng)溫度補償后的聲速值。單位：m/s；t：測量范圍內(nèi)聲波的運行時間。推薦智能雷達物位計圖片儀表可以空倉調(diào)試。在固體測量中的應用可以使用K-頻段的高頻傳感器。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高頻脈沖雷達物位計選擇,物位計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662425126953/8109411.png"></div><p> 超聲波物位儀是由微處理器控制的數(shù)字液位儀表。在測量中脈沖超聲波由傳感器發(fā)出，聲波經(jīng)液體表面反射后被同一傳感器接收并轉(zhuǎn)換成電信號。一體式防爆超聲波液位計具有自動功率調(diào)整，溫度補償，抗干擾等功能。一體式防爆超聲波液位計由于采用非接觸測量，被測介質(zhì)幾乎不受控制，可用于強腐蝕性介質(zhì)。防爆超聲波物位儀可采用二線制、三線制或四線制技術(shù)，供電回路和信號輸出回路**，當采用直流24v供電時，可使用一根3芯電纜線，供電負端和信號輸出負端共用一根芯線；當采用交流220v供電時，或者當采用直流24v供電，要求供電回路與信號輸出回路完全隔離時，應使用一根4芯電纜線。直流或交流供電，具有4~20mADC，高低位開關(guān)量輸出。 </p><p> 重錘式料位計：優(yōu)點：測量不受介質(zhì)密度、顆粒大小的影響。缺點：機械內(nèi)部易落灰塵影響測量效果；機械磨損較嚴重，需經(jīng)常維護，花費較大；重錘易發(fā)生被物料埋住現(xiàn)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(zhì)、沒有測量盲區(qū),而且測量精度幾乎不受被測介質(zhì)的溫度、壓力、相對介電常數(shù)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(zhì)的介電常數(shù)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，影響測量射頻導納是一種從電容式發(fā)展起來的、防掛料、更可靠、更準確、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="高頻脈沖雷達物位計選擇,物位計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661961093750/9791720.png"></div><p> 在現(xiàn)場實際運用時，會有各種因素對其穩(wěn)定、可靠的測量產(chǎn)生影響，下面我們將結(jié)合實際，講述各種干擾對超聲波物位計選用、使用、安裝的影響。超聲波流量計 </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，其反射頻率會受到物料溫度的影響而發(fā)生變化，為了補償這一變化，超聲波探頭內(nèi)裝有溫度傳感器，當探頭向處理器發(fā)送反射信號的同時，也把溫度信號送到微處理器，處理器將自動補償由于溫度對料位測量的影響。 </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)攪拌器對物位計測量的影響 </p> <p> 如果物料容器內(nèi)裝攪拌器，它同樣會反射超聲波信號，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)計學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至少為從攪拌器臂反射的回波的3倍。適當降低攪拌器的轉(zhuǎn)速，或?qū)⑻筋^偏離攪拌中心，都可以有效消除攪拌器產(chǎn)生的假面反射對料位測量的影響。世界上的微波(雷達)物位計通有脈沖法(PULS)和連續(xù)調(diào)頻法(FMCW)兩種。推薦智能雷達物位計圖片</p><p style="text-indent:25px">高頻的調(diào)頻雷達技術(shù)尤其適合大型固體料倉的物位測量!高頻脈沖雷達物位計選擇</p><p style="text-indent:25px">儀器儀表是用以檢出、測量、觀察、計算各種物理量、物質(zhì)成分、物性參數(shù)等的器具或設(shè)備。真空檢漏儀、壓力表、測長儀、顯微鏡、乘法器等均屬于儀器儀表。近年來，得益于機械、冶金、石化行業(yè)等儀器儀表服務(wù)領(lǐng)域經(jīng)營狀況的好轉(zhuǎn)，我國儀器儀表制造業(yè)發(fā)展一路向好。儀器儀表在工業(yè)生產(chǎn)過程中扮演著重要的角色，用到各種各樣的儀器儀表，如雷達料位計，雷達物位計，壓力變送器，溫度變送器等為工業(yè)的檢驗、測量和計量提供技術(shù)支撐。在國民經(jīng)濟運行中，智能儀器儀表銷售：網(wǎng)絡(luò)設(shè)備銷售；安防設(shè)備銷售；閥門和旋塞銷售；計算機軟及軸助設(shè)備零售；環(huán)境監(jiān)測**儀器銷售；電氣設(shè)備銷售；機械設(shè)備銷售；電子元器件與機電組件設(shè)備銷售；電子產(chǎn)品銷售；終端計量設(shè)備銷售；終端測試設(shè)備銷售；供應用儀器儀表銷售；電子**設(shè)備銷售；技術(shù)開發(fā)；普通機械設(shè)備安裝服務(wù)；智能儀器儀表制造：儀器儀表修理；儀器儀表制造；環(huán)境監(jiān)測**儀器儀表制造；其他通用儀器制造；電子測量儀器化工。等設(shè)備是提高勞動生產(chǎn)率的倍增器，對國民經(jīng)濟有著巨大的作用和影響力。美國商業(yè)部地區(qū)技術(shù)和標準研究院（NIST）提出的報告稱：美國90年代儀器儀表工業(yè)產(chǎn)值只占工業(yè)總產(chǎn)值的4%，但它對國民經(jīng)濟（GNP）的影響面卻達到66%。儀器儀表在工業(yè)發(fā)展中具有重要作用，這也使得儀器儀表得到快讀發(fā)展。各行各業(yè)對儀器儀表的市場需求也在不斷提升，加工企業(yè)正在發(fā)展中尋求技術(shù)創(chuàng)新和質(zhì)量提升。儀器儀表的質(zhì)量、性能關(guān)系到工業(yè)安全，必須重視。高頻脈沖雷達物位計選擇</p><p style="text-indent:25px">西安倫騫電器設(shè)備有限責任公司總部位于高新區(qū)發(fā)展大道25號軍民融合創(chuàng)新港，是一家智能儀器儀表銷售：網(wǎng)絡(luò)設(shè)備銷售；安防設(shè)備銷售；閥門和旋塞銷售；計算機軟及軸助設(shè)備零售；環(huán)境監(jiān)測**儀器銷售；電氣設(shè)備銷售；機械設(shè)備銷售；電子元器件與機電組件設(shè)備銷售；電子產(chǎn)品銷售；終端計量設(shè)備銷售；終端測試設(shè)備銷售；供應用儀器儀表銷售；電子**設(shè)備銷售；技術(shù)開發(fā)；普通機械設(shè)備安裝服務(wù)；智能儀器儀表制造：儀器儀表修理；儀器儀表制造；環(huán)境監(jiān)測**儀器儀表制造；其他通用儀器制造；電子測量儀器化工。的公司。西安倫騫電器擁有一支經(jīng)驗豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供雷達料位計，雷達物位計，壓力變送器，溫度變送器。西安倫騫電器致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。西安倫騫電器始終關(guān)注儀器儀表行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1271634.html</p></div></div></div></div></div><div id="lyahjln" class="page-right twoColRt"><div id="wax7gyk" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="yifc7xz" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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