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src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662721787109/2126722.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2okegik" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662721787109/2126722.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="h2g779k" 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>靜壓型物位計制造商,物位計</p><p><span>***更新：</span>2020-12-02 00:27:03</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="jvhegnp" 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: </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="zo82g9q" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="sxz8xrd" class="box"><p><p> 超聲波物位計主要指標(biāo)介紹： </p> <p> 1、量程。表示超聲波物位計所能測量的較大范圍，反映的是換能器的靈敏度。量程越大，靈敏度越高。超聲波物位計可以配置不同量程的換能器。當(dāng)超聲波衰減快，界面反射差時，為避免超聲波探頭接收到的超聲波信號過弱，而無法與噪音信號區(qū)分，就需要增大換能器的發(fā)射功率。 </p> <p> 2、盲區(qū)。也叫死區(qū)，就是超聲波物位計測量不到的一段距離。超聲波物位計在發(fā)射超聲波脈沖時，不能同時檢測反射回波。由于發(fā)射的超聲波脈沖具有一定的時間寬度，同時發(fā)射完超聲波后傳感器還有余振，期間不能檢測反射回波，靜壓型物位計制造商，靜壓型物位計制造商，因此從探頭表面向下開始的一小段距離無法正常檢測，這段距離稱為盲區(qū)。相同量程的產(chǎn)品，盲區(qū)越小，就說明這個換能器的設(shè)計越好。 </p> <p> 3、溫度，靜壓型物位計制造商。正常范圍是-10~60攝氏度。雖然壓電陶瓷的極限工作溫度一般是150攝氏度，但超聲波物位計在制造過程中的大多數(shù)材料都不能在100攝氏度以上的溫度長期工作。 </p> <p> <br /> 儀表可以空倉調(diào)試。在固體測量中的應(yīng)用可以使用K-頻段的高頻傳感器。靜壓型物位計制造商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="靜壓型物位計制造商,物位計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333662721787109/2126722.png"></div><p> 導(dǎo)波雷達物位計，采用了可發(fā)出高頻率微波，沿著探桿傳播，由于遇到被測介質(zhì)，介電常數(shù)突變，引起反射。發(fā)射脈沖與反射脈沖的時間間隔與被測量介質(zhì)的距離成正比。特殊的時間延伸方法可以確保極短時間內(nèi)穩(wěn)定和精確的測量。即使存在虛假反射的時候，的微處理技術(shù)和軟件也可以準(zhǔn)確地分析出物位回波，儀表可以空倉調(diào)試。在固體測量中的應(yīng)用可以使用K-頻段的高頻傳感器。由于信號的聚焦效果非常好，料倉內(nèi)的安裝物或倉壁的粘附物都不會影響測量。 </p> <p> 工作原理:導(dǎo)波雷達物位計是基于時間行程原理的測量儀表，雷達波以光速運行，運行時間可以通過電子部件被轉(zhuǎn)換成物位信號。探頭發(fā)出高頻脈沖并沿纜繩傳播，當(dāng)脈沖遇到物料表面時反射回來被儀表內(nèi)的jieshouiqi接收，并將距離信號轉(zhuǎn)化為物位信號。 </p> <p> 反射的脈沖信號沿纜式或桿式探頭傳導(dǎo)至儀表電子線路部分，微處理器對此信號進行處理，識別出微波脈沖在物料表面所產(chǎn)生的回波。高頻脈沖雷達物位計生產(chǎn)廠家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(zhì)接觸。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="靜壓型物位計制造商,物位計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661961093750/9791720.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(dāng)采用直流24v供電時，可使用一根3芯電纜線，供電負(fù)端和信號輸出負(fù)端共用一根芯線；當(dāng)采用交流220v供電時，或者當(dāng)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(yīng)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 style="text-indent:25px">超聲波物位計用途：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(yīng)比較方便。超聲波物位計可廣泛應(yīng)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)。雷達物位計具有不受介質(zhì)比重的影響，不受介電常數(shù)變化的影響，不需要現(xiàn)場校調(diào)等優(yōu)點。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="靜壓型物位計制造商,物位計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637333661685566406/5287480.png"></div><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(zhì)中的一種傳播過程，它的特征是頻率高、波長短、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，碰到雜質(zhì)或界面就會有明顯的反射。有超聲波在介質(zhì)中傳播原理可知，若介質(zhì)壓力、溫度、密度、濕度等條件一定，則超聲波在該介質(zhì)中傳播速度是一個常數(shù)。因此，當(dāng)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，則可換算出超聲波通過的路程，即得到了液位的數(shù)據(jù)。 </p> <p> <br /> 物位計是一種新型的電容式連續(xù)測量物位儀表，解決了傳統(tǒng)電容式物位計溫漂大、標(biāo)定難、怕粘附的難題。靜壓型物位計哪家便宜</p><p style="text-indent:25px">接觸式微波物位計一般采用金屬波導(dǎo)體(桿或鋼纜)來傳導(dǎo)微波，儀表從倉頂安裝，導(dǎo)波桿直達倉底。靜壓型物位計制造商</p><p> 液體、物位的測量：對于液面相對平穩(wěn)的罐體，且被測液體的介電常數(shù)較高，可以選擇普通雷達物位計。對于液面波動大、或帶有攪拌的罐體，或被測液體的介電常數(shù)較低，應(yīng)推薦導(dǎo)波雷達。因為導(dǎo)波管對液面有整型作用，且導(dǎo)波雷達的微波反射不易受環(huán)境條件變化的影響。被測液體的介電常數(shù)和密度變化對測量結(jié)果沒有影響。對于被測液體的粘度≥500cst，且液體粘附性較強的情況，不能選擇導(dǎo)波管方式測量，因為粘附和結(jié)晶會堵死導(dǎo)波管。從而形成虛假物位?？梢赃x擇導(dǎo)波桿方式來測量。當(dāng)介質(zhì)在探頭上的涂污對測量物位的影響可分為兩種：膜狀涂污和橋接。膜狀涂污是在物位降低時，高粘液體或輕油漿在探頭上形成的一種覆蓋層。由于這種涂污在探頭上涂層均勻，因此對測量基本無影響；但橋接性涂污的形成卻能導(dǎo)致明顯的測量誤差，當(dāng)塊狀或條狀介質(zhì)污垢粘結(jié)于波導(dǎo)體上或橋接于兩個波導(dǎo)體之間時，就會在該點測得虛假物位。靜壓型物位計制造商</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2224336.html</p></div></div></div></div></div><div id="crtqsuw" class="page-right twoColRt"><div id="l3pmj3r" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="jdkm74b" 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(yīng)" class="vcenter" 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