外縛式超聲波流量計(jì)價(jià)格查詢歡迎來電西安倫騫電器設(shè)備供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="超聲波流量計(jì):超聲波流量計(jì)也是比較常見的流量計(jì)，它的安裝在所有流量計(jì)的安裝中是zui簡(jiǎn)單便捷的，只要選擇一個(gè)合適的測(cè)量點(diǎn)，把測(cè)量點(diǎn)處的管道參數(shù)輸入到流量計(jì)中，然后把探頭固定在管道上即可。超聲波流量計(jì)的安裝主要遵循以下3點(diǎn)：1.選擇充滿流體的"><meta name="keywords" content="外縛式超聲波流量計(jì)價(jià)格查詢,流量計(jì)"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" 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src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520071162109/9600659.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8rs8h83" 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>外縛式超聲波流量計(jì)價(jià)格查詢,流量計(jì)</p><p><span>***更新：</span>2021-01-27 03:11:25</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="poqdk7j" 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="lv7dxjv" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="yikxo7l" class="box"><p><p> 超聲波流量計(jì): </p> <p> 超聲波流量計(jì)也是比較常見的流量計(jì)，它的安裝在所有流量計(jì)的安裝中是zui簡(jiǎn)單便捷的，只要選擇一個(gè)合適的測(cè)量點(diǎn)，把測(cè)量點(diǎn)處的管道參數(shù)輸入到流量計(jì)中，然后把探頭固定在管道上即可。 </p> <p> 超聲波流量計(jì)的安裝主要遵循以下3點(diǎn)：1.選擇充滿流體的材質(zhì)均勻質(zhì)密、易于超聲波傳輸?shù)墓芏?，如垂直管段或水平管段?.安裝距離應(yīng)選擇上游大于10倍直管徑，外縛式超聲波流量計(jì)價(jià)格查詢、下游大于5倍直管徑以內(nèi)無任何閥門、彎頭、變徑等均勻的直管段，安裝點(diǎn)應(yīng)充分遠(yuǎn)離閥門、泵、高壓電和變頻器等干擾源。3. 避免安裝在管道系統(tǒng)的比較高點(diǎn)或帶有自由出口的豎直管道上。4，外縛式超聲波流量計(jì)價(jià)格查詢，外縛式超聲波流量計(jì)價(jià)格查詢. 對(duì)于開口或半滿管的管道，流量計(jì)應(yīng)安裝在U型管段處。實(shí)際上大部分浮子流量計(jì)同一儀表可用于液體也可用于氣體，結(jié)構(gòu)上是通用的。外縛式超聲波流量計(jì)價(jià)格查詢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="外縛式超聲波流量計(jì)價(jià)格查詢,流量計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520071162109/9600659.png"></div><p style="text-indent:25px">流量計(jì)口徑與相連的管道口徑尺寸盡量相同，以減少流動(dòng)干擾，造成計(jì)量誤差；法蘭式和夾裝式流量計(jì)安裝時(shí)，應(yīng)注意法蘭之間密封墊片內(nèi)孔尺寸大于流量計(jì)和工藝管道通徑 6-8mm 及否同軸，以避免因其產(chǎn)生干擾流而影響計(jì)量精確度；插入式流量計(jì)安裝時(shí)，將短管及法蘭焊到管道上時(shí)必須確保流體正對(duì)著靶片受力面，焊接短管高度在100mm（從管道內(nèi)壁至法蘭密封面的距離）；對(duì)于新完工的工藝管道，應(yīng)先進(jìn)行初步吹掃后再安裝流量計(jì)；測(cè)量管外壁上箭頭所指方向?yàn)楸粶y(cè)介質(zhì)流向；流量計(jì)殼體必須可靠接地，若無接地條件應(yīng)向廠方說明；流量計(jì)連接法蘭規(guī)格執(zhí)行GB/T系列標(biāo)準(zhǔn)，也可以根據(jù)用戶要求特殊加工（以出廠校驗(yàn)單為準(zhǔn)）。分別為前后閥和旁通閥；為流量計(jì)，L≥10D 和L≥5D分別為前后直管段長(zhǎng)度，D為管道公稱直徑。壁掛式明渠流量計(jì)流量計(jì)量是計(jì)量科學(xué)技術(shù)的組成部分之一，它與國民經(jīng)濟(jì)、**建設(shè)、科學(xué)研究有密切的關(guān)系。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="外縛式超聲波流量計(jì)價(jià)格查詢,流量計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332519894707031/5463.png"></div><p> 當(dāng)超聲波在不均勻流體中傳送時(shí)，聲波會(huì)產(chǎn)生散射。流超聲流量計(jì)體與發(fā)送器間有相對(duì)運(yùn)動(dòng)時(shí)，發(fā)送的聲波信號(hào)和被流體散射后接收到的信號(hào)之間會(huì)產(chǎn)生多普勒頻移。多普勒頻移與流體流速成正比。被測(cè)流體的區(qū)域位于發(fā)射波束與接收到的散射波束的交叉之處。要求波束很窄，使兩波束的夾角θ不致受到波束寬度影響。也可只采用一個(gè)變換器既作為發(fā)送器又作為jieshouqi，這種方式稱為單通道式。在單通道多普勒血液流量計(jì)中，發(fā)送器間隔地發(fā)送聲脈沖信號(hào)，在兩個(gè)聲脈沖間隔的時(shí)間中，接收從血管壁和血管內(nèi)紅血球反射回來的聲脈沖信號(hào)。采用控制線路選擇給定距離處的紅血球反射信號(hào),通過比較后得到多普勒頻移,它與血液流速成正比。在已知血管橫截面時(shí)可得到血液流量。 </p><p> 按照外加磁場(chǎng)類型的不同，電磁流量計(jì)主要有直流式和感應(yīng)式兩種。直流式電磁流量計(jì)的外加恒下磁場(chǎng)B垂直于管軸，C、D處裝有兩個(gè)電極，用來測(cè)量流體橫越磁場(chǎng)時(shí)所感生的電動(dòng)勢(shì)U。流量Q可用下式求出： </p> <p> Q=(1/K).(UA/Bd) </p> <p> 式中A為管道橫截面積；d為管道直徑；k為修正系數(shù)，用來修正導(dǎo)出公式時(shí)未計(jì)及的因素（如流量計(jì)管道內(nèi)的流速事實(shí)上并不均勻）的影響。在常的流量計(jì)中，k約為0.8，但對(duì)于特定尺寸、用于特定工況的電磁流量計(jì)，則要用容積法（一定時(shí)間內(nèi)流過的容積）標(biāo)定k值。磁場(chǎng)可由永久磁鐵產(chǎn)生，磁鐵材料一般是鋁－鎳－鈷合金。流量大時(shí)，因管徑較大，故采用無鐵芯激磁繞組，通以它常直流電流來產(chǎn)生一個(gè)近似均勻的磁場(chǎng)。金屬管浮子流量計(jì)和口徑大于15mm的玻璃管浮子流量計(jì)稍高些，流速在0.5-1.5m/s之間。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="外縛式超聲波流量計(jì)價(jià)格查詢,流量計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520990390625/5084448.png"></div><p> 按照要求正確安裝后的橢圓齒輪流量計(jì)，使用時(shí)即可保證足夠的精度，通常累計(jì)值的精度可達(dá)0.5級(jí)，是一種較橢圓齒輪流量計(jì)為準(zhǔn)確的流量計(jì)量?jī)x表。但是，如果使用時(shí)被測(cè)介質(zhì)的流量過小，儀表的泄漏誤差的影響就會(huì)突出，不能再保證足夠的測(cè)量精度。因此，不同型號(hào)規(guī)格的橢圓齒輪流量計(jì)對(duì)zui小使用流量有一允許值，只有當(dāng)實(shí)際被測(cè)流量大于該下限流量允許值時(shí)，測(cè)量精度才能得到保證。 </p> <p> 其次，使用橢圓齒輪流量計(jì)要注意被測(cè)介質(zhì)的溫度不能過高，否則不僅會(huì)增加測(cè)量誤差，而且有使齒輪發(fā)生卡死的可能。為此，橢圓齒輪流量計(jì)在儀表所規(guī)定的使用溫度范圍內(nèi)使用。 </p> <p> 長(zhǎng)期使用后的橢圓齒輪流量計(jì)，其內(nèi)部的齒輪會(huì)被腐蝕和磨損，從而影響測(cè)量精度。因此，要經(jīng)常注意觀察，并定期拆下進(jìn)行檢查，若條件允許要定期進(jìn)行標(biāo)定。測(cè)量蒸汽只能用專門設(shè)計(jì)的金屬管浮子流量計(jì)或在標(biāo)準(zhǔn)型儀表上加裝附加構(gòu)件。插入式電磁流量計(jì)用途</p><p style="text-indent:25px">20世紀(jì)的60年代以后，測(cè)量?jī)x表開始向精密化、小型化等方向發(fā)展。外縛式超聲波流量計(jì)價(jià)格查詢</p><p> 大部分結(jié)構(gòu)浮子流量計(jì)只能用于自下向上垂直流的管道安裝。浮子流量計(jì)可用于較低雷諾數(shù)，選用粘度不敏感形狀的浮子，流通環(huán)隙處雷諾數(shù)只要大于40或500，雷諾數(shù)變化流量系數(shù)即保持常數(shù)，亦即流體粘度變化不影響流量系數(shù)。這數(shù)值遠(yuǎn)低于標(biāo)準(zhǔn)孔板等節(jié)流差壓式儀表比較低雷諾數(shù)104-105的要求。 </p> <p> 浮子流量計(jì)應(yīng)用局限于中小管徑，普通全流型浮子流量計(jì)不能用于大管徑，玻璃管浮子流量計(jì)比較大口徑100mm，金屬管浮子流量計(jì)為150mm，更大管徑只能用分流型儀表。 </p> <p> 使用流體和出廠標(biāo)定流體不同時(shí)，要作流量示值修正。液體用浮子流量計(jì)通常以水標(biāo)定，氣體用空氣標(biāo)定，如實(shí)際使用流體密度、粘度與之不同，流量要偏離原分度值，要作換算修正。外縛式超聲波流量計(jì)價(jià)格查詢</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3027292.html</p></div></div></div></div></div><div id="laxu2ax" class="page-right twoColRt"><div id="mbdqs2y" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="iipwyax" 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" 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