黑龍江豪華版壁掛式明渠流量計信息推薦西安倫騫電器設(shè)備供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="（1）渦街流量變送器的選擇在飽和蒸汽測量中采用VA型壓電式渦街流量變送器，由于渦街流量計量程范圍寬，因此，在實際應(yīng)用中，一般插入式渦街流量計主要考慮測量飽和蒸汽的流量不得低于渦街流量計的下限，也就是說必須滿足流體流速不得低于5m/s。根據(jù)用"><meta name="keywords" content="黑龍江豪華版壁掛式明渠流量計,流量計"><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" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520922431641/5725344.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="r8sefjj" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520922431641/5725344.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="f2epgxt" 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>黑龍江豪華版壁掛式明渠流量計,流量計</p><p><span>***更新：</span>2021-01-07 07:11:13</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="jc8wctu" 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="btctkgn" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="exe372w" class="box"><p><p> （1）渦街流量變送器的選擇 </p> <p> 在飽和蒸汽測量中采用VA型壓電式渦街流量變送器，由于渦街流量計量程范圍寬，因此，在實際應(yīng)用中，一般插入式渦街流量計主要考慮測量飽和蒸汽的流量不得低于渦街流量計的下限，也就是說必須滿足流體流速不得低于5m/s。根據(jù)用汽量的大小選用不同口徑的渦街流量變送器，而不能以現(xiàn)有的工藝管道口徑來選擇變送器口徑。 </p> <p> （2）壓力補(bǔ)償壓力變送器的選擇 </p> <p> 由于飽和蒸汽管路長，壓力波動較大，黑龍江豪華版壁掛式明渠流量計，必須采用壓力補(bǔ)償，黑龍江豪華版壁掛式明渠流量計，考慮到壓力、溫度及密度的對應(yīng)關(guān)系，黑龍江豪華版壁掛式明渠流量計，測量中只采用壓力補(bǔ)償即可，由于明通公司管道飽和蒸汽壓力在0.3－0.7MPa范圍，壓力變送器的量程選擇1MPa即可。 </p> <p> （3）顯示儀表選擇 </p> <p> 顯示儀表智能流量顯示儀，具有穩(wěn)壓補(bǔ)償、瞬時流量顯示和累積流量積算功能。按介質(zhì)分類:液體流量計、氣體流量計、蒸汽流量計以及固體流量計。黑龍江豪華版壁掛式明渠流量計</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江豪華版壁掛式明渠流量計,流量計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520922431641/5725344.png"></div><p> 電磁流量計接地的原因: </p> <p> 電磁流量計內(nèi)的測量電極處于一個直流或交流電場內(nèi)，如果其環(huán)境不能有效地被屏蔽于一個無干擾的條件下，對測量有嚴(yán)重干擾。傳感器外殼接地與否，直接關(guān)系到測量的精度和穩(wěn)定性，接地導(dǎo)線必須不傳任何干擾電壓，因此電磁流量計要求有非?？煽康慕拥兀龊媒拥仄帘?，否則就會產(chǎn)生干擾電流。然而電磁流量計接地的好處：若連接污水流量計的管道是（相對于被測介質(zhì)）絕緣性的則要用接地環(huán)，它的材質(zhì)應(yīng)根據(jù)被測介質(zhì)的腐蝕性選用。如果是聚四氟乙烯的傳感器，為了保護(hù)聚四氟乙烯的翻邊不受損傷，要選用接地環(huán)。黑龍江豪華版壁掛式明渠流量計為使電磁流量計的傳感器小型化和改善信噪比而出現(xiàn)用非均勻磁場和低頻勵磁方式的電磁流量計。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江豪華版壁掛式明渠流量計,流量計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332521343955078/7020765.png"></div><p style="text-indent:25px">超聲流量計是通過檢測流體流動對超聲束(或超聲脈沖)的作用以測量流量的儀表。超聲流量計主要由安裝在測量管道上的超聲換能器(或由換能器和測量管組成的超聲流量傳感器)和轉(zhuǎn)換器組成。超聲流量計和電磁流量計一樣，因儀表流通通道未設(shè)置任何阻礙件，均屬無阻礙流量計，是適于解決流量測量困難問題的一類流量計，特別在大口徑流量測量方面有較突出的優(yōu)點，它是發(fā)展迅速的一類流量計之一。根據(jù)對信號檢測的原理，超聲流量計可分為傳播速度差法(直接時差法、時差法、相位差法和頻差法)、波束偏移法、多普勒法、互相關(guān)法、空間濾法及噪聲法等。</p><p> 1、流量計的選用原則: </p> <p> 流量計的選用主要參考流量范圍（L/h）、溫度（℃）、壓力（MPa）、口徑（mm）、黏度（mPa·s）、計量精度、腐蝕性、周圍工作環(huán)境、計算器形式等。 </p> <p> 2、流量計的安裝: </p> <p> 任何類型的流量計都有一定的安裝要求，只有正確安裝才能使流量計正常、準(zhǔn)確地運行。流量計的安裝應(yīng)按產(chǎn)品使用說明書的要求，結(jié)合安裝現(xiàn)場的實際情況，以zui合適的方式進(jìn)行。 </p> <p> 3、流量計的使用與維護(hù): </p> <p> 只有當(dāng)流量計正確使用并及時的維護(hù)時，流量計才能以規(guī)定的精度運行。 </p> <p> （1）使用流量計時應(yīng)按照規(guī)定的流量范圍、工作壓力和工作溫度，不得隨意超出范圍以確保測量精度及使用壽命。 </p> <p> （2）對于運行中的流量計，應(yīng)按時巡檢，并記錄有關(guān)運行參數(shù)，如溫度、濕度、壓力、噪聲及有無滲漏等。 </p> <p> （3）長時間不用的流量計應(yīng)將殼內(nèi)殘留的流體泄放掉，根據(jù)需要涂防腐劑。 </p> <p> （4）對于一些國家特定的流量計量儀表，按規(guī)定按期強(qiáng)制標(biāo)定。應(yīng)用在石化行業(yè)的特殊環(huán)境中，需要堅固耐用的設(shè)計以及防爆認(rèn)證;用戶對直管設(shè)計的科氏流量計的需求等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江豪華版壁掛式明渠流量計,流量計" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520164541016/3121473.png"></div><p> 大部分結(jié)構(gòu)浮子流量計只能用于自下向上垂直流的管道安裝。浮子流量計可用于較低雷諾數(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> 浮子流量計應(yīng)用局限于中小管徑，普通全流型浮子流量計不能用于大管徑，玻璃管浮子流量計比較大口徑100mm，金屬管浮子流量計為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，要作流量示值修正。液體用浮子流量計通常以水標(biāo)定，氣體用空氣標(biāo)定，如實際使用流體密度、粘度與之不同，流量要偏離原分度值，要作換算修正。浮子流量計有較寬的流量范圍度，一般為10：1，低為5：1，高為25：1。流量檢測元件的輸出接近于線性。黑龍江豪華版壁掛式明渠流量計</p><p style="text-indent:25px">為了使電磁流量計的傳感小型化和改善信噪比，出現(xiàn)了用非均勻磁場和低頻勵磁方式的電磁流量計。黑龍江豪華版壁掛式明渠流量計</p><p> 感應(yīng)式電磁流量計在被測流體溫度過高或?qū)﹄姌O有強(qiáng)烈腐蝕作用等情況下，可采用感應(yīng)式電磁流量計。A、B為匝數(shù)相等的兩個交流激磁繞組，繞組之間是串聯(lián)的，但各自的電流方向相反。當(dāng)流體靜止時，通過感應(yīng)線圈C的合成磁通為零，故線圈中沒有感生的交變電動勢。流體流動時感應(yīng)線圈中就產(chǎn)生交變電動勢，其大小與流速成正比?；谶@一原理，還有很多改型方案。例如用一個激磁繞組，而在它的對稱的兩側(cè)各安置一方向相反的感應(yīng)線圈并串聯(lián)起來流體流動時，磁力線向流動方向移動，使兩邊感應(yīng)線圈中的產(chǎn)生電動勢不為零，由此可間接表示出流量的大小。電磁流量計的管道內(nèi)沒有其他部件，所以除用于測量導(dǎo)電流體的流量外，還可用于測量各種粘度的不導(dǎo)電液體（其中加入易電離物質(zhì)）的流量。在核能工業(yè)中經(jīng)常使用電磁流量計。黑龍江豪華版壁掛式明渠流量計</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2740987.html</p></div></div></div></div></div><div id="s2wipgc" class="page-right twoColRt"><div id="om7tari" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ngxefbs" 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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