渦街流量計(jì)推薦歡迎來(lái)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="電磁流量計(jì)（ElectromagneticFlowmeters，簡(jiǎn)稱EMF）是20世紀(jì)50~60年代隨著電子技術(shù)的發(fā)展而迅速發(fā)展起來(lái)的新型流量測(cè)量?jī)x表。電磁流量計(jì)是應(yīng)用電磁感應(yīng)原理，根據(jù)導(dǎo)電流體通過(guò)外加磁場(chǎng)時(shí)感生的電動(dòng)勢(shì)來(lái)測(cè)量導(dǎo)電流體流量的"><meta name="keywords" content="渦街流量計(jì)推薦,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 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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>渦街流量計(jì)推薦,流量計(jì)</p><p><span>***更新：</span>2020-08-19 01:19:24</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="thfvtx7" 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="zdrp7f9" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="7xbznh7" class="box"><p>電磁流量計(jì)（Electromagnetic Flowmeters，簡(jiǎn)稱EMF）是20世紀(jì)50~60年代隨著電子技術(shù)的發(fā)展而迅速發(fā)展起來(lái)的新型流量測(cè)量?jī)x表。電磁流量計(jì)是應(yīng)用電磁感應(yīng)原理，根據(jù)導(dǎo)電流體通過(guò)外加磁場(chǎng)時(shí)感生的電動(dòng)勢(shì)來(lái)測(cè)量導(dǎo)電流體流量的一種儀器。 <p> 電磁流量計(jì)的結(jié)構(gòu)主要由磁路系統(tǒng)、測(cè)量導(dǎo)管、電極、外殼、襯里和轉(zhuǎn)換器等部分組成。 </p> <p> 磁路系統(tǒng)：其作用是產(chǎn)生均勻的直流或交流磁場(chǎng)，渦街流量計(jì)推薦。直流磁路用永久磁鐵來(lái)實(shí)現(xiàn)，其優(yōu)點(diǎn)是結(jié)構(gòu)比較簡(jiǎn)單，受交流磁場(chǎng)的干擾較小，但它易使通過(guò)測(cè)量導(dǎo)管內(nèi)的電解質(zhì)液體極化，使正電極被負(fù)離子包圍，負(fù)電極被正離子包圍，渦街流量計(jì)推薦，即電極的極化現(xiàn)象，并導(dǎo)致兩電極之間內(nèi)阻增大，因而嚴(yán)重影響儀表正常工作。當(dāng)管道直徑較大時(shí)，永久磁鐵相應(yīng)也很大，笨重且不經(jīng)濟(jì)，所以電磁流量計(jì)一般采用交變磁場(chǎng)，渦街流量計(jì)推薦，且是50HZ工頻電源激勵(lì)產(chǎn)生的。 </p> <p> 測(cè)量導(dǎo)管：其作用是讓被測(cè)導(dǎo)電性液體通過(guò)。為了使磁力線通過(guò)測(cè)量導(dǎo)管時(shí)磁通量被分流或短路，測(cè)量導(dǎo)管必須采用不導(dǎo)磁、低導(dǎo)電率、低導(dǎo)熱率和具有一定機(jī)械強(qiáng)度的材料制成，可選用不導(dǎo)磁的不銹鋼、玻璃鋼、**度塑料、鋁等。浮子流量計(jì)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(cè)元件的輸出接近于線性。渦街流量計(jì)推薦</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="渦街流量計(jì)推薦,流量計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520922431641/5725344.png"></div><p> 智能型電磁流量計(jì)傳感器在工藝管道上的安裝：1.智能型電磁流量計(jì)測(cè)堵管在任何時(shí)刻必須完全注滿介質(zhì)，不能在不滿管或空管的情況下正常工作。在介質(zhì)不滿管時(shí)，可采用抬高流量計(jì)后端出水管高度的方法使介質(zhì)滿管，避免不滿管及氣體附著在電極上。2.管道內(nèi)有真空會(huì)損壞流量計(jì)的內(nèi)襯，需特別注意。3.流動(dòng)的正方向應(yīng)與流量計(jì)上箭頭所指的正方向一致。4.智能型電磁流量計(jì)即可在直管道上安裝，也可以在水平或傾斜管道上安裝，但要求二電極的中心連線處于水平狀態(tài)。5.對(duì)于液、固兩相流體，zui好采用垂直安裝，使被測(cè)介質(zhì)自上而xialiu動(dòng)，可使流量計(jì)襯里磨損均勻，延長(zhǎng)使用壽命。6.流量計(jì)在管道法蘭附近確保有足夠的空間，以便安裝和維護(hù)。7.若測(cè)量管道有振動(dòng)，在流量計(jì)的兩側(cè)應(yīng)有固定的支座。8.測(cè)量介質(zhì)為重污染液體的，在旁路管道安裝流量計(jì)本體，不中斷工藝運(yùn)行，即可排空與清流。9.安裝聚四氟乙烯內(nèi)襯的流量計(jì)時(shí)，連接法蘭的螺栓應(yīng)注意均勻擰緊，否則容易壓壞聚四氟乙烯內(nèi)襯，zui好用力矩扳手。寧夏插入式渦旋流量計(jì)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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="渦街流量計(jì)推薦,流量計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520715556641/6274057.png"></div><p> 方面的考慮因素如下： </p> <p> 1．儀表性能方面：精確度、重復(fù)性、線性度、范圍度、壓力損失、上下限流量、信號(hào)輸出特性、響應(yīng)時(shí)間等； </p> <p> 2．流體特性方面：流體壓力、溫度、密度、粘度、潤(rùn)滑性、化學(xué)性質(zhì)、磨損、腐蝕、結(jié)垢、臟污、氣體壓縮系數(shù)、等熵指數(shù)、比熱容、電導(dǎo)率、聲速、混相流、脈動(dòng)流等； </p> <p> 3．環(huán)境條件方面：環(huán)境溫度、濕度、安全性、電磁干擾等；浮子流量計(jì) </p> <p> 4．經(jīng)濟(jì)因素方面：購(gòu)置費(fèi)、安裝費(fèi)、維修費(fèi)、校驗(yàn)費(fèi)、使用壽命、運(yùn)行費(fèi)（能耗）、備品備件等。 </p> <p> <br /> </p><p style="text-indent:25px">超聲流量計(jì)是通過(guò)檢測(cè)流體流動(dòng)對(duì)超聲束(或超聲脈沖)的作用以測(cè)量流量的儀表。超聲流量計(jì)主要由安裝在測(cè)量管道上的超聲換能器(或由換能器和測(cè)量管組成的超聲流量傳感器)和轉(zhuǎn)換器組成。超聲流量計(jì)和電磁流量計(jì)一樣，因儀表流通通道未設(shè)置任何阻礙件，均屬無(wú)阻礙流量計(jì)，是適于解決流量測(cè)量困難問(wèn)題的一類流量計(jì)，特別在大口徑流量測(cè)量方面有較突出的優(yōu)點(diǎn)，它是發(fā)展迅速的一類流量計(jì)之一。根據(jù)對(duì)信號(hào)檢測(cè)的原理，超聲流量計(jì)可分為傳播速度差法(直接時(shí)差法、時(shí)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。為了使電磁流量計(jì)的傳感小型化和改善信噪比，出現(xiàn)了用非均勻磁場(chǎng)和低頻勵(lì)磁方式的電磁流量計(jì)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="渦街流量計(jì)推薦,流量計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332520833798828/4923668.png"></div><p> 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。只是我國(guó)浮子流量計(jì)行業(yè)標(biāo)準(zhǔn)等規(guī)定流量上限Qmax必須符合（1，，，4或6）×10nL/h的要求（n為正負(fù)整數(shù)或零），為液體（以水為表示）設(shè)計(jì)的儀表用于氣體（以空氣為表示）時(shí)，不符合上述要求，只能為氣體另行設(shè)計(jì)浮子和錐管，就分成液體和氣體兩種系列。國(guó)外有些制造廠同一儀表并列液、氣兩種流體的流量范圍，當(dāng)然流量值就不可能都是圓整值；國(guó)內(nèi)有些型號(hào)儀表也采用本辦法。但是液體用和氣體用設(shè)計(jì)還是有區(qū)別的，例如氣體儀表浮子設(shè)計(jì)得較輕，防浮子振蕩跳動(dòng)的阻尼件結(jié)構(gòu)各異等。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，例如增加帶散熱片的液體阻尼件，以減少浮子跳動(dòng)；與指示轉(zhuǎn)換部分連接處隔以散熱片。有些透明管浮子流量計(jì)以就地指示為主，裝有接近開(kāi)關(guān)，作流量上下限報(bào)警信號(hào)輸出。衛(wèi)生型渦旋流量計(jì)選擇</p><p style="text-indent:25px">流量測(cè)量的發(fā)展可追溯到古代的水利工程和城市供水系統(tǒng)。渦街流量計(jì)推薦</p><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(guò)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(guò)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。渦街流量計(jì)推薦</p><p style="text-indent:25px">西安倫騫電器設(shè)備有限責(zé)任公司注冊(cè)資金30-50萬(wàn)元，是一家擁有5~10人***員工的企業(yè)。西安倫騫電器致力于為客戶提供質(zhì)量的[ "雷達(dá)料位計(jì)", "雷達(dá)物位計(jì)", "壓力變送器", "溫度變送器" ]，一切以用戶需求為中心,深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠(chéng)信為本的理念，打造儀器儀表質(zhì)量品牌。公司憑借深厚技術(shù)支持，年?duì)I業(yè)額度達(dá)到50-100萬(wàn)元，并與多家行業(yè)**公司建立了緊密的合作關(guān)系。</p></p><br /><p>文章來(lái)源地址: 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