溫州渦街流量計(jì)哪家好推薦咨詢南儀測(cè)控技術(shù)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)磁場(chǎng)邊緣效應(yīng)對(duì)測(cè)量有什么影響：電磁流量計(jì)轉(zhuǎn)換器所輸入的阻抗在提高測(cè)量導(dǎo)電性液體時(shí)，一般是不會(huì)因?yàn)榻橘|(zhì)電導(dǎo)率稍有變化就會(huì)引起誤差，但是對(duì)于一定的轉(zhuǎn)換器所輸入阻抗，溫州渦街流量計(jì)哪家好，被測(cè)量介質(zhì)的電導(dǎo)率是有一個(gè)下限值，是不能低于該下"><meta name="keywords" content="溫州渦街流量計(jì)哪家好,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="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">南儀測(cè)控技術(shù)(上海)有限公司</a></p><p><span>聯(lián)系人：</span>桂經(jīng)理</p><p><span>郵箱: </span>704766500@qq.com</p><p><span>電話: </span>17802114401</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>https://www.nanicontrol.com</p><p><span>手機(jī): </span>021-61559357</p><p><span>地址: </span>滬閔路1871號(hào)9甲幢4樓407室</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="c3mtkbi" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="n8wyfmd" class="box"><p><p style="text-indent:25px">電磁流量計(jì)磁場(chǎng)邊緣效應(yīng)對(duì)測(cè)量有什么影響：電磁流量計(jì)轉(zhuǎn)換器所輸入的阻抗在提高測(cè)量導(dǎo)電性液體時(shí)，一般是不會(huì)因?yàn)榻橘|(zhì)電導(dǎo)率稍有變化就會(huì)引起誤差，但是對(duì)于一定的轉(zhuǎn)換器所輸入阻抗，溫州渦街流量計(jì)哪家好，被測(cè)量介質(zhì)的電導(dǎo)率是有一個(gè)下限值，是不能低于該下限值的。被測(cè)介質(zhì)電導(dǎo)率太大也是不可以的，所以對(duì)一個(gè)電磁流量計(jì)來(lái)說(shuō)，其測(cè)量不受到介質(zhì)電導(dǎo)率影響是有一定的范圍，被測(cè)介質(zhì)的電導(dǎo)率既不能太大，也不能太小。如果電磁流量計(jì)測(cè)量介質(zhì)的電導(dǎo)率偏高的話，磁場(chǎng)邊緣區(qū)就會(huì)產(chǎn)生有很大的渦電流，會(huì)引起二次磁通，會(huì)使工作磁場(chǎng)邊緣區(qū)兩側(cè)的磁場(chǎng)分別會(huì)被消弱與增強(qiáng)。所以在電磁流量計(jì)測(cè)量電導(dǎo)率介質(zhì)是不能使用交流勵(lì)磁，而使用直流激磁，溫州渦街流量計(jì)哪家好，在隨著電子技術(shù)持續(xù)發(fā)展，流量轉(zhuǎn)換器輸入阻抗的提高，是必可以降低被測(cè)介質(zhì)電導(dǎo)率的下限，溫州渦街流量計(jì)哪家好。流量計(jì)電極材質(zhì)與被測(cè)介質(zhì)配置不當(dāng)，將會(huì)有化學(xué)作用或是極化現(xiàn)象而影響到正常的測(cè)量，要根據(jù)被測(cè)介質(zhì)的腐蝕性來(lái)選擇電極的材料?？梢愿鶕?jù)被測(cè)介質(zhì)的腐蝕性、磨損性與溫度選擇電磁流量計(jì)內(nèi)襯材質(zhì)，盡量選用有防雷功能的電磁流量計(jì)。只要液體是有一定的導(dǎo)電率，就可以選擇電磁流量計(jì)作為測(cè)量的工具。溫州渦街流量計(jì)哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="溫州渦街流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142264749444/6461272.png"></div><p style="text-indent:25px">電磁流量計(jì)使用中的常見(jiàn)故障，有的是由于儀表本身元器件損壞引起的故障，有的是由于選用不當(dāng)、安裝不妥、環(huán)境條件、流動(dòng)體特性等因素造成的故障，如顯示波動(dòng)、精度較降甚至儀表?yè)p壞等。它一般可以分為兩種類型：安裝調(diào)試時(shí)出現(xiàn)的故障（調(diào)試期故障）和正常運(yùn)行時(shí)出現(xiàn)的故障（運(yùn)行期故障）。1、調(diào)試期故障：調(diào)試期待故障一般出現(xiàn)在儀表安裝調(diào)試階段，一經(jīng)排除，在以后相同條件較不會(huì)再出現(xiàn)。常見(jiàn)的調(diào)試期故障通常由安裝不妥、環(huán)境干擾以及流動(dòng)體特性影響等原因引起。2、運(yùn)行期故障：運(yùn)行期故障是電磁流量計(jì)經(jīng)調(diào)試并正常運(yùn)行一段時(shí)期后出現(xiàn)的故障，常見(jiàn)的運(yùn)行期故障一般由流量傳感器內(nèi)壁附著層、雷電打擊以及環(huán)境條件變化等因素引起。無(wú)錫音叉式流量計(jì)哪家實(shí)惠電磁流量計(jì)如果是供電24V就要在工業(yè)現(xiàn)場(chǎng)不允許使用交流電。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="溫州渦街流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142327474870/5073743.png"></div><p style="text-indent:25px">正確安裝在孔板流量計(jì)的要求？充滿管道的流動(dòng)體，當(dāng)它們流動(dòng)經(jīng)管道內(nèi)的節(jié)流動(dòng)裝置時(shí)，流動(dòng)束將在節(jié)流動(dòng)裝置的節(jié)流動(dòng)件處形成局部收縮，從而使流動(dòng)速增加，靜壓力低，于是在節(jié)流動(dòng)件前后便產(chǎn)生了壓力降，即壓差，介質(zhì)流動(dòng)動(dòng)的流量越較大，在節(jié)流動(dòng)件前后產(chǎn)生的壓差就越較大，所以孔板流量計(jì)可以通過(guò)測(cè)量壓差來(lái)衡量流動(dòng)體流量的較大小。為保證流動(dòng)體的流動(dòng)動(dòng)在節(jié)流動(dòng)件前1D出形成充分發(fā)展的紊流動(dòng)速度分布，而且使這種分布成均勻的軸對(duì)稱形，直管段必須是圓的，而且對(duì)節(jié)流動(dòng)件前2D范圍，其圓度要求其甚為嚴(yán)格，并且有一定的圓度指標(biāo)。節(jié)流動(dòng)件上游側(cè)為敞開(kāi)空間或直徑≥2D較大容器時(shí)，則敞開(kāi)空間或較大容器與節(jié)流動(dòng)件之間的直管長(zhǎng)不得小于30D(15D)。若節(jié)流動(dòng)件和敞開(kāi)空間或較大容器之間尚有其它局部阻力件時(shí)，則除在節(jié)流動(dòng)件與局部阻力件之間設(shè)有附合規(guī)定的小直管段長(zhǎng)1外，從敞開(kāi)空間到節(jié)流動(dòng)件之間的直管段總長(zhǎng)也不得小于30D(15D)。</p><p style="text-indent:25px">電磁流量計(jì)自然干擾源主要是來(lái)源于較大氣層的電噪聲、地球外層空間的宇宙噪聲，它既是地球電磁流量計(jì)環(huán)境上基本要求組成的，同時(shí)又是對(duì)無(wú)線電通訊與空間技術(shù)造成干擾的干擾源。電磁流量計(jì)自然噪聲會(huì)對(duì)人造衛(wèi)星與宇宙飛船所運(yùn)行產(chǎn)生干擾，也會(huì)對(duì)彈道導(dǎo)彈運(yùn)載火箭的發(fā)射產(chǎn)生干擾。人為干擾源是有機(jī)電或是其他人工裝置而產(chǎn)生電磁流量計(jì)能量的干擾，其中一部分是專門用來(lái)發(fā)射電磁能量的裝置，列如有廣播、電視、通信與導(dǎo)航等無(wú)線電設(shè)備，就稱為有意發(fā)射干擾源。還有一部分是在完成自身功能的同時(shí)附帶所產(chǎn)生的電磁能量的發(fā)射，列如是在交通車輛、照明器具、電動(dòng)機(jī)械以及工業(yè)、醫(yī)用射頻設(shè)備，這些是稱為無(wú)意發(fā)射干擾源。電磁流量計(jì)測(cè)量中，電解質(zhì)流體對(duì)金屬電極的電化學(xué)反應(yīng)會(huì)產(chǎn)生直流極化電壓。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="溫州渦街流量計(jì)哪家好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637402711026734705/3791399.png"></div><p style="text-indent:25px">一體化孔板流量計(jì)如何正確使用：科信儀表較面就為較大家進(jìn)行詳細(xì)說(shuō)明：1.導(dǎo)壓管系統(tǒng)注滿冷水作導(dǎo)壓介質(zhì)，測(cè)量高溫蒸汽一般通過(guò)冷水導(dǎo)壓。在管線沒(méi)輸送蒸汽的情況較，打開(kāi)一次閥，壓力閥和平衡閥，關(guān)閉排污閥，直接從冷凝罐注水孔注入冷水，直至全注滿為止。當(dāng)然也可以關(guān)閉平衡閥和壓力閥，打開(kāi)一次閥引進(jìn)高溫蒸汽慢慢冷卻成水。這種方法由于蒸汽溫度太高，容易損壞儀表，一般不采用。特別要注意測(cè)量高溫蒸汽時(shí)導(dǎo)壓管沒(méi)注滿水或溫度很高嚴(yán)禁投入運(yùn)行。測(cè)量壓縮空氣、冷水直接采用被介質(zhì)導(dǎo)壓。2.差壓變送器排氣或排液，導(dǎo)壓管注滿水后，在差壓變送器的壓容室內(nèi)有時(shí)要聚集少量氣體影響導(dǎo)壓，必須進(jìn)行排除。擰開(kāi)正、負(fù)壓容室較部的螺栓排液。一般新投入運(yùn)行的儀表不用排液。檢查導(dǎo)壓管線系統(tǒng)無(wú)任何泄露，關(guān)閉所有閥門，準(zhǔn)備投入運(yùn)行。漿料流體――楔形流量計(jì)、多普勒超聲波流量計(jì)。加油站流量計(jì)哪家口碑好</p><p style="text-indent:25px">流量計(jì)橡膠襯里具有較好的彈性和耐磨性，耐沖擊。溫州渦街流量計(jì)哪家好</p><p style="text-indent:25px">電磁流量計(jì)其他安裝注意事項(xiàng)：(1)直管段長(zhǎng)度要求：為獲得正常測(cè)量精確度，電磁流量傳感器上游也要有一定長(zhǎng)度直管段，但其長(zhǎng)度與大部分其它流量?jī)x表相比要求較低。90o彎頭、T形管、同心異徑管、全開(kāi)閘閥后通常認(rèn)為只要離電極中心線(不是傳感器進(jìn)口端連接面)5倍直徑(5D)長(zhǎng)度的直管段，不同開(kāi)度的閥則需10D；下游直管段為(2～3)D。(2)負(fù)壓管系的安裝：氟塑料襯里傳感器須謹(jǐn)慎地應(yīng)用于負(fù)壓管系；正壓管系應(yīng)防止產(chǎn)生負(fù)壓，例如液體溫度高于室溫的管系，關(guān)閉傳感器上下游截止閥停止運(yùn)行后，流體冷卻收縮會(huì)形成負(fù)壓，應(yīng)在傳感器附近裝負(fù)壓防止閥。溫州渦街流量計(jì)哪家好</p><p style="text-indent:25px">南儀測(cè)控技術(shù)(上海)有限公司位于滬閔路1871號(hào)9甲幢4樓407室。公司業(yè)務(wù)分為壓力變送器，溫度傳感器，液位計(jì)，流量計(jì)等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司從事五金、工具多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。南儀測(cè)控技術(shù)秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營(yíng)理念，全力打造公司的重點(diǎn)競(jìng)爭(zhēng)力。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2719801.html</p></div></div></div></div></div><div id="tikmtkr" class="page-right twoColRt"><div id="b23bp7l" 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