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08:13:35</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="jgwxsh4" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">南儀測控技術(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="3is7job" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ghbxmrp" class="box"><p><p style="text-indent:25px">電磁流量計測量氯堿的可行性分析報告：電磁流量計測量導(dǎo)電液體流量是非常有優(yōu)勢的，那么氯堿行業(yè)是否也可以使用電磁流量計來進(jìn)行流量測量呢？氯堿行業(yè)主要計量鹽水和燒堿，兩者具有共同的特性：1、鹽水的成分較復(fù)雜，有時呈酸性，有時呈堿性，并可能由于離子膜脫氯不凈，南京投入式流量計訂購，而含有游離氯，兩者都具有較強(qiáng)的腐蝕性。2，南京投入式流量計訂購、兩者都是導(dǎo)電介質(zhì)。3、當(dāng)氣溫較低時，鹽水管道都會出現(xiàn)結(jié)鹽現(xiàn)象，隔閡燒堿也會在保送過程中隨著溫度降低而析出鹽；離子膜燒堿32％在3~C左右就會結(jié)晶；在管道長并間歇保送時，也會出現(xiàn)32％燒堿結(jié)晶而使管道梗塞，所以兩種被測介質(zhì)都會呈現(xiàn)含有固體顆?，F(xiàn)象。4、兩種介質(zhì)的溫度都在100oC以較。分析被測介質(zhì)的特性及電磁流量計的優(yōu)點(diǎn)，可以看出電磁流量計在氯堿計量方面十分適用。雖然電磁流量計的價錢較貴，但其精度高，維護(hù)量小，使用壽命長，有較高的性價比，南京投入式流量計訂購。差壓式流量計、渦輪流量計、橢圓齒輪流量計等都受流動體工作狀態(tài)以及流動體密度、粘度等參數(shù)的影響而使測量誤差增較大。由于測量元件受固體顆粒的磨損而使壽命降低，甚至堵塞無法使用，腐蝕性更無法解決。含固體顆粒流體――楔形流量計、電磁流量計、科氏力流量計。南京投入式流量計訂購</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京投入式流量計訂購,流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142327474870/5073743.png"></div><p style="text-indent:25px">電磁流量計被擊穿的原因分析及應(yīng)對方案：在電磁流量計的應(yīng)用上，有些用戶會遇到電磁流量計轉(zhuǎn)換器電路板被燒壞的情況，尤其在夏季多雷雨的天氣，此種情況出現(xiàn)更為頻繁，結(jié)合大部分現(xiàn)場情況判斷，損壞部分為勵磁電路的電源部分，結(jié)合損壞情況判斷，是由于過壓造成勵磁電源保護(hù)穩(wěn)壓管擊穿，續(xù)電情況下進(jìn)一步造成損壞器件過流產(chǎn)生高溫，促使PCB板極高溫碳化，加劇損壞情況.通常現(xiàn)場產(chǎn)生過壓的原因有兩種情況：1、現(xiàn)場工況電源電壓不穩(wěn)，易產(chǎn)生浪涌電壓.若是建議安裝電源穩(wěn)壓器；2、雷雨季節(jié)的雷擊直接作用于電磁流量計，雷擊途徑多樣復(fù)雜，可通過一切與外部接觸的途徑，如輸入部分的電源；輸出部分的電流，頻率，通訊；流體管道傳感器的勵磁及電極.南京投入式流量計訂購氯丁橡膠的耐磨性比較好，耐一般低濃度的酸堿。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京投入式流量計訂購,流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637400142264749444/6461272.png"></div><p style="text-indent:25px">電磁流量計在造紙企業(yè)中的應(yīng)用：隨著流量儀表測量技術(shù)的飛速發(fā)展，各類智能型的流量計在許多工業(yè)生產(chǎn)領(lǐng)域發(fā)揮了重要的作用。近年來，國內(nèi)的電磁流量計的制造技術(shù)也在不斷進(jìn)步，電磁流量計產(chǎn)品在較大中型投產(chǎn)項(xiàng)目中的比例也有所增加。造紙行業(yè)對于流量計的需求量是特別巨較大的，國內(nèi)的較大中型造紙企業(yè)也已逐步地開始完成了電磁流量計替代傳統(tǒng)的差壓流量儀表的過程，目前國家35萬噸規(guī)模的造紙廠，電磁流量計使用已達(dá)到400臺左右。造紙行業(yè)是產(chǎn)生廢水污染的主要行業(yè)之一，在造紙整修工藝流動程中，除主流動程外，隨著環(huán)保要求愈加嚴(yán)格，多數(shù)造紙企業(yè)都同時建設(shè)了廢液處理工藝。調(diào)查發(fā)現(xiàn)電磁流量計在造紙廠中幾乎所有的工段都有使用。</p><p style="text-indent:25px">電磁流量計有以下特點(diǎn)：1、采用SMD器件和表面貼裝（SMT）技術(shù)，電路可靠性高。2、管道內(nèi)無可動部件，無阻流部件，測量中幾乎沒有附加壓力損失。3、在現(xiàn)場可根據(jù)用戶實(shí)際需要在線修改量程。4、測量結(jié)果與流速分布，流體壓力，溫度、密度、粘度等物理參數(shù)無關(guān)。5、高清晰度背光LCD顯示，全中文菜單操作，使用方便，操作簡單，易學(xué)易懂。6、具有RS485、RS232、Hart和Modbus等數(shù)字通訊信號輸出。（選配）7、具有自檢與自論斷功能。8、小時總量計錄功能，以小時為單位記錄流量總量，適用于分時計量制（選配）9、內(nèi)部具有三個積算器可分別顯示正向累計量反向累計量及差值積算量，內(nèi)部設(shè)有不掉電始終，可記錄16次掉電時間。（選配）10、紅外手持操作器，115KHZ通訊速率，遠(yuǎn)距離非接觸操作轉(zhuǎn)換器所有功能（選配）如果環(huán)境不去改變計量永遠(yuǎn)會不準(zhǔn)確的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京投入式流量計訂購,流量計" src="https://tyunfile.71360.com/UploadFile/nanyishiye/637402711037769862/4139399.png"></div><p style="text-indent:25px">電磁流量計的傳感器檢查方法與維護(hù)技巧：電磁流量計作為一種在流量測量范圍內(nèi)使用為普遍的儀表，被許多的工業(yè)企業(yè)所喜愛。需要準(zhǔn)備的測試設(shè)備：萬用表一只、500MΩ絕緣電阻測試儀一臺。測試檢查步驟：（1）在管道充滿介質(zhì)的情況較，用萬用表測量接線端子A、B與C之間的電阻值，A-C、B-C之間的阻值應(yīng)較大至相等。若差異在1倍以上，可能是電極出現(xiàn)滲漏、測量管外壁或接線盒內(nèi)有冷凝水吸附。（2）在襯里干燥情況較，用MΩ表測A-C、B-C之間的絕緣電阻（應(yīng)較大于200MΩ）。再用萬用表測量端子A、B與測量管內(nèi)二只電極的電阻（應(yīng)呈短路連通狀態(tài)）。若絕緣電阻很小，說明電極滲漏，應(yīng)將整套流量計返廠維修。若絕緣有所較降但仍有50MΩ以上且步驟（1）的檢查結(jié)果正常，則可能是測量管外壁受潮，可用熱風(fēng)機(jī)對外殼內(nèi)部進(jìn)行烘干。流量上限值：流量計能按規(guī)定精確度測量的大流量。南京投入式流量計訂購</p><p style="text-indent:25px">腐蝕性流體――電磁流量計、金屬管轉(zhuǎn)子流量計、科氏力流量計。南京投入式流量計訂購</p><p style="text-indent:25px">測量蒸汽流量產(chǎn)生得問題及其解決：V型錐流量計在使用中，確實(shí)克服和解決了傳統(tǒng)差壓儀表諸多得缺點(diǎn)和不足，得到了廣較大用戶得好評。但是也出現(xiàn)了某些問題，普遍得問題是在測量蒸汽流量上。在間歇用汽得工況較管道停汽期間，有時儀表總有較大小不等得虛假流量顯示，檢查V型錐流量計也確實(shí)有差壓存在。即使安裝規(guī)范合理、零點(diǎn)調(diào)整正常，此問題仍然存在。特別是測量濕飽和蒸汽時，這種問題更是突出。只能通過增加小信號切除值來解決，但是常常導(dǎo)致正常流量被切掉。在V錐流量計針對V錐尾部取壓導(dǎo)致測量蒸汽虛假流量得問題上，對其結(jié)構(gòu)進(jìn)行了改進(jìn)，將負(fù)壓端測量口改到管壁上，并將這種方式稱為“管壁取壓”。南京投入式流量計訂購</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3064237.html</p></div></div></div></div></div><div id="8pag2jy" class="page-right twoColRt"><div id="sazp3fk" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="f78yidn" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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