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href="http://www.cdcfah.com/cp/second-yiqiyibiao_wybez/">物位儀表</a>?<a href="http://www.cdcfah.com/cp/third-wybez_yyb/">液位儀表</a>?揚(yáng)州熱式氣體質(zhì)量流量計廠家誠信為本江蘇中徽測控儀表供應(yīng)</p><div id="lf7jkx4" class="leftbox clearfix"><h1>揚(yáng)州熱式氣體質(zhì)量流量計廠家誠信為本江蘇中徽測控儀表供應(yīng)</h1><div id="g7fv7xz" class="proBig"><div id="ycurgcr" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436289134746609/1367639.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7bdvcen" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436289134746609/1367639.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rq7mjqp" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>揚(yáng)州熱式氣體質(zhì)量流量計廠家,流量計</p><p><span>***更新：</span>2021-01-07 08:07:39</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="q2kmj7p" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇中徽測控儀表有限公司</a></p><p><span>聯(lián)系人：</span>姜經(jīng)理</p><p><span>郵箱: </span>jszhck@163.com</p><p><span>電話: </span>13770424300</p><p><span>傳真: </span>0517_86903470</p><p><span>網(wǎng)址: </span>http://www.jszhckyb.com</p><p><span>手機(jī): </span>0517-86900078</p><p><span>地址: </span>江蘇省淮安市金湖縣工業(yè)集中區(qū)A區(qū)3號</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="dmz7kmm" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="mqsu7gn" class="box"><p><p style="text-indent:25px">孔板流量計優(yōu)點：標(biāo)準(zhǔn)節(jié)流件是全世界通用的，并得到了國際標(biāo)準(zhǔn)組織的認(rèn)可，無需實流校準(zhǔn)，即可投用，在流量計中亦是的。結(jié)構(gòu)易于復(fù)制，簡單、牢固、性能穩(wěn)定可靠、價格低廉；應(yīng)用范圍廣，包括全部單相流體（液、氣、蒸汽）、部分混相流，一般生產(chǎn)過程的管徑、工作狀態(tài)(溫度、壓力)皆有產(chǎn)品。檢測件和差壓顯示儀表可分開不同廠家生產(chǎn)，便與專業(yè)化規(guī)模生產(chǎn)；缺點：測量的重復(fù)性、精確度在流量計中屬于中等水平，由于眾多因素的影響錯綜復(fù)雜，揚(yáng)州熱式氣體質(zhì)量流量計廠家，精確度難于提高。范圍度窄，由于流量系數(shù)與雷諾數(shù)有關(guān),一般范圍度*3∶1～4∶1。有較長的直管段長度要求，揚(yáng)州熱式氣體質(zhì)量流量計廠家，一般難于滿足。尤其對較大管徑，問題更加突出；壓力損失大；通常為維持一臺孔板流量計正常運(yùn)行，水泵需要附加動力克服孔板的壓力損失，揚(yáng)州熱式氣體質(zhì)量流量計廠家。電磁流量計的安裝與調(diào)試比其它流量計復(fù)雜，且要求更嚴(yán)格。揚(yáng)州熱式氣體質(zhì)量流量計廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚(yáng)州熱式氣體質(zhì)量流量計廠家,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289134746609/1367639.png"></div><p> 售價較高同種規(guī)格的V錐流量計的價格要高于孔板流量計,但低于可更換孔板流量計。由于V錐的用料多、加工工藝復(fù)雜、標(biāo)定費(fèi)用高,使得其售價較高。但是在考慮流量計時,初次購買價及安裝費(fèi)用、儀表的可靠性、長期維護(hù)費(fèi)用、長久壓力損失等綜合因素的總評才是選取流量計的依據(jù),只有綜合考慮并權(quán)衡了以上這些重要因素,才能做到合理選型。如前所述,V錐流量計除了在初次購買費(fèi)用上高于孔板流量計外,其他的費(fèi)用應(yīng)該與孔板流量計持平或低于孔板流量計。尤其是在補(bǔ)償壓力損失所需要的耗能方面,V錐流量計遠(yuǎn)遠(yuǎn)優(yōu)于孔板流量計。所以從長遠(yuǎn)考慮,使用V錐流量計的綜合費(fèi)用要低于孔板流量計。使用可更換孔板的目的就是為了提高孔板的量程比。但是其價格昂貴。如果給V錐流量計配兩臺不同量程的變送器（壓力變送器、差壓變送器）,那么其量程比的擴(kuò)展要遠(yuǎn)大于可更換孔板流量計,而其價格要遠(yuǎn)低于可更換孔板。3差壓較低由于V錐流量計的流出系數(shù)要大于孔板流量計的流出系數(shù),使得相同流量時孔板的差壓值要高于V錐的差壓值。孔板流量計的變送器一般都是用中差壓表,V錐流量計一般用低差壓表。 </p> <p> <br /> </p> <p> <br /> 揚(yáng)州熱式氣體質(zhì)量流量計廠家標(biāo)準(zhǔn)孔板按常用取壓方式可分為角接取壓、法蘭取壓、徑距取壓三種類型。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚(yáng)州熱式氣體質(zhì)量流量計廠家,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436288983535731/8125157.png"></div><p style="text-indent:25px">需要標(biāo)定孔板是通過保證幾何尺寸就可以保證其測量精度的流量計。而V錐屬于新型的流量計,雖然眾多的廠家及科研人員做了大量的實驗,但迄今為止V錐流量計可依據(jù)的國家標(biāo)準(zhǔn)有限,而且由于機(jī)密性和**的限制,現(xiàn)已公布的有關(guān)V錐流量計結(jié)構(gòu)設(shè)計的可利用的文獻(xiàn)較為缺乏。各個生產(chǎn)廠商依據(jù)企標(biāo)來生產(chǎn),可以說產(chǎn)品魚龍混雜,并不是每個廠商的產(chǎn)品都可靠。由于試驗數(shù)據(jù)不充分,使得每臺V錐流量計出廠時都必須經(jīng)過嚴(yán)格的標(biāo)定。從而也增加其費(fèi)用。精度高由于V錐結(jié)構(gòu)無可動部件,使得V錐具有很好的重復(fù)性,一般小于0.1%。由于量程比寬,即它的線性度好,從而使其精度較高。根據(jù)GB17167-2006《用能單位能源計量器具配備和管理通則》規(guī)定,用于能源計量的流量計準(zhǔn)確度等級要求為:煤氣和天然氣為2.0級。所以在測試分離器出口的氣體測量中,在10∶1的量程范圍內(nèi),V錐加上差壓變送器及二次表的總體誤差不會低于1.5級,完全能滿足計量要求。長期性能好由于錐體的輪廓形狀限制了介質(zhì)的流動,流體沿著錐體形成了邊界層,這意味著錐體的邊緣不容易受不清潔的流體磨損,從而使開孔比β保持不變,使得流量計可以在很長時間內(nèi)保持精度而不必校驗。</p><p style="text-indent:25px">充滿管道的流體，當(dāng)它們流經(jīng)管道內(nèi)的節(jié)流裝置時，流束將在節(jié)流裝置的節(jié)流件處形成局部收縮，從而使流速增加，靜壓力低，于是在節(jié)流件前后便產(chǎn)生了壓力降，即壓差，介質(zhì)流動的流量越大，在節(jié)流件前后產(chǎn)生的壓差就越大，所以孔板流量計可以通過測量壓差來衡量流體流量的大小。這種測量方法是以能量守衡定律和流動連續(xù)性定律為基準(zhǔn)的。智能節(jié)流裝置（孔板流量計）是集流量、溫度、壓力檢測功能于一體，并能進(jìn)行溫度、壓力自動補(bǔ)償?shù)男乱淮髁坑嫞摽装辶髁坑嫴捎孟冗M(jìn)的微機(jī)技術(shù)與微功耗新技術(shù)，功能強(qiáng)，結(jié)構(gòu)緊湊，操作簡單，使用方便?！装辶髁坑嫻?jié)流裝置結(jié)構(gòu)易于復(fù)制，簡單、牢固，性能穩(wěn)定可靠，使用期限長，價格低廉?！装逵嬎悴捎脟H標(biāo)準(zhǔn)與加工▲孔板流量計應(yīng)用范圍廣，全部單相流皆可測量，部分混相流亦可應(yīng)用。▲標(biāo)準(zhǔn)型節(jié)流裝置無須實流校準(zhǔn)，即可投用。▲一體型孔板流量計安裝更簡單，無須引壓管，可直接接差壓變送器和壓力變送器。間接式質(zhì)量流量計是用密度計與容積流量直接相乘求得質(zhì)量流量的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚(yáng)州熱式氣體質(zhì)量流量計廠家,流量計" src="https://tyunfile.71360.com/UploadFile/jszhck/637436288996836659/3226440.png"></div><p> <p> 精度高由于V錐結(jié)構(gòu)無可動部件,使得V錐具有很好的重復(fù)性,一般小于0.1%。由于量程比寬,即它的線性度好,從而使其精度較高。根據(jù)GB17167-2006《用能單位能源計量器具配備和管理通則》規(guī)定,用于能源計量的流量計準(zhǔn)確度等級要求為:煤氣和天然氣為2.0級。所以在測試分離器出口的氣體測量中,在10∶1的量程范圍內(nèi),V錐加上差壓變送器及二次表的總體誤差不會低于1.5級,完全能滿足計量要求。長期性能好由于錐體的輪廓形狀限制了介質(zhì)的流動,流體沿著錐體形成了邊界層,這意味著錐體的邊緣不容易受不清潔的流體磨損,從而使開孔比β保持不變,使得流量計可以在很長時間內(nèi)保持精度而不必校驗。 </p> <p> <br /> </p> <p> <br /> </p> </p> <p> <br /> 孔板流量計可以通過測量壓差來衡量流體流量的大小。揚(yáng)州熱式氣體質(zhì)量流量計廠家</p><p style="text-indent:25px">流量計有熱式質(zhì)量流量計、差壓式質(zhì)量流量計、葉輪式質(zhì)量流量計、哥力式質(zhì)量流量計、間接式質(zhì)量流量計；揚(yáng)州熱式氣體質(zhì)量流量計廠家</p><p style="text-indent:25px">一體式孔板流量計是現(xiàn)階段在原油、化工廠、冶金工業(yè)、電力工程、供暖、供電等行業(yè)用以準(zhǔn)確測量汽體、蒸氣、液體及引的總流量的關(guān)鍵方法，流通截面的轉(zhuǎn)變在現(xiàn)場應(yīng)用中，填料表層很有或許會粘合上一層污漬或殘渣，形成商品流通截面縮小，準(zhǔn)確測量氣體壓力便會擴(kuò)展，進(jìn)而準(zhǔn)確測量總流量擴(kuò)展。處理方法:查驗填料周邊是不是整潔，對其展開清理，智能變送器零點漂移假設(shè)使用時間較長，智能變送器的零點很有或許會產(chǎn)生飄移，如果是正飄移，顯現(xiàn)信息的氣體壓力或許擴(kuò)展，顯現(xiàn)信息的總流量便會擴(kuò)展。處理方法:對智能變送器的零點展開校準(zhǔn)，一體式孔板流量計上中下游接管段間隔不足上中下游接管段間隔假設(shè)不足，汽體將無法得到充足發(fā)展趨勢，會使計量檢定結(jié)果導(dǎo)致很大誤差，假設(shè)上下游在要求接管段內(nèi)存有獨自彎管或平面圖雙彎管，將使計量檢定結(jié)果較高。處理方法:更新改造壓縮空氣管道，使上中下游接管段間隔做到要求規(guī)定。在節(jié)省裝置以前改裝鎮(zhèn)流器，孔板厚度不符合要求標(biāo)準(zhǔn)中要求填料薄厚應(yīng)挨近填料打孔薄厚e與0.05D中間。假設(shè)超越這一領(lǐng)域，將使汽體穿過填料的摩擦阻力損害擴(kuò)展，使計量檢定值比詳細(xì)值較高。揚(yáng)州熱式氣體質(zhì)量流量計廠家</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2741884.html</p></div></div></div></div></div><div id="pjqdacy" class="page-right twoColRt"><div id="eoq2he2" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="uyahjlx" class="recomPic 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