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href="http://m.cdcfah.com/cp/second-yiqiyibiao_wybez/">物位儀表</a>?<a href="http://m.cdcfah.com/cp/third-wybez_yyb/">液位儀表</a>?山東金屬轉(zhuǎn)子流量計(jì)廠家服務(wù)至上江蘇中徽測(cè)控儀表供應(yīng)</p><div id="vt2n9da" class="leftbox clearfix"><h1>山東金屬轉(zhuǎn)子流量計(jì)廠家服務(wù)至上江蘇中徽測(cè)控儀表供應(yīng)</h1><div id="zsz7efs" class="proBig"><div id="y7x4vhd" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436289060000603/4529138.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7d3zok7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436289060000603/4529138.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ltvz83o" 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>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>山東金屬轉(zhuǎn)子流量計(jì)廠家,流量計(jì)</p><p><span>***更新：</span>2020-12-26 05:11:03</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="phdfp7u" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇中徽測(cè)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(hào)</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="xl3qfro" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="gzhb8j3" class="box"><p><p> 孔板流量計(jì)安裝對(duì)管道的要求：1．孔板流量計(jì)安裝時(shí)應(yīng)配有一段測(cè)量管,至少保持**DN、后5DN的等徑直管段，以提高測(cè)量精度。2．在孔板流量計(jì)前后若需安裝閥門，比較好選閘閥且在運(yùn)行中全開(kāi)；調(diào)節(jié)閥則應(yīng)在下游5DN之后的管路中。3．引壓管路的內(nèi)徑與管路長(zhǎng)度和介質(zhì)臟污程度有關(guān)，通常在45米以內(nèi)用內(nèi)徑為8-12mm的管子。4．測(cè)量液體流量時(shí)引壓管水平段應(yīng)在同一水平面內(nèi)。若是在垂直管道上安裝節(jié)流件，引壓短管之間相距一定的距離（垂線方向），這對(duì)差壓變送器的零點(diǎn)有影響，應(yīng)通過(guò)“零點(diǎn)遷移”來(lái)校正。5．引壓管路應(yīng)有牢固的支架托承，兩根取壓管路應(yīng)盡可能互相靠近并遠(yuǎn)離熱源或震動(dòng)源，測(cè)量水蒸汽流量時(shí)，應(yīng)用保溫材料一同包扎，必須時(shí)（如氣溫0℃以下）加伴熱管防止結(jié)冰，山東金屬轉(zhuǎn)子流量計(jì)廠家。在測(cè)量臟污流量時(shí)，應(yīng)附設(shè)隔離器或沉降器。6．引壓管路內(nèi)必須始終保持單相流體狀態(tài)。被測(cè)流體是氣體時(shí)，引壓管路（包括差壓計(jì)的壓力腔）內(nèi)全部是氣相；被測(cè)流體是液體時(shí)，引壓管路內(nèi)全部是液相，不能有氣泡，山東金屬轉(zhuǎn)子流量計(jì)廠家，山東金屬轉(zhuǎn)子流量計(jì)廠家。為此應(yīng)在引壓管路的比較低點(diǎn)裝排水閥或在比較高點(diǎn)裝排氣閥，在新裝或檢修差壓變送器時(shí)時(shí)應(yīng)特別注意。 </p> <p> <br /> 固定式超聲波流量計(jì)用于安裝在某一固定方位，對(duì)某一特定管道內(nèi)流體的流量進(jìn)行長(zhǎng)時(shí)間不間斷的計(jì)量；山東金屬轉(zhuǎn)子流量計(jì)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東金屬轉(zhuǎn)子流量計(jì)廠家,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289060000603/4529138.png"></div><p> 電極襯里附著物的影響在丈量有附著沉淀物的流體時(shí)，電極表面將受污染，經(jīng)常引起零點(diǎn)變動(dòng)，故必需留意。零點(diǎn)變化和電極污染程度兩者的關(guān)系，要進(jìn)行定量分析比較難題，但可以說(shuō)，電極直徑越小，所受的影響越少，在使用中，應(yīng)留意電極的清污，以防止附著。在襯里上附著沉淀物時(shí)產(chǎn)生的誤差Δε，假如附著的厚度是一樣，則可由式：Δε=1-2/[1+(Kω/Kf)+(1-Kω/Kf)×(1-2t/D)2]計(jì)算，式中Kω、Kf分別為附著物和丈量流體的電導(dǎo)率，附著物厚度為t，直徑為D。若式中，Kω和Kf相等，則無(wú)誤差，附著物的電導(dǎo)率較低時(shí)，上式也成立，但由于會(huì)增加電極的輸出阻抗，因此受到限制，如絕緣性沉淀物浸在流體中就是這種情況。相反，如附著金屬粉末等，因高電導(dǎo)率的附著層，使感應(yīng)電勢(shì)短路，使電極輸出偏低，造成負(fù)偏差。在丈量具有沉淀附著物的流體時(shí)，除了選擇如玻璃或聚四氯乙烯等難以附著沉淀的襯里外，還應(yīng)增其流速。假如在流體中平均地含有氣泡，則丈量的是包括氣泡的體積流量，并且使所測(cè)流量值不不亂，而引入誤差。綜上所述，在選用流量計(jì)特別是大口徑電磁流量計(jì)時(shí)，應(yīng)考慮今后對(duì)傳感器的電極及襯里的維護(hù)題目。如選用上海光華·愛(ài)而美特儀器有限公司的刮刀電極或可更換式電極. </p> <p> <br /> </p> <p> <br /> 鹽城孔板流量計(jì)供貨廠污水流量計(jì)結(jié)構(gòu)簡(jiǎn)單、牢固可靠、使用壽命長(zhǎng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東金屬轉(zhuǎn)子流量計(jì)廠家,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289042998618/4460086.png"></div><p> 超聲波流量計(jì)也是比較常見(jiàn)的流量計(jì)，它的安裝在所有流量計(jì)的安裝中是簡(jiǎn)單便捷的，只要選擇一個(gè)合適的測(cè)量點(diǎn)，把測(cè)量點(diǎn)處的管道參數(shù)輸入到流量計(jì)中，然后把探頭固定在管道上即可。 <span style="font-size:12px;"> </span> </p> <p> 安裝要點(diǎn) </p> <p> 1、選擇充滿流體的材質(zhì)均勻質(zhì)密、易于超聲波傳輸?shù)墓芏?，如垂直管段或水平管段?</p> <p> 2、安裝距離應(yīng)選擇上游大于10倍直管徑、下游大于5倍直管徑以內(nèi)無(wú)任何閥門、彎頭、變徑等均勻的直管段，安裝點(diǎn)應(yīng)充分遠(yuǎn)離閥門、泵、高壓電和變頻器等干擾源。 </p> <p> 3、避免安裝在管道系統(tǒng)的比較高點(diǎn)或帶有自由出口的豎直管道上。 </p> <p> 4、對(duì)于開(kāi)口或半滿管的管道，流量計(jì)應(yīng)安裝在U型管段處。 </p> <p> 渦街流量計(jì) </p><p> 環(huán)形孔板適用于各種流體（氣體、蒸汽、液體）介質(zhì)，它除了具有標(biāo)準(zhǔn)孔板的結(jié)構(gòu)簡(jiǎn)單、牢固、安裝使用方便等特點(diǎn)以外，還具有以下優(yōu)點(diǎn)： </p> <p> 1、更適合測(cè)量飽和蒸汽、過(guò)熱蒸汽以及煤氣、冷卻水等臟污流體。 </p> <p> 2、更容易適應(yīng)高溫、高壓流體的流量測(cè)量。 </p> <p> 3、比圓缺孔板、偏心孔板工作更可靠，測(cè)量更精確。 </p> <p> 4、以較低的成本制成耐腐蝕型，測(cè)量腐蝕性流體的流量。 </p> <p> 5、由于本產(chǎn)品外部形狀簡(jiǎn)單，容易制成夾套保濕型在夾套內(nèi)通蒸汽，可以防止被測(cè)流體在測(cè)量管段內(nèi)凝結(jié)或粘附；通以冷卻液，可防止易汽化的液體在流經(jīng)測(cè)流板時(shí)形成汽液兩相流。 </p> <p> 6、采用均壓環(huán)結(jié)構(gòu)，減少了測(cè)量誤差來(lái)源引至差壓變送器的是在測(cè)流板上、下游處取壓管橫截面的靜壓平均值，減弱了上游局部阻力形成的速度分布畸變對(duì)精度的影響，實(shí)際精度更接近基本精度。 </p> <p> 7、要求較低的前后直管段 </p> <p> 8、采用一體型結(jié)構(gòu)形式，減少管線敷設(shè)。 </p> <p> 9、采用帶遠(yuǎn)傳膜盒的差壓變送器，可以測(cè)量諸如煤粉、渣油等臟污液體的流量。 </p> <p> 工作原理：環(huán)形孔板節(jié)流裝置和普通的標(biāo)準(zhǔn)孔板一樣，依據(jù)的基本原理是流體連續(xù)性方程和伯努利方程。把環(huán)形孔板安裝在圓管中，當(dāng)液體流經(jīng)節(jié)流裝置時(shí)，其上、下游側(cè)之間就會(huì)產(chǎn)生壓力差。 </p> <p> 連接方式：法蘭連接和焊接連接。為了智能電磁流量計(jì)能夠很好地正常使用，智能電磁流量計(jì)傳感器接地一定要安裝好。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東金屬轉(zhuǎn)子流量計(jì)廠家,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289081162701/1953504.png"></div><p style="text-indent:25px">長(zhǎng)期以來(lái),孔板流量計(jì)由于其技術(shù)成熟、標(biāo)準(zhǔn)化程度高、結(jié)構(gòu)簡(jiǎn)單、維護(hù)方便等特點(diǎn)而被地應(yīng)用。在海洋石油工程中也常常會(huì)用到孔板流量計(jì)。以采油平臺(tái)的測(cè)試分離器氣體出口測(cè)量為例,由于該介質(zhì)為氣體,一般壓力較高,介質(zhì)成分較復(fù)雜,流量范圍隨著年份變化較大等特點(diǎn),決定了該場(chǎng)合應(yīng)用孔板流量計(jì)為合適。尤其近年出現(xiàn)的可更換孔板更是解決了原有孔板流量計(jì)的低量程比的缺點(diǎn)而被地應(yīng)用。但是可更換的孔板價(jià)格昂貴,一般至少為同管徑孔板流量計(jì)價(jià)格的5倍以上。那么有沒(méi)有更好的產(chǎn)品來(lái)代替它,我們認(rèn)為V錐流量計(jì)就是代替它的優(yōu)先產(chǎn)品。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。山東金屬轉(zhuǎn)子流量計(jì)廠家</p><p style="text-indent:25px">電磁流量計(jì)的安裝與調(diào)試比其它流量計(jì)復(fù)雜，且要求更嚴(yán)格。山東金屬轉(zhuǎn)子流量計(jì)廠家</p><p style="text-indent:25px">孔板流量計(jì)本應(yīng)是鋒利直角的入口邊緣卻變成了喇叭口，改動(dòng)了流出系數(shù)，產(chǎn)生了較大誤差，不得不改換。可見(jiàn)，丈量高溫流體的流量，本產(chǎn)品是佳選擇，流體流經(jīng)管道內(nèi)的節(jié)流安裝，在節(jié)流件左近形成部分收縮，流速增加，在其上、下游兩側(cè)產(chǎn)生靜壓力差?？装辶髁坑?jì)的節(jié)流安裝構(gòu)造簡(jiǎn)單，且結(jié)實(shí)、性能穩(wěn)定牢靠，運(yùn)用期限長(zhǎng)，價(jià)錢較低，是工業(yè)中常用到的流量丈量?jī)x表，整個(gè)加工過(guò)程采用國(guó)際規(guī)范，并經(jīng)過(guò)嚴(yán)厲的校驗(yàn)檢測(cè)。孔板流量計(jì)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)活動(dòng)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(jì)能夠經(jīng)過(guò)丈量壓差來(lái)權(quán)衡流體流量的大小。這種丈量辦法是以能量守衡定律和活動(dòng)連續(xù)性定律為基準(zhǔn)的，孔板流量計(jì)可丈量管道中各種流體的流量，可丈量的介質(zhì)有液體、氣體、蒸汽，被普遍應(yīng)用于石油、化工、冶金、輕工、煤礦等工業(yè)部門?？装辶髁坑?jì)前后產(chǎn)生一個(gè)靜壓力差，該壓力差與流量存在著一定的函數(shù)關(guān)系，流量越大，壓力差就越大，差壓信號(hào)傳送給差壓變送器，轉(zhuǎn)換成4-20ma.DC模仿信號(hào)輸出，遠(yuǎn)轉(zhuǎn)給流量積算儀，完成流體流量的計(jì)量。質(zhì)量型流量計(jì)，應(yīng)用智能型差壓變送器，對(duì)工況溫/壓停止自動(dòng)補(bǔ)償后。山東金屬轉(zhuǎn)子流量計(jì)廠家</p></p><br /><p>文章來(lái)源地址: 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