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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="zyfco2z" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="rlrt8yp" class="box"><p><p style="text-indent:25px">超聲波流量計(jì)是基于超聲波在流動(dòng)介質(zhì)中傳播的速度等于被測(cè)介質(zhì)的平均流速和聲波本身速度的幾何和的原理而設(shè)計(jì)的。它也是由測(cè)流速來(lái)反映流量大小的。超聲波流量計(jì)雖然在70年代才出現(xiàn)，但由于它可以制成非接觸型式，并可與超聲波水位計(jì)聯(lián)動(dòng)進(jìn)行開(kāi)口流量測(cè)量，對(duì)流體又不產(chǎn)生擾動(dòng)和阻力，所以很受歡。超聲波流量計(jì)按測(cè)量原理分可分為時(shí)差式和多普勒式利用時(shí)差式原理制造的時(shí)差式超聲流量計(jì)近年來(lái)得到廣泛的關(guān)注和使用，是目前企事業(yè)使用多的一種超聲波流量計(jì)，蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好，蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好。利用多普勒效應(yīng)制造的超聲多普勒流量計(jì)多用于測(cè)量介質(zhì)有一定的懸浮顆?；驓馀萁橘|(zhì)，使用有一定的局限性，但卻解決了時(shí)差式超聲波流量計(jì)只能測(cè)量單一清澈流體的問(wèn)題，也被認(rèn)為是非接觸測(cè)量雙相流的理想儀表，蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好。長(zhǎng)期使用了的智能電磁流量計(jì)的內(nèi)管里會(huì)積污垢，這樣也會(huì)影響電磁流量計(jì)的測(cè)量效果。蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289184268193/6612766.png"></div><p style="text-indent:25px">主要安裝要求是對(duì)于直管段的要求及管道振動(dòng)要求，渦街流量傳感器的上游側(cè)和下游側(cè)應(yīng)有較長(zhǎng)的直管段;管道不能有振動(dòng)，如有振動(dòng)，則需對(duì)流量計(jì)兩側(cè)加固定裝置。對(duì)于渦街流量計(jì)來(lái)說(shuō)，測(cè)量氣體流量時(shí)，若被測(cè)氣體含有少量的液體，流量計(jì)應(yīng)安裝在管線的較高處。測(cè)量液體時(shí)，若被測(cè)液體中含有少量的氣體，流量計(jì)應(yīng)安裝在管線的較低處。測(cè)壓孔和測(cè)溫孔：需要測(cè)壓時(shí),須將測(cè)壓孔設(shè)置在流量計(jì)下游2~7D的地方。需要測(cè)溫時(shí),將溫度傳感器設(shè)置在離測(cè)壓點(diǎn)下游的1~2D之間處。管道支撐：盡量將流量計(jì)安裝在振動(dòng)加速度小于20m/s2的地方。當(dāng)管道振動(dòng)過(guò)強(qiáng)時(shí),應(yīng)對(duì)管道安裝加固支撐。封墊片：切不可將密封墊片突出到管道中,否則將導(dǎo)致無(wú)法接受的誤差。蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好孔板流量計(jì)可以通過(guò)測(cè)量壓差來(lái)衡量流體流量的大小。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289195098254/5407997.png"></div><p> 變送器零點(diǎn)漂移：如果使用時(shí)間較長(zhǎng)，變送器的零點(diǎn)可能會(huì)發(fā)生漂移，如果是負(fù)漂移，顯示壓差將會(huì)減小，顯示的流量也會(huì)減小。解決辦法：對(duì)變送器的零點(diǎn)進(jìn)行校正。上下游直管段長(zhǎng)度不夠，上下游直管段如果不夠長(zhǎng)，氣體將得不到充分發(fā)展，會(huì)使計(jì)量結(jié)果造成較大誤差，如果上游在規(guī)定直管段內(nèi)存在多個(gè)彎頭，將使計(jì)量結(jié)果偏低。解決辦法：改造蒸汽管道，是上下游直管段長(zhǎng)度達(dá)到規(guī)定要求。在節(jié)流裝置前加整流器。、差壓變送器的三閥組漏氣，如果三閥組中的高壓閥貨平衡閥漏氣，將會(huì)導(dǎo)致測(cè)量差壓值減小，測(cè)量結(jié)果就會(huì)偏低。解決辦法：如果三閥組中的高壓閥門(mén)漏氣，將該閥門(mén)進(jìn)行緊固，必要時(shí)進(jìn)行更換，如果三閥組中的平衡閥內(nèi)漏，將該閥門(mén)進(jìn)行緊固，必要時(shí)進(jìn)行更換。 </p> <p> <br /> </p> <p> <br /> </p><p style="text-indent:25px">差壓式流量計(jì)差壓式流量計(jì)是根據(jù)安裝于管道中流量檢測(cè)件產(chǎn)生的差壓,已知的流體條件和檢測(cè)件與管道的幾何尺寸來(lái)計(jì)算流量的儀表。差壓式流量計(jì)由一次裝置(檢測(cè)件)和二次裝置(差壓轉(zhuǎn)換和流量顯示儀表)組成。通常以檢測(cè)件形式對(duì)差壓式流量計(jì)分類(lèi),如孔板流量計(jì)、文丘里流量計(jì)、均速管流量計(jì)等。二次裝置為各種機(jī)械、電子、機(jī)電一體式差壓計(jì),差壓變送器及流量顯示儀表。它已發(fā)展為三化(系列化、通用化及標(biāo)準(zhǔn)化)程度很高的、種類(lèi)規(guī)格龐雜的一大類(lèi)儀表,它既可測(cè)量流量參數(shù),也可測(cè)量其它參數(shù)(如壓力、物位、密度等)。差壓式流量計(jì)的檢測(cè)件按其作用原理可分為:節(jié)流裝置、水力阻力式、離心式、動(dòng)壓頭式、動(dòng)壓頭增益式及射流式幾大類(lèi)。渦輪流量計(jì)特點(diǎn)：抗雜質(zhì)能力強(qiáng)、抗電磁干擾和抗振能力強(qiáng);</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289060000603/4529138.png"></div><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。電磁流量計(jì)測(cè)量通道是段光滑直管,不會(huì)阻塞,適用于測(cè)量含固體顆粒的液固二相流體,如紙漿、泥漿、污水等;蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好</p><p style="text-indent:25px">電磁流量計(jì)要求有非?？煽康慕拥兀龊媒拥仄帘?，否則就會(huì)產(chǎn)生干擾電流。蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好</p><p> 智能電磁流量計(jì)因?yàn)榻Y(jié)構(gòu)簡(jiǎn)單，流量計(jì)外殼、被測(cè)流體和管道連接法蘭三者之間應(yīng)做等電位連接，并應(yīng)接地；沒(méi)有可以動(dòng)彈的部件，并且也沒(méi)有任何可以組織流體進(jìn)入到儀器的結(jié)構(gòu)，所以在進(jìn)行測(cè)量時(shí)，沒(méi)有太多的能量損失，對(duì)于測(cè)試結(jié)果誤差較小。在垂直的管道上安裝時(shí)，被測(cè)流體的流向應(yīng)自下而上，在水平的管道上安裝時(shí)，兩個(gè)測(cè)量電極不應(yīng)在管道的正上方和正下方位置；此外因?yàn)檫@種獨(dú)特的設(shè)計(jì)結(jié)構(gòu)，儀器在使用一段時(shí)間后不會(huì)發(fā)生堵塞等故障。這種智能電磁流量計(jì)在進(jìn)行測(cè)量時(shí)不會(huì)受到，流體的粘度和密度的影響，因此智能電磁流量計(jì)只需經(jīng)過(guò)水準(zhǔn)標(biāo)定以后就可以對(duì)流體進(jìn)行測(cè)量。除此之外，這種儀器沒(méi)有機(jī)械的慣性，流量計(jì)上游直管段長(zhǎng)度和安裝支撐方式應(yīng)符合設(shè)計(jì)文件要求?？梢苑浅：玫膶?shí)現(xiàn)對(duì)流體的制動(dòng)，反應(yīng)非常靈敏，可以瞬時(shí)間測(cè)得大量流體的數(shù)據(jù)。 </p> <p> <br /> </p> <p> <br /> 蘇州插入式巴類(lèi)流量計(jì)哪個(gè)廠家質(zhì)量好</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2718152.html</p></div></div></div></div></div><div id="8wfbfw7" class="page-right twoColRt"><div id="tx2zd2l" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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