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target="_blank">A+K調(diào)整型孔板流量計(jì)</a>是一種流體流量計(jì)，克服了原有的轉(zhuǎn)子重量不能調(diào)整的缺點(diǎn)，將轉(zhuǎn)子由實(shí)心改為空心，當(dāng)流體的壓力和介質(zhì)發(fā)生變化時(shí)，只須調(diào)整轉(zhuǎn)子的重量，就能適應(yīng)多變的使用條件，是流體流量控制的理想的儀表。由液體流動(dòng)產(chǎn)生的感應(yīng)電勢(shì)信號(hào)微弱，干擾因素的影響大，轉(zhuǎn)換器的作用就是將感應(yīng)電勢(shì)信號(hào)放大并轉(zhuǎn)換成標(biāo)準(zhǔn)信號(hào)并抑制干擾信號(hào)。其任務(wù)是把電極檢測(cè)到的感應(yīng)電勢(shì)信號(hào)Ex經(jīng)放大轉(zhuǎn)換成直流信號(hào)。</div><div> </div><p align="center"><img src="https://img68.ybzhan.cn/9/20221206/638059152698693982197.png" width="428" height="440" align="middle" alt="" /></p><p> </p><div>　　那么有哪些因素會(huì)影響A+K調(diào)整型孔板流量計(jì)的測(cè)量準(zhǔn)確度呢？</div><div> </div><div>　　1、安裝條件和使用環(huán)境</div><div> </div><div>　　它對(duì)流場(chǎng)有一定的要求。管道內(nèi)液體必須為滿(mǎn)管。安裝時(shí)前、后直管段在一般情況下應(yīng)至少滿(mǎn)足10D后5D的要求(若使用說(shuō)明書(shū)上有具體要求，應(yīng)滿(mǎn)足說(shuō)明書(shū)上要求)。若上、下游側(cè)安裝有90°彎頭、T字形彎頭、漸擴(kuò)管、漸縮管等阻流件時(shí)，應(yīng)將上、下游直管段延長(zhǎng)到30D至50D。不少使用者忽視了閥門(mén)對(duì)流場(chǎng)的影響，認(rèn)為閥門(mén)*打開(kāi)時(shí)管道內(nèi)為通徑對(duì)流場(chǎng)無(wú)影響。其實(shí)不然，無(wú)論是蝶閥還是球閥、閘閥，當(dāng)其*打開(kāi)時(shí)，其內(nèi)部仍然有阻流件影響流場(chǎng)，流場(chǎng)不穩(wěn)定就造成了測(cè)量準(zhǔn)確度的降低。使用時(shí)應(yīng)避開(kāi)強(qiáng)電磁和聲波信號(hào)的干擾。使用中我們發(fā)現(xiàn)在變頻器旁、高壓線下方、車(chē)輛密集的馬路旁，都會(huì)對(duì)其測(cè)量準(zhǔn)確度產(chǎn)生影響。</div><div> </div><div>　　2、管道參數(shù)測(cè)量不準(zhǔn)確</div><div> </div><div>　　利用聲波信號(hào)在同一傳播距離時(shí)，在順流、逆流兩個(gè)方向上有不同的傳播速度，用傳播速度之差與被測(cè)液體流速的關(guān)系求得流速。流量是流速與管道橫截面積的乘積。若要得到準(zhǔn)確的流量，就需要知道準(zhǔn)確的換能器傳播距離和管道橫截面積，而這些數(shù)據(jù)是通過(guò)使用者人工輸入管道外徑、材質(zhì)、壁厚、襯里及襯里厚度等參數(shù)，經(jīng)內(nèi)部計(jì)算得出的。因此，這些參數(shù)的準(zhǔn)確與否將直接影響到其測(cè)量準(zhǔn)確度。</div> </div> <div id="ugmt4fx" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-633001.html">A+K一體化平衡流量計(jì)怎么安裝？</a></li> <li>下一篇：<a href="/Article-626535.html">2022年1-10月份全國(guó)規(guī)模以上工業(yè)企業(yè)利潤(rùn)下降3.0% （轉(zhuǎn)載）</a></li> </ul> </div> </div>   <div id="ugmt4fx" class="ly_foot"> <div id="ugmt4fx" class="ly_Ftmain"> <div id="ugmt4fx" class="ly_Ftcon"> <div id="ugmt4fx" class="ly_FtLeft"> <ul> <li> <div id="ugmt4fx" class="Ft_tit">關(guān)于我們</div> <a href="/aboutus.html" rel="nofollow">公司簡(jiǎn)介</a> <a href="/news.html">新聞中心</a> <a href="/article.html">技術(shù)文章</a> </li> <li> <div id="ugmt4fx" class="Ft_tit">產(chǎn)品中心</div> <a href="/ParentList-641398.html">HONTZ-UV超聲波渦街流量計(jì)</a> <a href="/ParentList-641396.html">A+K文特流量計(jì)</a> <a href="/ParentList-641397.html">A+K環(huán)楔流量計(jì)</a> <a href="/ParentList-641395.html">A+K平衡流量計(jì)</a> <a href="/ParentList-910780.html">高壓型電磁流量計(jì)</a> <a href="/ParentList-913088.html">電磁水表</a> <a href="/ParentList-913158.html">A+K均速板流量計(jì)</a> <a 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