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<div>　　便攜式水樣抽濾器是水質(zhì)采樣后對(duì)被采集水樣的現(xiàn)場(chǎng)過(guò)濾的儀器設(shè)備，自帶高容量鋰電池，續(xù)航時(shí)間長(zhǎng)達(dá)20小時(shí)以上，廣泛應(yīng)用于環(huán)境監(jiān)測(cè)系統(tǒng)、自來(lái)水公司、鋼鐵企業(yè)、高?？蒲?、教學(xué)環(huán)境科研等部門。</div><div>　　通過(guò)用戶反饋以及現(xiàn)場(chǎng)反復(fù)試驗(yàn)總結(jié)得知，出現(xiàn)以上現(xiàn)象的場(chǎng)景通常是采樣液面距離采樣器的垂直距離較高，當(dāng)垂直距離達(dá)到2米以上的時(shí)候就會(huì)出現(xiàn)采樣量誤差大的情況，隨著垂直距離的變大，采樣量誤差也越來(lái)越大。造成以上現(xiàn)象的原因主要有以下幾個(gè)：</div><div>　　1、隨著垂直距離的提升，蠕動(dòng)泵在吸取水樣時(shí)，真空度逐漸加大，從而使水中的空氣容易逸出形成氣泡，而通常采樣量是通過(guò)蠕動(dòng)泵運(yùn)行時(shí)間來(lái)確定的，相同的時(shí)間下蠕動(dòng)泵內(nèi)流過(guò)的容積是一定的，但假如該容積內(nèi)混合水樣以及容易一定容積的空氣，這樣會(huì)導(dǎo)致水樣采樣量的減少，該現(xiàn)象隨著垂直距離越大，表現(xiàn)出的越明顯；</div><div>　　2、在排空水樣時(shí)，由于距離較長(zhǎng)存在排空不*，在采樣管內(nèi)殘留少部分水樣，再次取樣時(shí)殘留的水樣首先到達(dá)液位傳感器處，致使其誤動(dòng)作，從而使采樣量誤差較大；</div><div>　　3、蠕動(dòng)管或采樣管質(zhì)量不良，在垂直距離提升時(shí)，由于真空度的增加造成蠕動(dòng)管或采樣管發(fā)生壓扁變形狀況，導(dǎo)致采樣量不準(zhǔn)確。</div><div>　　針對(duì)采樣量不準(zhǔn)確的現(xiàn)象以及其現(xiàn)象產(chǎn)生的原因，便攜式水樣抽濾器進(jìn)行了技術(shù)上的改良：首先，反復(fù)測(cè)試，選取合格的不易形變的蠕動(dòng)管及采樣管，以解決管材壓扁變形；其次，增加采樣量均衡模塊，以解決由于空氣原因以及液位傳感器誤動(dòng)作的問(wèn)題；第三，在程序上做升級(jí)，用戶可以選擇根據(jù)不同的估計(jì)垂直距離選擇相對(duì)應(yīng)不同的程序編號(hào)，定制化采樣使采樣量更準(zhǔn)確。</div><div>　　希望上述內(nèi)容能夠幫助大家更好的了解本產(chǎn)品，同時(shí)也歡迎大家持續(xù)關(guān)注本站，小編會(huì)定期為大家?guī)?lái)更多的相關(guān)產(chǎn)品知識(shí)介紹。</div> 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