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src="/skins/170979/images/crumb_icon.png" /><p>當前位置：<a href="/">首頁(yè)</a> > <a href="/article.html">技術(shù)文章</a> > <span>想要在線(xiàn)PH計的準確結果那還不簡(jiǎn)單</span></p> </div>   <div id="nqrxtul" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">想要在線(xiàn)PH計的準確結果那還不簡(jiǎn)單</h1> <div id="kijpl9x" class="NyNewsdetail_tips">更新時(shí)間：2022-08-08 點(diǎn)擊次數：1691</div> <div id="ckvw88f" class="NyNewsdetail_con"> <div>　　<strong>在線(xiàn)PH計</strong>外殼采用高耐腐蝕材料，整體結構具有IP68防護等級，可在水下10米深度及各種惡劣工作環(huán)境下長(cháng)期工作。內置高精度溫度傳感器和溫度補償算法。配備專(zhuān)業(yè)的數據采集軟件，可實(shí)時(shí)在線(xiàn)監測傳感器的工作狀態(tài)和測量結果，可方便地進(jìn)行標定、記錄、故障診斷等操作。</div><div>　　</div><div>　　當現場(chǎng)的在線(xiàn)PH計測量不準確時(shí)，大家一定會(huì )焦躁不安。首先在測量前，對于新的PH計玻璃電極使用前應預先3mol/L的保護液里，)中浸泡24小時(shí)以上，以穩定其不對稱(chēng)電位和降低電阻。注意了以下這些，想要準確結果那還不簡(jiǎn)單。<br /> </div><div>　　</div><p style="text-align: center;"><img src="https://img66.chem17.com/9/20220808/637955520607992760911.png" alt="在線(xiàn)PH計" width="191" height="179" align="middle" /><br /> </p><p> </p><div>　　1、工業(yè)PH計測量值有時(shí)不是一直不變的。這個(gè)是因為該被測溶液容易受到空氣中CO2的影響，也會(huì )有一個(gè)微小的變化，這種情況下可以以一定時(shí)間內數值穩定作為測試結果，比如30s,或者重復兩次結果相近取平均。</div><div>　　</div><div>　　2、測定被測溶液之后，要認真沖洗，并吸干水珠（此時(shí)操作要注意玻璃球泡的易碎性），再測定下一個(gè)樣品。</div><div>　　</div><div>　　3、如果是實(shí)驗室PH計測試溶液時(shí)可稍微攪拌，但速度不宜過(guò)快，否則易產(chǎn)生氣泡附在電極上，造成PH計讀數不穩。</div><div>　　</div><div>　　4、當測量值變化較大及反應很慢時(shí),可能是玻璃電極被污染或玻璃電極保護不當導致干燥。</div><div>　　</div><div>　　5、對于被污染的玻璃電極，這時(shí)需要根據污染物的性質(zhì),選用適當溶液清洗。如有機油脂類(lèi)物要用CCL4或丙酮清洗干凈，之后需用0.1mol/L稀鹽酸沖洗浸泡1小時(shí)，再用蒸餾水沖洗浸泡平衡一晝夜再使用。對于干燥的電極需要用保護液浸泡，之后進(jìn)行校正。</div><div>　　</div><div>　　在線(xiàn)PH計電極沉入式安裝時(shí)，建議大家使用PH計護套管。被測溶液中通常都會(huì )含一些酸堿，使用護套管，一來(lái)可以防止電極進(jìn)水中毒，二來(lái)因為電極的電纜線(xiàn)不具有防腐功能，使用護套管可以更好地保護電極線(xiàn)，防止其被腐蝕。沉入式安裝時(shí)，護套管可以定制長(cháng)度。</div> </div> <div id="4j3dul3" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-3098225.html">如何解決差壓變送器的遷移問(wèn)題？</a></li> <li>下一篇：<a href="/Article-3090927.html">校準工業(yè)濁度儀時(shí)有哪些注意事項？</a></li> </ul> </div> </div>   <div 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