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<div>　　在化工生產(chǎn)中，大部分反應都是在液相中進(jìn)行的，其中中間產(chǎn)品和產(chǎn)品的pH值往往是影響生產(chǎn)過(guò)程質(zhì)量的重要因素。因此，介質(zhì)pH值的在線(xiàn)監測對于穩定工藝、提高產(chǎn)品質(zhì)量、減少原材料消耗和設備腐蝕具有重要作用。作為連續檢測溶液pH值的儀器，工業(yè)在線(xiàn)ph計是能否獲得正確參數的關(guān)鍵。工業(yè)在線(xiàn)ph電極的使用壽命與被測樣品的性質(zhì)、樣品溫度、使用頻率和維護保養有關(guān)。在正常使用和正確維護的情況下，pH電極的使用壽命為1～2年。那么我們該如何識別ph計的電極是否失效?<br /> </div><div>　　工業(yè)在線(xiàn)ph電極是否還能使用，其實(shí)很簡(jiǎn)單。在使用pH控制器的pH電極之前，首先檢查玻璃泡是否有裂紋和破損。如果不是，請使用pH緩沖溶液進(jìn)行兩點(diǎn)校準。當定位和坡度按鈕可以調整到相應的pH值時(shí)，一般認為可以使用。否則，可根據操作手冊激活電極。<br /> </div><div>　　pH控制器的工業(yè)在線(xiàn)ph電極也可稱(chēng)為傳感器。研究和實(shí)踐證明，如果工業(yè)在線(xiàn)ph計配備新生產(chǎn)的合格傳感器，分析儀建立的電壓信號與pH顯示值關(guān)系線(xiàn)的斜率可達-59mv/pH。離這個(gè)斜坡越遠，傳感器的剩余使用壽命越短。理論和實(shí)踐也證明，如果分析儀能通過(guò)兩點(diǎn)校正，校正后的直線(xiàn)斜率必須大于-59mv/pH的75%(約-44mv/PH);如果修正后的直線(xiàn)斜率接近-44mv/pH，則說(shuō)明傳感器將失效，不能很快通過(guò)兩點(diǎn)修正，到時(shí)候我們應該更換傳感器。</div> </div> <div id="relrmbx" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-3056353.html">分享一下關(guān)于電磁流量計的接地問(wèn)題</a></li> <li>下一篇：<a 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