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</div>   <div id="szcvma5v" class="ny_content"> <div id="szcvma5v" class="w1200 clear"> <div id="szcvma5v" class="ny_bread_nav"><img src="/skins/290838/images/position.png" />當前位置：<a href="/">首頁</a> > <a href="/article.html">技術文章</a> > 溶氧電極校準與維護的實用指南</div> </div> <div id="szcvma5v" class="ny_content_bd"> <div id="szcvma5v" class="w1200 clear"> <div id="szcvma5v" class="ny_newsdetail clear"> <h1 class="ny_newsdetail_title">溶氧電極校準與維護的實用指南</h1> <div id="szcvma5v" class="ny_newsdetail_tips">更新時間：2025-01-23 | 點擊率：116</div> <div id="szcvma5v" class="ny_newsdetail_con"> <div>　　<strong>溶氧電極</strong>是水質(zhì)監(jiān)測和分析中的重要工具，其準確性和穩(wěn)定性對于保證監(jiān)測結果的可靠性至關重要。以下是一份關于溶氧電極校準與維護的實用指南，旨在幫助用戶更好地使用和保養(yǎng)溶氧電極。<br /> </div><div>　　一、溶氧電極校準<br /> </div><div>　　校準準備<br /> </div><div>　　準備兩種已知濃度的溶解氧標準溶液，例如空氣飽和水和零氧水，或選擇市售的溶解氧校準液(如2% Na2SO3溶液作為零點校準液，4M KCl溶液或50%甲醇溶液作為量程校準液)。<br /> </div><div>　　檢查電極狀態(tài)，確保電極頭清潔無損傷。<br /> </div><div>　　校準步驟<br /> </div><div>　　零點校準：將溶氧電極浸入零氧校準液中，確保電極頭完全浸沒，并攪拌液體使其充分接觸。等待電極穩(wěn)定后，記錄電極讀數(shù)，并使用校準裝置或儀器上的相關功能進行零點校正。<br /> </div><div>　　滿量程校準：將溶氧電極浸入空氣飽和水或已知濃度的溶解氧校準液中，同樣確保電極頭完全浸沒并攪拌。等待電極穩(wěn)定后，記錄電極讀數(shù)，并進行滿量程校正。<br /> </div><div>　　溫度補償：由于溶解氧濃度與溫度有關，因此在校準過程中應進行溫度補償。根據(jù)校準液的溫度和電極讀數(shù)，使用校準裝置或儀器上的溫度補償功能進行相應的修正。<br /> </div><div>　　校準注意事項<br /> </div><div>　　校準過程中應避免交叉污染和誤操作。<br /> </div><div>　　應保持校準液的質(zhì)量和濃度穩(wěn)定，避免使用過期或質(zhì)量不佳的校準液。<br /> </div><div>　　校準應由經(jīng)過培訓和熟悉操作的專業(yè)技術人員執(zhí)行，以確保校準結果的準確性。<br /> </div><div>　　二、溶氧電極維護<br /> </div><div>　　日常清潔<br /> </div><div>　　溶氧電極應定期清洗，以保持電極頭的清潔和敏感性。<br /> </div><div>　　清潔時應使用清水沖洗電極頭，如果污垢無法洗掉，可使用軟布或棉布小心擦洗。<br /> </div><div>　　注意不要損壞電極頭的隔膜，以免影響測量準確性。<br /> </div><div>　　電解液更換<br /> </div><div>　　電解液是溶氧電極的重要組成部分，其性能會隨時間而變化。<br /> </div><div>　　建議每三個月更換一次電解液，或根據(jù)電極信號異常(如響應時間長、無氧介質(zhì)中電流增加等)時更換。<br /> </div><div>　　更換電解液時，應確保新電解液的質(zhì)量和濃度符合要求，并按照說明書正確操作。<br /> </div><div>　　電極再生<br /> </div><div>　　當測量范圍無法調(diào)整時，需要對溶氧電極進行再生。<br /> </div><div>　　電極再生包括更換內(nèi)部電解液、更換隔膜、清洗銀電極等步驟。<br /> </div><div>　　如果觀察到銀電極被氧化，可用細砂紙打磨。<br /> </div><div>　　再生后，電極需要重新極化和校準。<br /> </div><div>　　極化與校準<br /> </div><div>　　溶氧電極在連接儀表上電后，需要在使用或連續(xù)斷電5~10分鐘以上時進行極化。<br /> </div><div>　　極化過程需要6個小時以上，以確保電極中的化學體系平衡，降低零氧電流，穩(wěn)定電極。<br /> </div><div>　　極化后，應進行校準以確保測量準確性。<br /> </div><div>　　存放與保護<br /> </div><div>　　當溶氧電極不使用時，應將其存放在干燥、陰涼的地方，避免陽光直射和高溫。<br /> </div><div>　　如果電極長時間不使用，應取出電解液并清洗干凈電極頭，然后套上保護帽存放。<br /> </div><div>　　綜上所述，<strong>溶氧電極</strong>的校準與維護是保證其準確性和穩(wěn)定性的關鍵。通過遵循上述指南，用戶可以更好地使用和保養(yǎng)溶氧電極，從而確保水質(zhì)監(jiān)測和分析結果的可靠性。</div> </div> <div id="szcvma5v" class="ny_PrevNext"> <div id="szcvma5v" class="Prev">上一篇：沒有了</div> <div id="szcvma5v" class="Next">下一篇： <a href="/Article-3916745.html">COD在線分析儀適用于哪些應用場景？</a></div> </div> </div> </div> </div> </div>   <div id="szcvma5v" class="pc_foot"> <div id="szcvma5v" class="pc_ft_main w1200 clear"> <div id="szcvma5v" class="ft_list"> <ul> <li><b>關于我們</b><a href="/aboutus.html">公司簡介</a><a 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