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<img src="/skins/257424/images/home.png"> <p>當前位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > <span>PH計電極球泡碎了怎么辦？</span></p> </div>   <div id="sq82xwe7wu" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">PH計電極球泡碎了怎么辦？</h1> <div id="sq82xwe7wu" class="NyNewsdetail_tips">更新時間：2018-03-14 點擊次數(shù)：2799</div> <div id="sq82xwe7wu" class="NyNewsdetail_con" id="c_detail_wrap"> <p><span style="font-size:16px"><span style="font-family:arial">P</span></span><span style="font-size:12pt">H電極</span><span style="font-size:12pt">又稱pH探頭、PH傳感器，英文名稱PH electrode或PH sensor，是PH計上與被測物質(zhì)接觸的部分，用來測電極電位的裝置。</span></p><p><span style="font-size:12pt">一套工業(yè)在線pH測量系統(tǒng)通常由pH傳感器即pH電極、pH變送器、電極護套及電纜等四部分構(gòu)成。</span></p><p><span style="font-size:12pt">電極的玻璃球泡破碎主要原因是碰撞，擠壓等外力所致。電極球泡的承受壓力一般≤0.6MPa，常見的是在測量時把電極當攪棒攪拌，在使用中的清洗，擦干，蓋帽等過程要仔細，否則也容易用力過度而造成破碎。碎了之后，這支電極估計就無法使用了，得重新選配電極了。</span></p><p><span style="font-size:12pt">那平時電極該如何保護呢？</span></p><p><span style="font-size:12pt">1、電極應(yīng)貯藏在10℃~30℃的干燥環(huán)境中。</span></p><p><span style="font-size:12pt">2、在溫度低于-5℃時，由于緩沖液和電解液凍結(jié)，則電極有可能破裂。</span></p><p><span style="font-size:12pt">3、由于運輸?shù)脑?，當使用電極時，須觀察敏感膜泡內(nèi)是否充滿溶液，若膜泡內(nèi)有氣泡，須將膜泡朝下輕輕甩幾下(像甩體溫表)使膜泡內(nèi)充滿溶液。</span></p><p><span style="font-size:12pt">4、如果pH 電極貯藏在干燥條件下，則使用前必須浸泡24小時，否則難于校準。</span></p><p><span style="font-size:12pt">5、當不用電極帽子時，電極須放在緩沖液中，不要放在蒸餾水中。</span></p><p><span style="font-size:12pt">6、每支電極都需要校準，才能與pH表配合使用，對pH電極要進行二點校準，校準時要使用標準緩沖液，(pH6.86、pH4.00或pH9.18)。</span></p><p><span style="font-size:12pt">7、準或檢查測量電極的頻度，取決于不同的應(yīng)用條件(應(yīng)用場合的臟污程度，化學(xué)物質(zhì)的沉積等)。</span></p><p><span style="font-size:12pt">該如何清洗電極？</span></p><p><span style="font-size:12pt">若電極球泡或隔膜被堵塞、污染，可用下列試劑清洗：</span></p><p><span style="font-size:12pt">1、脂和含油物，可用表面活性劑清洗；</span></p><p><span style="font-size:12pt">2、鈣沉淀物和金屬氫氧化物，可用10%的稀鹽酸清洗；</span></p><p><span style="font-size:12pt">3、硫化物沉淀(如污水處理過程中)，可用10%的稀鹽酸和飽和硫脲的混合物清洗；</span></p><p><span style="font-size:12pt">4、蛋白質(zhì)附著物(如食品工業(yè)中)，可用10%的稀鹽酸飽和胃蛋白酶的混合物清洗；</span><br /><span style="font-size:12pt">5、響應(yīng)遲緩的pH電極再生時，可用10%的HNO3和NH4F(50g/1)的混合物。</span></p> </div> <div id="sq82xwe7wu" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/jsshengaohua-Article-1482047/">懸浮物是什么？</a></li> <li>下一篇：<a href="/jsshengaohua-Article-1480996/">便攜式COD測定儀，方便攜帶，是現(xiàn)場測量的好幫手</a></li> </ul> </div> </div>   <div id="sq82xwe7wu" class="foot_box"> <div id="sq82xwe7wu" class="footCon"> <div id="sq82xwe7wu" class="foot_t w1300"> <div id="sq82xwe7wu" class="foot_lv"> <div id="sq82xwe7wu" class="foot_logo"><img src="/skins/257424/images/foot_logo.png" /></div> <div id="sq82xwe7wu" class="foot_nav"> <ul> <li><a href="/">首頁</a></li> <li><a href="/products.html">產(chǎn)品中心</a></li> <li><a href="/aboutus.html" rel="nofollow">關(guān)于我們</a></li> <li><a href="/news.html">新聞中心</a></li> <li><a href="/article.html">技術(shù)文章</a></li> <li><a href="/contact.html" rel="nofollow">聯(lián)系我們</a></li> </ul> 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