溶氧電極使用檢查報(bào)告說明-上海植茂環(huán)?？萍加邢薰?/title> <link rel="stylesheet" type="text/css" href="/skins/290838/css/style.css"> <link rel="stylesheet" type="text/css" href="/skins/290838/css/swiper.min.css"> <script src="/skins/290838/js/jquery-3.6.0.min.js"></script> <script src="/skins/290838/js/swiper.min.js"></script>  <script type="text/javascript"> document.addEventListener("touchstart", function () { }, true); </script>  <script language="javascript" type="text/javascript"> var nav= '5'; </script>  <link rel="shortcut icon" href="/Skins/290838/favicon.ico" /> <link rel="canonical" href="http://www.qdjlst.com/"/> <script src="http://msite.baidu.com/sdk/c.js?appid=1608313242543244"></script> <script type="application/ld+json"> { "@context": "https://ziyuan.baidu.com/contexts/cambrian.jsonld", "@id": "http://www.qdjlst.com/Article-2818252.html", "appid": "1608313242543244", "title": "溶氧電極使用檢查報(bào)告說明", "pubDate": "2021-10-25T14:50:57", "upDate": "2021-10-25T14:50:57" }</script> <script 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r液體中的氧透過半透膜到達(dá)陰極，兩極之間就產(chǎn)生電子流動(dòng)，產(chǎn)生電流。氧濃度越大電流越強(qiáng)，溶氧濃度就變成電訊號(hào)，經(jīng)過放大可以在顯示儀或記錄儀上顯示出來。<br /> </div><div>　　經(jīng)常有遇到使用溶氧電極的用戶，在談到溶氧電極使用過程中，關(guān)于零點(diǎn)校驗(yàn)的問題，發(fā)現(xiàn)大家有不少有爭議的做法在里面。特舉例說明一下：<br /> </div><div>　　1、首先要明確的是，目前在細(xì)菌發(fā)酵和細(xì)胞培養(yǎng)罐子當(dāng)中使用的溶氧電極，它測的是一個(gè)氧氣的相對(duì)值，有兩家大的供應(yīng)商，梅特勒和哈美頓，這兩家公司提供的溶氧電極，在測這種氧含量相對(duì)值的工況使用條件下，是采用的零點(diǎn)固化技術(shù)，是不用校驗(yàn)零點(diǎn)的，只要在空氣中校滿度100%，或者在料液當(dāng)中校滿度就可以了。(目前這種觀念，已經(jīng)被絕大多數(shù)客戶所接受)<br /> </div><div>　　2、現(xiàn)實(shí)當(dāng)中，偶爾會(huì)遇到一些客戶，在高溫121度滅菌的一個(gè)高溫節(jié)點(diǎn)當(dāng)中，認(rèn)為這個(gè)時(shí)候，全是高溫水蒸汽，這個(gè)時(shí)候，氧含量為零，所以在這個(gè)節(jié)點(diǎn)上校零點(diǎn)，我們認(rèn)為是不準(zhǔn)確的，不合適的。因?yàn)榭蛻舻囊罁?jù)是這個(gè)時(shí)候，上位機(jī)讀數(shù)為零，所以我就按零點(diǎn)校驗(yàn)鍵。那么實(shí)際上，這時(shí)候水蒸汽里面的氧分壓，并不是零喲！另一方面，溶氧電極的測量讀數(shù)是在0到80度的的區(qū)間段在呈線性關(guān)系。超過80度后，讀數(shù)本身是不正確的，有的儀表就是干脆直接顯示為零。<br /> </div><div>　　3、還有一些客戶，是在飽和無水亞硫酸鈉水溶液中，測零點(diǎn)校零點(diǎn)，實(shí)際上，也是不準(zhǔn)確的，因?yàn)樗荒軌蜃龅矫撗?。而真正地?shí)用價(jià)值在于觀察一下氧飽和度的下降速度，從而判斷一下這支溶氧電極靈敏不靈敏，倒是真的有用，也此也建議大家校完滿度后，用無水亞硫酸飽合溶液檢查一下下降曲線。<br /> </div><div>　　4、如果客戶一定要校零點(diǎn)，我們推薦是用純氮?dú)狻?實(shí)際上只在制水，電廠鍋爐水中會(huì)涉及到零點(diǎn)校驗(yàn))<br /> </div><div>　　5、還有就是斷電法，就是把<strong>溶氧電極</strong>從電線中取出來，讀數(shù)為零，進(jìn)行校驗(yàn)。也是一種方法。<br /> </div><div>　　總之，發(fā)酵及細(xì)胞培養(yǎng)過程中，不用再校零點(diǎn)了。</div> </div> <div id="m0wuomu" class="ny_PrevNext"> <div id="m0wuomu" class="Prev">上一篇： <a href="/Article-2831923.html">玻碳電極的維護(hù)保養(yǎng)</a></div> <div id="m0wuomu" class="Next">下一篇： <a href="/Article-2816619.html">哈希cod消解器安全可靠、節(jié)省能耗</a></div> </div> </div> </div> </div> </div>   <div id="m0wuomu" class="pc_foot"> <div id="m0wuomu" class="pc_ft_main w1200 clear"> <div id="m0wuomu" class="ft_list"> <ul> <li><b>關(guān)于我們</b><a href="/aboutus.html">公司簡介</a><a href="/news.html">新聞動(dòng)態(tài)</a><a href="/article.html">技術(shù)文章</a></li> 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