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href="/article.html">技術(shù)文章</a> > <span>溶氧儀功能特性存在哪些價(jià)值？</span></p> </div>   <div id="7mxfkil" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">溶氧儀功能特性存在哪些價(jià)值？</h1> <div id="17nlzzf" class="NyNewsdetail_tips">更新時(shí)間：2021-03-04 點(diǎn)擊次數：1486</div> <div id="w8vibbg" class="NyNewsdetail_con"> <div>　　<a href="http://www.tianhualian.com.cn/ParentList-432782.html" target="_blank">溶氧儀</a>采用創(chuàng )新的熒光法替代傳統的膜式電極,不用更換膜片和電解液,從而減少維護工作量,提高了工作可靠性,特別適用于污水處理領(lǐng)域惡劣的工況。此外,熒光法傳感器不消耗氧氣,所以沒(méi)有流速和攪動(dòng)的要求,也不受硫化物等物質(zhì)的干擾。溶氧儀主要適用于水及污水處理(污水廠(chǎng)曝氣池、電廠(chǎng)水處理)、水環(huán)境監測(河流、湖泊、海水、漁場(chǎng)等)等場(chǎng)合。<br /> </div><div>　　檢測原理:溶氧儀基于物理學(xué)中特定物質(zhì)對活性熒光的“猝熄”原理,可檢測水中溶解氧濃度或氧分壓。測量傳感器前端由兩個(gè)發(fā)光二極管(分別發(fā)射紅光和藍光)、光電探測器,和熒光帽組成。熒光帽前端的熒光物質(zhì)是一種特殊的釕金屬化合物,熒光物質(zhì)涂覆在允許氣體分子通過(guò)的聚酯箔片下方,聚酯箔片上表面涂了一層黑色的隔光材料,以避免日光和水中其它熒光物質(zhì)的干擾。工作時(shí),調制的藍光照到熒光物質(zhì)上,熒光物質(zhì)受到激發(fā)產(chǎn)生紅色熒光。由于氧分子的“猝熄”作用,激發(fā)的熒光強度和時(shí)間與氧濃度相關(guān);氧分子濃度越高,激發(fā)的熒光強度越低,產(chǎn)生的時(shí)間越短。激發(fā)的紅光被光電傳感器檢測到,并與參比光信號進(jìn)行比較,計算出相位差,與內部標定值比對,從而計算出氧分子濃度,經(jīng)過(guò)線(xiàn)性化和溫度補償,輸出zui終的氧濃度值。</div><p align="center"><img src="https://img79.chem17.com/9/20210304/637504746310095466832.jpg" alt="溶氧儀" width="500" height="426" align="middle" /></p><div><br /> </div><div>　　溶氧儀功能特性:<br /> </div><div>　　1、不受下列物質(zhì)的交叉干擾:H2S,PH,CO2,NH3,SO4,CL-,CL2等。<br /> </div><div>　　2、傳感器熒光帽使用壽命可達1年以上。<br /> </div><div>　　3、測量穩定,無(wú)漂移;<br /> </div><div>　　4、4~20mA隔離電流輸出,可選現場(chǎng)總線(xiàn)接口。<br /> </div><div>　　5、基本免維護。<br /> </div><div>　　6、在小量程表現良好(0ppm)。<br /> </div><div>　　7、帶數據記錄功能。<br /> </div><div>　　8、溶氧儀可選4個(gè)報警,一個(gè)清洗繼電器輸出。<br /> </div><div>　　9、不受“熱擾動(dòng)“影響”。<br /> </div><div>　　10、更高的分辨率和測量精度。<br /> </div><div>　　11、無(wú)須更換固態(tài)電極或膜/電解液。<br /> </div><div>　　12、不會(huì )因硫化物而“中毒”。<br /> </div><div>　　13、沒(méi)有流速、膠動(dòng)要求。<br /> </div><div>　　14、中文菜單和簡(jiǎn)便的按鍵操作。</div> </div> <div id="hvp2oqe" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-2596145.html">如何確定溶氧儀測量是否準確呢?</a></li> <li>下一篇：<a href="/Article-2554762.html">談?wù)勅苎鮾x的選擇及其電極維護</a></li> </ul> </div> </div>   <div id="7ftn1jh" class="ly_foot"> <div id="idwosmf" class="ly_Ftmain"> <div id="3atnbzr" class="ly_FtLeft"> <div id="4jshvu3" class="Ft_nav"><a href="/">首頁(yè)</a><a href="/aboutus.html" target="_blank">關(guān)于我們</a><a href="/products.html" target="_blank">產(chǎn)品展示</a><a href="/news.html" target="_blank">新聞中心</a><a href="/article.html" target="_blank">技術(shù)文章</a><a href="/honor.html" target="_blank">榮譽(yù)資質(zhì)</a></div> <div id="vz2yux5" class="Ft_contact"> <div id="2ys86wq" 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