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src="/skins/290838/images/position.png" />當(dāng)前位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 影響余氯檢測儀測量的因素分析</div> </div> <div id="ytmnq1nx" class="ny_content_bd"> <div id="ytmnq1nx" class="w1200 clear"> <div id="ytmnq1nx" class="ny_newsdetail clear"> <h1 class="ny_newsdetail_title">影響余氯檢測儀測量的因素分析</h1> <div id="ytmnq1nx" class="ny_newsdetail_tips">更新時間：2020-09-21 | 點擊率：3463</div> <div id="ytmnq1nx" class="ny_newsdetail_con"> <div>　　<strong>余氯檢測儀</strong>就是用于快速檢測余氯的儀器，儀器相當(dāng)于一臺小型的分光光度計，水樣經(jīng)與專門的試劑反應(yīng)后，通過分光光度方法計算出其余氯/總氯值。<br /> </div><div>　　余氯檢測儀的特點是將檢測過程需要用的試劑設(shè)計成專門的試劑包，而儀器本身也包含了標(biāo)準(zhǔn)曲線，使用者無需專業(yè)知識去調(diào)配試劑和制作曲線，能夠在幾分鐘內(nèi)準(zhǔn)確的檢測余氯的含量，能夠極方便企業(yè)快速的監(jiān)控水中余氯的含量。在測量中有很多因素會影響儀器的操作及度，以下總結(jié)了幾點主要的因素：<br /> </div><div>　　一、水樣<br /> </div><div>　　1.水樣的PH值：水樣的PH值在小于5或大于10的區(qū)間內(nèi)對余氯的測量有較大影響，在實際應(yīng)用中應(yīng)盡量避免在此區(qū)間內(nèi)使用；<br /> </div><div>　　2.水樣的溫度：一般認(rèn)為，溫度每升高1℃，測量值將會增加5%左右，理想的水樣溫度應(yīng)在15~20℃之間；<br /> </div><div>　　3.水樣的氨氯濃度：在實際應(yīng)用中會發(fā)現(xiàn)，加氯量提高，水樣的余氯會降低，再增加時又會升高，這就是我們常說的折點加氯，這是由于水中氨氮濃度偏大，氯氣在水中和氨氮產(chǎn)生化學(xué)反應(yīng)引起的，水源一年四季中氨氮濃度會有所不同，所以對余氯測量的影響也會有所不同；<br /> </div><div>　　4.壓力與流速：壓力過大或過小，流速過快或過慢都會使水樣中的次氯酸得不到及時補(bǔ)充而降低靈敏度。<br /> </div><div>　　二、取樣點<br /> </div><div>　　取樣點應(yīng)選擇在投加點后10~20倍管道直徑處，以保證氯氣投加后混合充分，同時應(yīng)保證管道中不會有影響測量的氣泡存在。<br /> </div><div>　　三、取樣管路<br /> </div><div>　　1.金屬管路在高余氯的情況下長期使用會銹蝕，管道中的鐵銹會降低余氯濃度，同時鐵銹吸附在傳感器表面也會影響測量精度，因此，取樣管路的材料應(yīng)盡量采用非金屬管路；<br /> </div><div>　　2.取樣管路的長度不應(yīng)太長，若不得不很長時，應(yīng)在盡量靠近余氯檢測儀處加裝旁通管路，且旁通閥應(yīng)盡量開大；<br /> </div><div>　　3.應(yīng)在余氯檢測儀和自動加氯機(jī)的軟件設(shè)置中采取相應(yīng)的措施。</div> </div> <div id="ytmnq1nx" class="ny_PrevNext"> <div id="ytmnq1nx" class="Prev">上一篇： <a href="/Article-2386243.html">COD在線分析儀的結(jié)構(gòu)特點及功能優(yōu)勢</a></div> <div id="ytmnq1nx" class="Next">下一篇： <a href="/Article-2375870.html">低濃度溶氧計使用注意事項及故障檢查</a></div> </div> </div> </div> </div> </div>   <div id="ytmnq1nx" class="pc_foot"> <div id="ytmnq1nx" 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