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      <div class="bd"><span>热门关键词：</span>哈希水质分析仪，氨氮分析仪，cod分析仪，浊度仪，bod分析仪，溶解氧分析仪</div>
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       <h1 class="ny_newsdetail_title">BOD测定仪的使用方法</h1>
       <div class="ny_newsdetail_tips">更新时间：2014-12-17&nbsp;&nbsp;|&nbsp;&nbsp;点击率：2635</div>
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          &nbsp;<span style="font-size: 12px;">&nbsp; &nbsp; <strong><a href="http://www.shzm17.com/">BOD测定仪</a></strong>的使用方法</span><div>　　⑴ <strong>BOD测定仪</strong>空白值的测定</div><div>　　① 开启电源，按&ldquo;空白/样品&rdquo;键，选择空白测定。</div><div>　　② 将已回流消解好的空白消解杯置于搅拌器上，放入干净的搅拌子，将已准备好的电极头置于消解杯，连接电极。然后调节搅拌器调节电位器，选择适当的搅拌速度(电解液起旋，但无气泡)。</div><div>　　③ 按&ldquo;电流设置&rdquo;键，根据所测样品的COD值大小选择电解电流值。一般测定饮用水和清洁江河水选用10mA，一般的工业污水选择20mA，而对于COD值较高的工业污水可选用40mA。</div><div>　　④ 按&ldquo;启动&rdquo;键，仪器自动电位补偿后，电解指示灯亮，仪器开始电解并作信号-时间图，这时电解产生的Fe2+滴定K2Cr2O7。到终点后，蜂鸣器报警，电解电流自动切断，显示空白COD值。</div><div>　　⑵<strong> BOD测定仪</strong>样品的测定</div><div>　　① 按&ldquo;空白/样品&rdquo;键，使仪器进入样品的测定</div><div>　　② 若空白进行多次测定，可自行算出其平均值，按&ldquo;空白设定&rdquo;键，然后用数字键输入空白值，按&ldquo;确认&rdquo;键予以确认</div><div>　　③ 将消解好的样品消解杯置于搅拌器上，电极用蒸馏水冲净后置于消解杯中，搅拌。按&ldquo;体积设定&rdquo;键，送入样品体积，按&ldquo;确认&rdquo;键确认。</div><div>　　④ 按&ldquo;启动&rdquo;键，仪器自动电位补偿后，电解指示灯亮，并作信号-时间图。到终点后，蜂鸣器报警，电解电流自动切断，显示样品COD值(如样品经过稀释，结果必须乘以稀释倍数)。</div><div>　　⑤ <strong>BOD测定仪</strong>测定下一个样品时，只须将冲洗净的电极头置入消解好的样品中，若取样量有变可重新输入样品体积，不变，直接按下&ldquo;启动&rdquo;键，仪器自动进行测定。</div><div>　　</div>
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