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26px;"><strong>在線(xiàn)COD檢測儀測量原理</strong></span></p><p style="color: rgb(51, 51, 51); font-family: sans-serif, Arial, Verdana, "Trebuchet MS"; font-size: 13px; white-space: normal;"><span style="font-size: 26px;"><strong>品牌：青島路博</strong></span></p><p style="color: rgb(51, 51, 51); font-family: sans-serif, Arial, Verdana, "Trebuchet MS"; font-size: 13px; white-space: normal;"><span style="font-size: 26px;"><strong>型號:LB系列</strong></span></p><p style="color: rgb(51, 51, 51); font-family: sans-serif, Arial, Verdana, "Trebuchet MS"; font-size: 13px; white-space: normal;"><span style="font-size: 26px;"><strong>廠(chǎng)家直銷(xiāo)，技術(shù)上門(mén)服務(wù)</strong></span></p><p style="color: rgb(51, 51, 51); font-family: sans-serif, Arial, Verdana, "Trebuchet MS"; font-size: 13px; white-space: normal;"> <img alt="" src="http://img78.chem17.com/9/20201205/637427835722167971395.jpg" style="cursor: default; width: 500px;"/></p><p style="color: rgb(51, 51, 51); font-family: sans-serif, Arial, Verdana, "Trebuchet MS"; font-size: 13px; white-space: normal;"> </p><p style="color: rgb(51, 51, 51); font-family: sans-serif, Arial, Verdana, "Trebuchet MS"; font-size: 13px; white-space: normal;"><span style="color: rgb(0, 0, 0); font-family: 微軟雅黑; font-size: 14px;"><span style="font-size: 16px;"><strong>COD檢測儀測量原理</strong></span></span></p><p style="color: rgb(51, 51, 51); font-family: sans-serif, Arial, Verdana, "Trebuchet MS"; font-size: 13px; white-space: normal;"><span style="font-family: 微軟雅黑;"><span style="font-size: 16px;">樣品、重鉻酸鉀消解溶液、硫酸銀溶液（硫酸銀作為催化劑加入可以更有效地氧化直鏈脂肪化合物）、以及濃硫酸的混合液加熱到165℃，重鉻酸鉀被水中有機物還原為三價(jià)鉻，在特定波長(cháng)下測定三價(jià) 鉻含量，再根據三價(jià)鉻離子的量換算出消耗氧的質(zhì)量濃度（消耗的重鉻酸離子量相應于可氧化的有機物量）計算出 COD 值。還原性的無(wú)機物，例如亞硝酸鹽、硫化物和亞鐵離子，會(huì )提高測量結果，它們的耗氧量會(huì )加到 COD 值中。氯離子的干擾可以通過(guò)加入硫酸汞消除，因為氯離子能與汞離子形成非常穩定的。</span></span></p><p style="color: rgb(51, 51, 51); font-family: sans-serif, Arial, Verdana, "Trebuchet MS"; font-size: 13px; white-space: normal;"><span style="color: rgb(0, 0, 0); font-family: arial; font-size: 16px;"><span style="font-family: 微軟雅黑;"><strong>儀器參數</strong></span></span><br/> </p><table width="511"><tbody><tr class="firstRow"><td style="" width="57"><p><span style="font-size: 11pt;">儀器參數</span></p></td><td style="" width="170"><p><span style="font-size: 11pt;">數據指標</span></p></td><td style="" width="138"><p><span style="font-size: 11pt;">參數說(shuō)明</span></p></td><td style="" width="55"><p><span style="font-size: 11pt;">測量方法</span></p></td><td style="" width="89"><p><span style="font-size: 11pt;">備注</span></p></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">測</span><span style="font-size: 10.5pt;">量范圍</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">10-20</span><span style="font-size: 10.5pt;">00.0 mg/L</span></p></td><td style="" width="138"><p><span style="font-size: 10.5pt;">可</span><span style="font-size: 10.5pt;">根據要求擴展或定制</span></p></td><td rowspan="12" style="" width="55"><p><span style="font-size: 11pt;">國家標準 GB11914-89《水質(zhì)-化學(xué)耗氧量測定-重鉻酸鉀》</span></p></td><td rowspan="12" style="" width="89"><p><span style="font-size: 11pt;">儀器異常自動(dòng)報；斷電數據自動(dòng)保存；7 英寸 6 萬(wàn)色 TFT 觸摸屏顯示及指令輸入；異常復位和斷電后來(lái)電，儀器自動(dòng)排出儀器內殘留反應物，自動(dòng)恢復工作狀態(tài)。</span></p></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">檢測限值</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">0.001mg/L</span></p></td><td style="" width="138"><br/></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">度</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">≥</span><span style="font-size: 10.5pt;">100mg/L 時(shí)，不超過(guò)±15%；＜100mg/L 時(shí)，不超過(guò)±5mg/L</span></p></td><td style="" width="138"><br/></td></tr><tr><td style="" width="57"><p> <span style="font-size: 10.5pt;">重現性</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">±</span><span style="font-size: 10.5pt;">5%</span></p></td><td style="" width="138"><br/></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">測</span><span style="font-size: 10.5pt;">量周期</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">測量周期為 35 分鐘</span></p></td><td style="" width="138"><br/></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">采</span><span style="font-size: 10.5pt;">樣周期</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">時(shí)</span><span style="font-size: 10.5pt;">間間隔（1～65530min 任意設定）和 24H 整點(diǎn)時(shí)間測量模式</span></p></td><td style="" width="138"><br/></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">校</span><span style="font-size: 10.5pt;">準周期</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">時(shí)</span><span style="font-size: 10.5pt;">間間隔（1～65530min 任意設定）和 24H 整點(diǎn)時(shí)間測量模式</span></p></td><td style="" width="138"><br/></td></tr><tr><td style="" width="57"><p> <span style="font-size: 10.5pt;">維護周期</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">每</span><span style="font-size: 10.5pt;">月一次</span></p></td><td style="" width="138"><p><span style="font-size: 10.5pt;">根</span><span style="font-size: 10.5pt;">據現場(chǎng)實(shí)際情況而定</span></p></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">信</span><span style="font-size: 10.5pt;">號輸出</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">標</span><span style="font-size: 10.5pt;">準 RS-232（RS485 可選）和 4～20mA（0～5V 輸出可選）</span></p></td><td style="" width="138"><br/></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">環(huán)</span><span style="font-size: 10.5pt;">境要求</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">溫</span><span style="font-size: 10.5pt;">度可調的室內，建議溫度+5～35℃；濕度≤90%（不結露）</span></p></td><td style="" width="138"><br/></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">電</span><span style="font-size: 10.5pt;">源</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">AC2</span><span style="font-size: 10.5pt;">20×（1±0.1）V，50×（1±0.05）Hz，10A</span></p></td><td style="" width="138"><br/></td></tr><tr><td style="" width="57"><p><span style="font-size: 10.5pt;">尺</span><span style="font-size: 10.5pt;">寸</span></p></td><td style="" width="170"><p><span style="font-size: 10.5pt;">長(cháng)</span><span style="font-size: 10.5pt;"> 600mm×寬 500×高 1500</span></p></td><td style="" width="170"><br/></td></tr></tbody></table><p style="color: rgb(51, 51, 51); font-family: sans-serif, Arial, Verdana, "Trebuchet MS"; font-size: 13px; white-space: normal;"> </p><p><br/></p> </div> <div id="fvkfg1sxx" class="pge_re"> <span>上一篇：<a href="/news/show448592.html">便攜式非甲烷總烴顆粒物油煙綜合檢測儀</a></span> <span>下一篇：<a href="/news/show449201.html">COD在線(xiàn)監測儀的性能特點(diǎn)</a></span> </div> <style type="text/css"> 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