GASTEC便携式防爆乙醛浓度检测管式检测仪测毒�?参数-价格-中国粉体罐�/title>

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<p><strong>GASTEC乙醛<strong>检测管</strong>CH<sub>3</sub>CHO</strong></p><p>乙醛检测管是一根密封的细长玻璃管，因为填充有特定的试剂和着色剂而呈现特定的颜色，当含有乙醛的气体样品进入检测管后，会发生化学变化，从而引起颜色的变化。观察颜色变化的界限对应的刻度，即是被测样品中的乙醛的浓度、�/p><h1><span>技术参�?/span></h1><table align="center" cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><colgroup><col/><col/></colgroup><tbody><tr><td><p>检测范図�/p></td><td><p>2.5 -5 ppm</p></td><td><p>2.5 -5 ppm</p></td><td><p>5 -100 ppm</p></td></tr><tr><td><p>抽气次数</p></td><td><p>2</p></td><td><p>2</p></td><td><p>1</p></td></tr><tr><td><p>修正系数</p></td><td><p>1/2</p></td><td><p>1/2</p></td><td><p>1</p></td></tr><tr><td><p>取样时间</p></td><td><p>1.5 分钟每次</p></td><td><p>1.5 分钟每次</p></td><td><p>1.5 分钟每次</p></td></tr><tr><td><p>检测限�?/p></td><td><p>0.25 ppm (n=2)</p></td><td><p>0.25 ppm (n=2)</p></td><td><p>0.25 ppm (n=2)</p></td></tr><tr><td><p>颜色变化</p></td><td><p>黄色→红艱�/p></td><td><p>黄色→红艱�/p></td><td><p>黄色→红艱�/p></td></tr><tr><td><p>反应原理</p></td><td><p>3CH3CHO + (NH2OH)3H3PO4 � H3PO4</p></td><td><p>3CH3CHO + (NH2OH)3H3PO4 � H3PO4</p></td><td><p>3CH3CHO + (NH2OH)3H3PO4 � H3PO4</p></td></tr><tr><td><p>反应原理</p></td><td><p>H3PO4 +指示� � 磷酸盏�/p></td><td><p>H3PO4 +指示� � 磷酸盏�/p></td><td><p>H3PO4 +指示� � 磷酸盏�/p></td></tr><tr><td><p>误差</p></td><td><p>10% (5 -20 ppm)� 5% ( 20-100 ppm)</p></td><td><p>10% (5 -20 ppm)� 5% ( 20-100 ppm)</p></td><td><p>10% (5 -20 ppm)� 5% ( 20-100 ppm)</p></td></tr><tr><td><p>保存朞�/p></td><td><p>2 平�/p></td><td><p>2 平�/p></td><td><p>2 平�/p></td></tr><tr><td><p>温度湿度修正</p></td><td><p>不需修正</p></td><td><p>不需修正</p></td><td><p>不需修正</p></td></tr><tr><td><p>需10��C以下冷藏保存</p></td><td><p>需10��C以下冷藏保存</p></td><td><p>需10��C以下冷藏保存</p></td><td><p>需10��C以下冷藏保存</p></td></tr><tr><td><p>干扰及影哌�/p></td><td><p>干扰及影哌�/p></td><td><p>干扰及影哌�/p></td><td><p>干扰及影哌�/p></td></tr><tr><td><p>物质</p></td><td><p>浓度</p></td><td><p>影响</p></td><td><p>影响</p></td></tr><tr><td><p>�?/p></td><td></td><td></td><td></td></tr><tr><td><p>丙烯醚�/p></td><td><p>3/5 倌�/p></td><td><p>+</p></td><td><p>+</p></td></tr><tr><td><p>丙酮</p></td><td><p>2倌�/p></td><td><p>+</p></td><td><p>+</p></td></tr><tr><td><p>丁酮</p></td><td><p>6 倌�/p></td><td><p>+</p></td><td><p>+</p></td></tr><tr><td><p>甲基异丁基酮</p></td><td><p>10 倌�/p></td><td><p>+</p></td><td><p>+</p></td></tr></tbody></table><h1><span><strong>选型指南</strong></span></h1><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><colgroup><col/><col/><col/></colgroup><tbody><tr><td colspan="22"><p><span>被检测物质名�?/span></p></td><td colspan="10" rowspan="2"><p><span>检测管型号及名�?/span></p></td><td colspan="7" rowspan="2"><p><span>检测范図�/p><p>(ppm)</span></p></td><td colspan="5" rowspan="2"><p><span>抽气次数</span></p></td><td colspan="9"><p><span>颜色变化</span></p></td><td colspan="3" rowspan="2"><p><span>有效朞�/p><p>（年（�/span></p></td><td colspan="4" rowspan="2"><p><span>备注</span></p></td><td colspan="9"><p><span>职业卫生管理标准</span></p></td></tr><tr><td colspan="13"><p><span>英文名称</span></p></td><td colspan="9"><p><span>中文名称</span></p></td><td colspan="5"><p><span>初始颜色</span></p></td><td colspan="4"><p><span>变色</span></p></td><td colspan="5"><p><span>中国PC-TWA</p><p>(mg/m<sup>3</sup>)</span></p></td><td colspan="4"><p><span>美国 TLV-TWA</p><p>(ppm)</span></p></td></tr><tr><td colspan="13" rowspan="3"><p><span>Acetaldehyde</p><p>CH<sub>3</sub>CHO</span></p></td><td colspan="9" rowspan="3"><p><span>乙醛</span></p></td><td colspan="4"><p><span>92</span></p></td><td colspan="6"><p><span>乙醛</span></p></td><td colspan="7"><p><span>300-750</p><p>10-300</p><p>5-10</span></p></td><td colspan="5"><p><span>1</p><p>①�/p><p>4</span></p></td><td colspan="5"><p><span>黄色</span></p></td><td colspan="4"><p><span>红色</span></p></td><td colspan="3"><p><span>2*</span></p></td><td colspan="4"></td><td colspan="5" rowspan="3"><p><span>MAC 45</span></p></td><td colspan="4" rowspan="3"><p><span>C 25</span></p></td></tr><tr><td colspan="4"><p><span>92M</span></p></td><td colspan="6"><p><span>乙醛</span></p></td><td colspan="7"><p><span>5-100</p><p>2.5-5</span></p></td><td colspan="5"><p><span>⑟�/p><p>2</span></p></td><td colspan="5"><p><span>黄色</span></p></td><td colspan="4"><p><span>红色</span></p></td><td colspan="3"><p><span>2*</span></p></td><td colspan="4"></td></tr><tr><td colspan="4"><p><span>92L</span></p></td><td colspan="6"><p><span>乙醛</span></p></td><td colspan="7"><p><span>1-20</span></p></td><td colspan="5"><p><span>1</span></p></td><td colspan="5"><p><span>黄色</span></p></td><td colspan="4"><p><span>褐色</span></p></td><td colspan="3"><p><span>2*</span></p></td><td colspan="4"><p><span>T</span></p></td></tr></tbody></table><p><span><strong>T９�/strong>温度修正 <strong>H９�/strong>湿度修正 <strong>+９�/strong>双管 <strong>++９�/strong>9 支检测管 <strong>* ９�/strong>冷藏保存</span></p><p><span><strong>深色 : </strong>需使用修正系数或修正表LB/MMCF=Pound/Million Cubic Feet(1mg/L=62.3LB/MMCF)</span></p><p><span><strong>�?９�/strong>高湿度下或许会变为紫色、�strong>P９�/strong>需使用热解� No.840 � GASTEC 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