2B 405 nm NO2/NO/NOx分析�?参数-价格-中国粉体罐�/title>

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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p><span>2B 405 nm NOx </span><span>分析仪（”nm”是代指纳米和“NOx Monitor”）主要用于测量大气中的NO<sub>2</sub>、NO和总的活性氧化氮（NOx = NO + NO2），可准确测�?~10000 ppb �?~10 ppm）的NO<sub>2</sub>�?~2000 ppb�?~2 ppm）的NO和NO<sub>X</sub>。该设备通过测量�?05nm处的吸收值确定NO<sub>2</sub>含量，通过NO与臭氧（O<sub>3</sub>）高度选择性反应的100%高效选择转化来测定NO，而总的NO<sub>X</sub>是NO与NO<sub>2</sub>的加� 、�/span></p><p><span>以往的化学发光仪器测定NO<sub>2</sub>时，先要将NO<sub>2</sub>通过钼或者光解将其转换为NO，而这个过程的转化效率高度可变�?B 405 NO<sub>X</sub>分析仪通过直接吸收来测定测定NO<sub>2</sub>，类似于臭氧分析仪。因为NO<sub>2</sub>的吸收截面远低于臭氧，所以微型怀特池来产生大�?m的吸收路径，从而达到与臭氧相似的敏感性。选用405nm波长是因为在大气中没有发现其它种类的气体在这个波长有显著吸收，这使得模式405nm对NO<sub>2</sub>具有极端的选择性、�/span></p><p><span>虽然我们�?B 410 NO分析仪结合我们的模式401 NO<sub>2</sub>转化器可以测量NO和NO<sub>x</sub>� 但是模式405nm 因为可以直接测量，而且需要更少的电力，因而是测量NO<sub>2</sub>�?*方法，同时它还能准确测量NO、�/span></p><p><strong><span>技术原琅�/span></strong></p><p><span>紫外光谱吸收泔�/span></p><p><span>�?是模�?05 nm NOx 分析仪的简单工作示意图。空气样品通过一个空气泵以约3 L/min的流速连续的抽进仪器。洗涤器阀会交替打开和关闭，从而绕过或者送样品空气通过NO<sub>2</sub>洗涤器，从而去掉样品中所有的NO<sub>2</sub>气体，这样仪器就可以测定NO<sub>2</sub>出现时候的光强度（I）和没有NO<sub>2</sub>时候的光强度（Io）。根据比尔~朗伯定律就可以利用I和Io值计算出NO<sub>2</sub>的浓度、�/span></p><p><span></span></p><p><span>根据下面的反应，NO加入臭氧会转化为NO<sub>2</sub>。NO的测量是绕过NO<sub>2</sub>洗涤器，通过测量加臭氧（I）和不加臭氧（Io）时的光强度来测定、�/span></p><p><span>NO + O3 � NO2 + O2</span></p><p><span>就像我们以前的臭氧分析仪和模�?10 NO分析仪一样，全氟磺酸管用于在I � Io 测定过程中平衡湿度，从而消除由于水汽干扰造成的折射效益、�/span></p><p><span>NO<sub>x</sub></span><span>的测定是通过加和NO<sub>2</sub>和NO的测定结果而得到的。此设备可以用于连续测定NO<sub>2</sub>，或者连续测定NO模式，还可以NO<sub>2</sub>和NO�?0s轮流测量模式、�/span></p><p><strong><span>性能指标</span></strong></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td><p><span>测量模式</span></p></td><td><p><span>仅NO<sub>2</sub>；仅NO；NO<sub>2</sub>、NO和NO<sub>x</sub>均测</span></p></td></tr><tr><td><p><span>线性动态范図�/span></p></td><td>0~10�?00 ppb (0~10 ppm); 0~2�?00 ppb (0~2 ppm) for NO and NOx</td></tr><tr><td><p><span>分辨玆�/span></p></td><td><p><span>0.1 ppb </span></p></td></tr><tr><td><p><span>精度(1��; rms noise) </span></p></td><td><p><span>20s </span><span>平均时，2.5 ppb � 2.5%的读数，以数大者为凅�/span></p><p><span>60s </span><span>平均时，1.8 ppb � 1.8%的读数，以数大者为凅�/span></p></td></tr><tr><td><p><span>准确�?/span></p></td><td><p><span>2.5ppb</span><span>或者读数的2.5%</span><span>，以数大者为凅�/span></p></td></tr><tr><td><p><span>检出限<span>＇�/span><span>2�� </span><span>（�/span></p></td><td><p><span>20s</span><span>平均�?.0 ppb�?min 平均�?.5 ppb </span></p></td></tr><tr><td><p><span>响应时间�?00%响应</span></p></td><td><p><span>20s</span><span>平均</span><span>条件下为40s响应 </span></p></td></tr><tr><td><p><span>平均时间</span></p></td><td><p><span>单气体测量模式： 20 s� 1 min� 5 min� 1 hr：�/span></p><p><span>多气体测量模�?NO� NO2 & NOx)�?0 s</span></p></td></tr><tr><td><p><span>内部数据存储容量</span></p></td><td><p><span>8�?92</span><span>行数� (20 s avg. = 1.9�? 1 min avg = 5.7�? 5 min avg = 1.0朇� 1 hr avg = 0.94 �?; SD卡没有容量限刵�/span></p></td></tr><tr><td><p><span>浓度单位</span></p></td><td><p><span>ppb� ppm� pphm </span></p></td></tr><tr><td><p><span>压力单位</span></p></td><td><p><span>mbar� torr </span></p></td></tr><tr><td><p><span>温度单位</span></p></td><td><p><span>��C� K </span></p></td></tr><tr><td><p><span>温度和压力校凅�/span></p></td><td><p><span>月�/span></p></td></tr><tr><td><p><span>操作温度范围</span></p></td><td><p><span>10 ~ 50 ��C </span></p></td></tr><tr><td><p><span>操作高度</span></p></td><td><p><span>�?~30 km (~30~1000 mbar) </span></p></td></tr><tr><td><p><span>电力需汁�/span></p></td><td><p><span>11~14 V </span><span>直流电或�?20/240 V 交流电， 2.2 A at 12 V� 26W</span></p><p><span>电池�?10/220V 电源输入 </span></p></td></tr><tr><td><p><span>尺寸</span></p></td><td><p><span>机架安装�?7" w x 14.5" d x 5.5" h (43 x 37 x 14 cm) </span></p></td></tr><tr><td><p><span>重量</span></p></td><td><p><span>18.6 lb (8.4 kg) </span></p></td></tr><tr><td><p><span>数据输出</span></p></td><td><p><span>USB� RS232� 0~2.5 V </span><span>模拟器， 4~20 mA 模拟器可� </span></p></td></tr><tr><td><p><span>数据传输波特速率</span></p></td><td><p><span>2400� 4800� 19200 </span></p></td></tr><tr><td><p><span>输出范围</span></p></td><td><p><span>用户在菜单中自定义比例因孏�/span></p></td></tr><tr><td><p><strong><span>DewLine? </span></strong></p></td><td><p><span>月�/span></p></td></tr><tr><td><p><span>长寿命泵</span></p></td><td><p><span>月�/span><span>�?5000 hr </span></p></td></tr><tr><td><p><span>流量讠�/span></p></td><td><p><span>月�/span></p></td></tr><tr><td><p><span>可选项</span></p></td><td><p><span>用于无线数据传输的蓝牘�/span></p></td></tr></tbody></table><p><strong><span>生产厂家９�/span></strong><strong><span>美国 </span></strong><strong><span>2B</span></strong></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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