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首页> 外文会议>Air Waste Management Association's Annual conference Exhibition >A Continuous Ambient Mass Monitoring System (CAMMS) for PM2.5 fine particulate mass concentration
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A Continuous Ambient Mass Monitoring System (CAMMS) for PM2.5 fine particulate mass concentration

机译：PM2.5微粒质量浓度的连续环境质量监测系统（CAMMS）

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The system is based on the increasing pressure drop of a filter by loading it with particulate. A constant airflow through a fllter generates an increasing pressure drop over the fllter, when dust is settling down on the filter material. But this pressure drop does not only depend on the mass concentration, but also on the particle diameter. It is very sensitive on small particles, but not on big particles. The CAMM's has two virtual impactor stages that take out a given percentage of the fine dust amount, so that the sensitivity becomes independent of the particle size and linear to the mass concentration. A reference path does cancel out temperature, humidity and other effects. CAMM's is ideal for measuring volatile particles because no heating is required (a permeation dryer keeps RH < 40%). An automatic filter transport system ensures continuous dust measurement and avoids losses caused by changes in sampling equilibrium. Measurements showing the performance of the system and comparing it to other methods will be shown.
机译：该系统通过将其加载颗粒来基于滤波器的增加压降。当灰尘在过滤材料上稳定时，通过Fllter的恒定气流通过普通的压力降低，在粉尘上沉降。但这种压降不仅取决于质量浓度，还依赖于粒径。它对小颗粒非常敏感，但不是大颗粒。 CAMM具有两个虚拟撞击级，取出给定百分比的细粉尘量，使得灵敏度变得与粒度与质量浓度的线性无关。参考路径确实取消温度，湿度和其他效果。 CAMM非常适合测量挥发性颗粒，因为不需要加热（渗透干燥器保持RH <40％）。自动过滤器传输系统确保连续灰尘测量，避免采样平衡变化引起的损耗。测量显示系统性能并将其与其他方法进行比较。

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