Product DescriptionThe instrument adopts β - ray method. β - ray is a kind of high-speed electron flow. When it penetrates the material, part of it is absorbed, resulting in intensity attenuation. Under certain conditions, the attenuation is only related to the mass of the absorbing material, but not to the other physical properties (such as material, color, luster, shape, etc.) of the absorbing material, so the mass concentration of atmospheric particulate matter can be measured directly. The instrument uses low energy c 14 as the source of β - ray. The ray passes through the clean filter paper and the filter paper with particulate matter twice before and after the collection of particulate matter. According to the change of β - ray absorption, the mass of particulate matter is calculated by Lambert Beer law.
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