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    TSI 3400A流化床氣溶膠發生器原版資料

    下載次數:285 瀏覽次數:369發布時間:2017-09-06 17:26
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    文檔詳情

    TSI流化床氣溶膠發生器型號3400A 包含一個流化床室和粉末儲存器。 流化床

    由多孔篩網支撐的100微米青銅珠組成允許干凈,干燥的空氣通過,但防止通過

    任何粉末.

    During operation, a bead chain meters powder into the fluidized bed.

    As air forces its way up through the screen and into the bed, it creates

    a boiling action, which deagglomerates the powder and causes it to be

    carried upward by the airflow through a vertical elutriator.

    A cyclone at the top of the vertical elutriator prevents any particles that

    are not fully deagglomerated from being dispersed. With a flow rate of

    9 liters/min, the cyclone allows only respirable dust? to be generated.

    Separate flowmeters measure the bed flow rate and the bead purge

    flow rate.

    The powder reservoir is equipped with a gear-driven rake that rocks

    back and forth, preventing the formation of a channel in the powder

    due to the movement of the bead chain through the powder reservoir.

    This assures a constant, even feed rate into the fluidized bed chamber.

    The airflow pattern through the porous screen further stabilizes the

    concentration of the output aerosol

    Features

    + Particle size range from 0.5 to 40 μm

    + Bed of bronze beads breaks up powder agglomerates

    + Stable output and concentration

    Applications

    + Generating dust for inhalation and toxicology studies

    + Evaluating performance and calibrating dust samplers and monitors

    + Dust erosion in high-speed gas flows

    + Generating particles for laser velocimeter applications

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