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Maju Mapan Mandiri
  • Jual

    STAFLEX PM 10 Environmental Air Sampler Systems

    STAFLEX PM 10 Environmental Air Sampler Systems

    Harga:
    130.000.000,-
    Jumlah Pesanan:
    Staplex® Model TSP-CF and TSP-CF-2 Critical Flow High Volume Air Sampler Systems are designed for Total Suspended Particulate ( TSP) ambient air sampling for compliance with U.S. EPA Reference Method. The Critical Flow Device is a dimensional venture used to control gas flow, When applied to a high volume air sampler, this flow control principle incorporates a smooth-wall venture orifice that gradually opens to a recovery section. Vacuum is provided by a motor downstream of the venture. Over 95% of the energy lost in differential pressures across the restricting orifice is recovered by this design,

    Flow control is accomplished by occluding ( restricting) and thus accelerating the air flow through the venture. At some point in the flow stream, the air velocity will equal the acoustic velocity or speed of sound in the throat ( smallest diameter portion) , and " critical flow " will be achieved. At the critical flow point, the critical flow device will not allow more air through under existing temperature and pressure conditions. As long as downstream changes are small, all conditions at the venturi ( including the flow rate) are determined by upstream conditions. This condition is referred to as â choking " and is a distinctive characteristic of all volumetric critical flow devices.


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