Brechtel

BrechtelModel 1200 -Isokinetic Inlet System

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Sampling particles from moving platforms can be tough – especially larger coarse-mode aerosol that are easily lost inside inlets due to turbulent deposition. The Isokinetic Inlet System has been designed using our wind tunnel facility to minimize particle losses in aircraft sampling applications where automated operation and field-tested performance are required. Brechtel has over 14 years of aircraft sampling and isokinetic inlet development expertise to help with your application.

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  • Fully automated, hands-off operation
  • Transmission efficiency > 90% for particle aerodynamic diameters < 10 microns
  • Wind tunnel tested and validated
  • Custom inlet manifold design for each application including sample pickoffs
  • Custom mounting solutions that account for aircraft angle of attack
  • Aerodynamic, twin-diffuser prevents turbulent boundary layer separation
  • Passive pumping removes diffuser turbulent boundary layer
  • Low power blower to draw and actively control 150 lpm sample flow (up to 100 lpm of air flow for instruments)
  • Anti-icing system

  • Passive pumping in diffuser reduces necessary pumping power
  • Small rack-mountable control chassis easy to integrate
  • Easily adaptable to different aircraft
  • External probe design that has passed FAA review
  • Automatically maintains isokinetic flow using built-in air speed measurement

  •  Particle aerodynamic diameter size range0.005-10 μm
  • Sample flow at diffuser tip (@100 m/s)300 lpm
  • Sample flow to cabin150 lpm
  • Maximum sample flow to instruments100 lpm
  • Control and DAQ frequency1 Hz
  • Anti-icing power (supplied by platform)900 watts @ 28 VDC
  • Rack-mountable electronics chassis size19 x 6.5 x 12 in/48.25 x 16.5 x 30.5 cm
  • Electronics chassis weight20 lb/9 kg
  • Total system weight70 lb/31.75kg
  • Operating temperature range-40 to 45°C
  • Operating pressure range (absolute)200-1,000 mb
  • Plume studies of power plants
  • Megacity plume studies
  • Volcanic ash studies
  • Below cloud aerosol studies for cloud condensation nucleus research
  • Visibility reduction studies
  • Climate change research
  • Vertical profiling of aerosols
  • Air quality research
  • Mobile laboratories