Ultra-High Sensitivity Aerosol Spectrometer

  • Photo of the UHSAS (top instrument) mounted next to a 2DC probe (bottom) on the GV research aircraft:

HIAPER Aerosol Spectrometer Probe, Optical Particle Counter

****** The OPC is not currently requestable ******

The OPC has optics from a PCASP (original probe by PMS), electronics and data interface from DMT, and a flow system designed by RAF.  Instrument is similar to DMT's PCASP-X2.  It is a rack-mount instrument with internal air pump, and for sampling requires an inlet and tubing. Particle detection and sizing are based on laser light scattering, with pulse amplitude determined with two gain stages to cover the large dynamic range.

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