HTabsOverviewThis precipitation-measuring optical disdrometer, used by the National Weather Service for rain and drizzle research, measures the size distribution, fall velocity, and rain rate of droplets from 50 µm to greater than 6.4 mm. Key Features Highly detailed measurements Identify precipitation type with 2D imaging of precipitation particle sizes and shapes and a 1D histogram of particle sizes. Post processing enables derivation of rainfall rate and intensity. All-weather performance Overcome the elements with optical heads that are heated to prevent the window from becoming coated with fog or frozen precipitation. Improved functionality Rely on the included wind vane to align sample path with wind flow, and use the free-standing swivel-mount for extended versatility. SpecificationSpecification: Parameter Specification Measured Parameters Single-particle light imaging Derived Parameters Particle diameter Particle number concentration Liquid water content (LWC) Effective diameter (ED) Median volume diameter (MVD) Technique 64-element diode array, 20-cm path length Resolution 25, 50 or 100-micron resolution (specify when ordering) Particle Size Range 50 µm to >6.4 mm (maximum size depends on probe resolution) Number Conc. Range 0 - 2,000 particles/cm3 Particle-by-particle Fall Velocity 5 - 500 cm/sec Inter-arrival Time of Particles 0.001 - 100 sec Communications High-speed serial RS-422; USB Software Optional PADS software provides data analysis tools to display, record and play back data Power Requirements Powered by 115 V / 60 Hz or 230 V / 50 Hz (specify when ordering) Power consumption: 200 W
