Instrument: OSi OWI-430 DSP-WIVIS Present Weather and Visibility Sensor

The Osi OWI-430 WIVIS is an optical weather and visibility sensor that measures visibility, rain, snow, drizzle, freezing and mixed precipitation conditions. It measures rain in dynamic range 0.1 to 3000 mm/hr; snow in dynamic range 0.01 to 300 mm/hr; visibility in dynamic range 0.001 to 10 km. It is designed to operate in temperatures from -40 to 50 degC, and humidity from 0 to 100 percent.