The SWS-250 is optimised for use in aviation applications where both visibility and extended present and past weather information is required.

Key Features

  • Present and past weather codes
  • WMO Table 4680 & METAR Outputs
  • Instantaneous and averaged visibility outputs
  • 39 WMO 4680 codes
  • Atmospheric extinction coefficient (EXCO)
  • Easy integration of ALS-2 ambient light sensor
  • Simple field calibration
  • 3 years warranty

The sensor measures: visibility (MOR, EXCO and TEXCO), fog, haze, drizzle, snow, hail and other non-frozen precipitation according to WMO 4680. METAR coded outputs are also provided. For ultimate visibility performance the visual range extends to 75 km allowing use in meteorological observation networks and research applications.

The enhanced present weather information from the SWS-250 is due to the back scatter receiver which allows detailed precipitation analysis and the use of algorithms developed for Biral’s flagship HSS75 present weather sensor.

Easy integration of the Biral ALS-2 ambient light sensor makes the SWS-250 perfect for use in aviation application where both RVR and METAR data are needed. Calibration in the field can be accomplished quickly and simply by a single operator using the optional calibration kit.

SWS-250 - Product sheet