SWS-250 VISIBILITY & PRESENT WEATHER SWS-250 Visibility & Present Weather Sensor Measures visibility and identifies a wide range of present and past weather conditions … easy integration with ground based aviation systems in RVR and METAR applications Present and past weather codes WMO Table 4680 & METAR outputs Instantaneous and averaged visibility outputs Transmissometer equivalent EXCO output (TEXCO) Easy integration of Biral ALS-2 ambient light sensor Simple field calibration The SWS-250 is optimised for use in aviation applications where both visibility and extended present and past weather information is required. the use of algorithms developed for Biral’s flagship HSS VPF-750 present weather sensor. For ultimate visibility performance the visual range extends to 75km allowing use in meteorological observation networks and research applications. Easy integration of the Biral ALS-2 ambient light sensor makes the SWS-250 perfect for use in aviation applications where both RVR and METAR data are needed. The enhanced present weather information from the SWS-250 is due to the backscatter receiver which allows detailed precipitation analysis and Calibration in the field can be accomplished quickly and simply by a single operator using the optional calibration kit. Biral have been manufacturing and supplying worldwide high specification Visibility and Present Weather Sensors since 1997. The sensor measures: visibility (MOR, EXCO and TEXCO), fog, haze, drizzle, snow, hail and other non-frozen precipitation according to WMO table 4680. METAR coded outputs are also provided. Contamination monitoring of all optical windows is provided as standard. The contamination status is reported in the main data output and the visibility reading is automatically compensated. A comprehensive self-test capability ensures the user is always aware of the sensor’s status. email: [email protected]

SWS-250 VISIBILITY & PRESENT WEATHER SWS-250 Specifications Visibility & Present Weather Measurement Visibility, present and past weather Operating temperature Serial data Operating humidity Range (visibility) Protection rating Measurement Error Certification & Compliance CE certified Measurement principle Forward scatter meter with 39° to 51° angle Precipitation detection resolution Rain: 0.015mm/hr (0.0006 in/hr) Snow: 0.0015mm/hr (0.00006 in/hr) RoHS and WEEE compliant Maximum rain rate Rain intensity accuracy Physical Material Weight Powder paint coated aluminium 3.5 kg Output rate (seconds)...