The SWS-250 is optimised for use in aviation applications where both visibility and extended present and past weather information is required.
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.
For ultimate visibility performance the visual range extends to 99.99km allowing use in meteorological observation networks and research applications.
The enhanced present weather information from the SWS-250 is due to the backscatter receiver which allows detailed precipitation analysis and the use of algorithms developed for Biral’s flagship VPF-750 present weather sensor.
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. Calibration in the field can be accomplished quickly and simply by a single operator using the optional calibration kit
| Measurement | Visibility, MOR |
| Present weather. 39 WMO Table 4680 Codes | |
| Measurement Principle | Forward scatter 45° |
| Measurement Error | 5% at 1,500m |
| Sensor Power | 9 – 36 V DC (6W) |
| Hood heating power | 24 V AC or DC (36W) |
| Operating Temperature | -40°C to 60°C |
| Operating Humidity | 0 – 100% RH |
| Protection rating | IP66/IP67 |
| Weight | 3.5 kg |
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