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Senseca SWS-250 Visibility and Present Weather Sensor

The SWS-250 Visibility and Present Weather Sensor from Senseca is an advanced, cost-effective solution for measuring visibility, fog, haze, drizzle, snow, hail, and other non-frozen precipitation accurately and economically.

  • Senseca SWS-250 Visibility and Present Weather Sensor

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#19412 SWS-250

The SWS-250 Visibility and Present Weather Sensor from Senseca is a compact, cost-effective solution for solar resource assessment campaigns, measuring visibility and various precipitation types with exceptional accuracy. The SWS-250 utilizes forward scatter to measure visibility (MOR, EXCO and TEXCO) and a backscatter receiver for extended present and past weather measurements. This advanced technology significantly improves present weather reporting accuracy and confidently identifies a wide range of precipitation types, including fog, haze, drizzle, snow, hail and other non-frozen precipitation, as specified by WMO table 4680.

Communication with the SWS-250 ​Sensor is over a serial data link that is user-configurable for RS232, RS422 or RS485 signal levels. ASCII encoded data is used and the sensor can operate in either a polled or broadcast mode. 

The SWS-250 integrates seamlessly with the NRG Flare SRA System, providing reliable measurements as required. 

  • Outputs available as WMO Table 4680 and METAR present and past weather codes
  • Automatic window contamination monitoring ensures accuracy and minimizes maintenance needs
  • Wide range of visibility reporting formats including Meteorological Optical Range (MOR) and atmospheric extinction coefficient (EXCO)
  • 10m to 99.99km measurement range
  • Selectable measurement resolution of 1m or 10m (default)
  • Calibration traceable to a national weather service transmissometer in accordance with ICAO standards
  • Compatibility with NRG’s Flare SRA System for plug-and-play operation in pre-construction campaigns