Biral SWS-250 Visibility and Present Weather Sensor

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

  BIRAL VISIBILITY AND PRESENT WEATHER SENSOR, SWS-250 (#19412)
Description
Sensor type Visibility, Present and Past Weather (MOR & EXCO)
Applications
  • Solar resource assessment and monitoring in compliance with IEC 61724-1:2021
  • Meteorological studies
  • Environmental monitoring applications where both visibility and extended present and past weather information is required
Sensor range Default 10m to 99.99km
Instrument compatibility NRG SymphoniePRO
Certifications
  • CE Certified
  • EMC compliance with EN61326-1997, 1998, 2001
  • RoHS and WEEE compliant"
Input signal
Signal type (sensor output) Forward scatter meter with 39° to 51° angle, centred at 45°
Output signal
Signal type Serial data: RS232, RS422 and RS485
Accuracy
  • ≤4.2% at 600m
  • ≤6.8% at 5km
  • ≤12.3% at 15km
  • ≤17.1% at 25km
  • ≤5.1% at 2km
  • ≤9.6% at 10km
  • ≤14.8% at 20km
  • ≤19.4% at 30km
Resolution 1m or 10m (default)
Power requirements
Supply voltage 9-36Vdc
Heater supply voltage 24Vac or dc
Power Required
  • Basic sensor 3.5W
  • Window heaters 2.5W
  • Hood heater 36W
Installation
Mounting Pole mounting kit (2 x U-bolt)
Environmental
Operating temperature range -40°C to +60°C
Operating humidity range 0 to 100% RH
Lifespan >10 years
Physical
Weight 4.5kg (including mounting kit)
Dimensions Length 811mm
Materials
Body Aluminium. Powder paint finish, with optional hard anodize base layer.
Enclosure IP66/IP67

NRG Systems • 110 Riggs Road • Hinesburg, Vermont 05461 • +1 802-482-2255 • info@nrgsystems.com