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SWS-250 Visibility & Present Weather Sensor

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SWS-250 Visibility & Present Weather Sensor

    • Present and past weather codes
    • WMO Table 4680 & METAR Outputs
    • Instantaneous and averaged visibility outputs
    • 39 WMO 4680 codes
    • transmissometer equivalent EXCO output (TEXCO)
    • Easy integration of Biral ALS-2 ambient light sensor
    • Simple field calibration

    Visibility and precipitation measurements
    • Range (visibility)
    10m to 75km
    • Measures
    Visibility, present and past weather
    • Output
    Serial data
    • Measurement Error
    <=10% at 10 km, <=15% at 20 km, <=20% at 30 km
    • Measurement principle
    Forward scatter meter with 39° to 51°angle
    • Precipitation detection resolution
    Rain: 0.015 mm/hr Snow: 0.0015 mm/hr
    • Maximum rain rate
    250 mm/hr
    • Rain intensity accuracy
    ≤ 15%
    Outputs and reports
    • output rate (seconds)
    30 to 300 (selectable)
    • digital (serial) outputs
    RS-232, RS-422, RS-485
    • WMO Codes
    39 from table 4680
    • METAR Codes
    34 present and past weather
    Power Requirements
    • Sensor power
    9-36 VDC
    • Hood heating power
    24 V AC or DC
    • Basic sensor
    • Window heaters
    • Hood heaters
    3.5W 2.5 W – with no-dew window heaters OFF 36 W
    Additional features
    • Hood heaters
    fitted as standard
    • Window contamination monitoring
    Fitted as standard to both sensor headwindows
    Environmental
    • Operating temperature
    -40°C to +60°C
    • Operating humidity
    0 – 100% RH
    • Protection rating
    IP65
    Physical
    • Material
    Powder coated aluminium (IP65 protection rating)
    • Weight
    3.3 Kg
    • Length
    0.81 m
    • Lifetime
    >10 Years
    Maintenance
    • self test functions
    with maintenance warnings
    • user confidence check
    6 months (suggested)
    • window cleaning
    3 months Automatic compensation and warnings
    Certification & Compliance
    CE certified
    EMC compliance with EN61326-1997, 1998, 2001
    RoHS and WEEE compliant

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