VAISALA PWD22 Present Weather and Visibility Sensor (10 … 2000 m (32 … 6500 ft))

Operating principle: Forward scatter measurement with 45° scattering angle

Observation range of MOR: 10 … 20 000 m (32 … 65 600 ft)

Accuracy:

±10 % at 10 … 10 000 m (32 … 32 800 ft)

±15 % at 10 … 20 km (2.6 … 12 mi)

Weather type identification: 7 different types of precipitation (rain, freezing rain, drizzle, freezing drizzle, mixed rain/snow, snow, ice pellets). Precipitation (unknown type) Fog (mist), haze (smoke, sand) or clear

Weather type reporting: WMO 4680 (SYNOP), 4678 (METAR) and NWS code tables; 49 different codes supported from WMO 4680 code table

Precipitation detection sensitivity: 0.05 mm/h (0.0020 in/h) or less, within 10 minutes

Precipitation intensity measurement: 0.00 ... 999.99 mm/h (0.00 ... 39.37 in/h)

Precipitation amount measurement: 0.00 ... 99.99 mm (0.00 ... 3.94 in)

Amount of new snow: 0.00 ... 999 mm (0.00 ... 39.33 in)

IP rating: IP66

Weight: 3 kg (6.61 lb)

Dimensions (H × W × L):

PWD12/22/52: 167 × 404 × 695 mm (6.57 × 15.91 × 27.36 in)