VAISALA FS11P Present Weather Sensor (−40 ... +65 °C (−40 ... +149 °F))

- Sensor: RVR

- Weather measurement: 

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)

- Measurement range of MOR: 5 ... 75 000 m (16 ft ... 46.6 mi) with 1, 3, and 10 min averaging

- Accuracy: 

±10 % range 5 ... 10 000 m (16 ft … 6.2 mi)

±20 % range 10 000 ... 75 000 m (6.2 … 46.6 mi)

- Scatter measurement accuracy: ±3 %

- Optical specifications: 

Operating principle: Forward scatter measurement

Scattering angle: 42°

Light source: Near-infrared LED

- AC (mains) power supply: 100/115/230 VAC ±10 %, 50 ... 60 Hz

- Power consumption: Max. 300 VA (60 VA + 240 VA defrosting heaters)

- Dimensions (H × W × D): 2.8 × 0.9 × 1.0 m (9.19 × 2.95 × 3.28 ft)

- Weight without mast: 37 kg (81.57 lb)

- Weight, including Frangible Mast FSFM250: 52 kg (115 lb)

- IP rating: IP66

- Mast: Frangible and hinged glass fiber mast