Home / Products / Meteorology / Vaisala Present Weather Sensor FS11P
Vaisala Present Weather Sensor FS11P
Overview
- Measures visibility up to 75 km
 - Detects precipitation type and intensity
 - Well suited for synoptic and aeronautical applications
 - The most widely proven forward scatter RVR sensor, selected and used by FAA
 - Meets FAA and ICAO specifications for RVR and visibility measurement
 - The most widely proven present weather sensing technology
 - Minimal maintenance needs
 - Meets ICAO frangibility standards
 
Technical Specifications
| Visibility (MOR) measurement | |
| Measurement range (MOR) Accuracy | 5...75,000 m with 1, 3 and 10-minute averaging +10 % range 5...10,000 m ±20 % range 10,000...75,000 m  | 
| Present Weather | |
| Identifies | 7 different types of precipitation (rain, freezing rain, drizzle, freezing drizzle, mixed rain/snow, snow, ice pellets) Fog, mist, haze (smoke, sand) or clear  | 
| Reports | WMO 4680 (SYNOP), 4678 (METAR) and NWS code tables 49 different codes supported in the WMO 4680 code table  | 
| Operating environment | |
| Operating temperature | -40...+65 °C, optional -55...+65 °C | 
| Operating humidity | 0...100 %RH | 
| Wind speed | Up to 60 m/s | 
| Inputs and outputs | |
| Main supply | 100/115/230 VAC +/-10 %, 50-60 Hz | 
| Power consumption | 370 W maximum | 
| Outputs | (50 VA + 320 VA defrosting heaters)
Serial line RS-232 or opto-isolated RS-485 (2-wire) or optional data modem Separate RS-232 maintenance line  | 
| Mechanics | |
| Dimensions | 2.8 m x 0.9 m x 1.0 m | 
| Weight | 52 kg, incl. Frangible Mast FSFM250 | 
| Mast | Frangible and hinged composite-fiber mast | 
| For complete specifications, please see the brochure in "Product Documentation". | |
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