Product specifications

1-7
Vantage Pro2
™
Wind
Wind Chill (Calculated)
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . 1°F or 1°C. Celsius is converted from Fahrenheit and rounded to the
nearest 1°C
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -110° to +130°F (-79° to +54°C)
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2°F (±1°C) (typical)
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 seconds
Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . United States National Weather Service (NWS)/NOAA
Equation Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Osczevski (1995) (adopted by US NWS in 2001)
Variables Used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instant Outside Temperature and 10-min. Avg. Wind Speed
Current Display Data . . . . . . . . . . . . . . . . . . . . . . . . Instant Calculation
Current Graph Data . . . . . . . . . . . . . . . . . . . . . . . . . Instant Calculation; Hourly, Daily, Monthly Low
Historical Graph Data. . . . . . . . . . . . . . . . . . . . . . . . Hourly, Daily, Monthly Lows
Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Low Threshold from Instant Calculation
Wind Direction
Display Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . 16 points (22.5°) on compass rose, 1° in numeric display
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±4°
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 seconds
Current Display Data . . . . . . . . . . . . . . . . . . . . . . . . Instant (user-adjustable offset available)
Current Graph Data . . . . . . . . . . . . . . . . . . . . . . . . . Instant; 10-min. Dominant; Hourly, Daily, Monthly Dominant
Historical Graph Data. . . . . . . . . . . . . . . . . . . . . . . . Past 6 10-min. Dominants on compass rose only; Hourly, Daily,
Monthly Dominants
Wind Speed
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . Measured in 1 mph. Other units are converted from mph and rounded
to nearest 1 km/h, 0.1 m/s, or 1 knot
Range (large wind cups, included) . . . . . . . . . . . . . . 2 to 150 mph, 2 to 130 knots, 1 to 67 m/s, 3 to 241 km/h
Range (small wind cups; optional, not included) . . . . 3 to 175 mph, 3 to 150 knots, 1.5 to 79 m/s, 5 to 282 km/h
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instant Reading: 2.5 seconds, 10-minute Average: 1 minute
Accuracy (large wind cups, included) . . . . . . . . . . . . ±2 mph (2 kts, 3 km/h, 1 m/s) or ±5%, whichever is greater
Accuracy (small wind cups; optional, not included) . . ±3 mph (3 kts, 5 km/h, 1.5 m/s) or ±5%, whichever is greater
Maximum Cable Length . . . . . . . . . . . . . . . . . . . . . . 240' (73 m). Maximum wind speed reading decreases as length of
cable from Anemometer to the ISS increases. At 140' (42 m), maximum
speed is 135 mph (60 m/s). At 240' (73 m), the maximum is 100 mph.
Current Display Data . . . . . . . . . . . . . . . . . . . . . . . . Instant
Current Graph Data . . . . . . . . . . . . . . . . . . . . . . . . . Instant; 10-minute and Hourly Average; Hourly High; Daily, Monthly,
Yearly High with Direction of High
Historical Graph Data. . . . . . . . . . . . . . . . . . . . . . . . 10-min. and Hourly Averages; Hourly Highs; Daily, Monthly, Yearly
Highs with Direction of Highs
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High Thresholds from Instant Reading and 10-minute