7
Vantage Pro2
™
Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High Threshold from Daily Total
Alarm Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 19.9 MEDs
U l t r a V i o l e t ( U V ) R a d i a t i o n I n d e x ( r e q u i r e s U V s e n s o r )
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 Index
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 16 Index
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5% of full scale (Reference: Yankee UVB-1 at UV index 10 (Extremely
High))
Cosine Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±4% (0° to 65° incident angle); 9% (65° to 85° incident angle)
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 seconds to 1 minute (5 minutes when dark)
Current Graph Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instant Reading and Hourly Average; Daily, Monthly High
Historical Graph Data . . . . . . . . . . . . . . . . . . . . . . . . . . . Hourly Average, Daily, Monthly Highs
Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High Threshold from Instant Calculation
W i n d
Wind Chill (Calculated)
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . 1°F or 1°C (user-selectable); °C is converted from °F and rounded to
the nearest 1°C
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -110° to +135°F (-79° to +57°C)
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2°F (±1°C) (typical)
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 to 12 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 and Monthly Low
Historical Graph Data. . . . . . . . . . . . . . . . . . . . . . . . Hourly, Daily and Monthly Lows
Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Low Threshold from Instant Calculation
Wind Direction
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 - 360°
Display Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . 16 points (22.5°) on compass rose, 1° in numeric display
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3°
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 to 3 seconds
Current Graph Data . . . . . . . . . . . . . . . . . . . . . . . . . Instant Reading (user adjustable); 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 . . . . . . . . . . . . . . . . . . . . . . . . 1 mph, 1 km/h, 0.4 m/s, or 1 knot (user-selectable) Measured in mph;
other units are converted from mph and rounded to nearest 1 km/hr, 0.1
m/s, or 1 knot.
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 to 200 mph, 1 to 173 knots, 0.5 to 89 m/s, 1 to 322 km/h
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instant Reading: 2.5 to 3 seconds, 10-minute Average: 1 minute
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2 mph (2 kts, 3 km/h, 1 m/s) or ±5%, whichever is greater
Maximum Cable Length . . . . . . . . . . . . . . . . . . . . . . 540’ (165 m) (Note that maximum wind speed reading decreases as
length of cable from anemometer to ISS increases.)
Current Display Data . . . . . . . . . . . . . . . . . . . . . . . . Instant
Current Graph Data . . . . . . . . . . . . . . . . . . . . . . . . . Instant Reading; 10-minute and Hourly Average; Hourly High; Daily,
Monthly and Yearly High with Direction of High
Historical Graph Data. . . . . . . . . . . . . . . . . . . . . . . . 10-min. and Hourly Averages; Hourly Highs; Daily, Monthly and Yearly
Highs with Direction of Highs
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High Thresholds from Instant Reading and 10-minute Average