Information

- Resolution and Units : 1°F or 1°C (user-selectable)
- Range: -105° to +130°F (-76° to +54°C)
- Accuracy: ±1.5°C (typical)
- Update Interval: 10bis 12Sekunden
- Source: World Meteorological Organization (WMO)
- Equation Used: WMO Equation with respect to saturation of moist air over water
- Variables Used:Instant Outside Temperature and Instant Outside Relative Humidity
- Current Data: Instant Calculation; Daily, Monthly High and Low
- Historical Data: Hourly Calculations; Daily, Monthly, Yearly Highs and Lows
- Alarms : High and Low Threshold from Instant Calculation
Evapotranspiration (calculated, requires Vantage Pro2 ISS with solar radiation sensor)
- Resolution and Units: 0.01" or 0.1 mm (user-selectable)
- Range: Daily to 32.67" (999.9 mm); Monthly & Yearly to 199.99" (1999.9 mm)
- Accuracy: Greater of 0.01" (0.25 mm) or ±5%, Reference: side-by-side comparison against a CIMIS ET
weather station
- Update Interval: 1 hour
- Calculation and Source: Modified Penman Equation as implemented by CIMIS (California Irrigation
Management Information System) including Net Radiation calculation
- Current Data: Latest Hourly Total Calculation, Daily, Monthly, Yearly Total
- Historical Data: Hourly, Daily, Monthly, Yearly Totals
- Alarm: High Threshold from Latest Daily Total Calculation
Forecast
- Variables Used: Barometric Reading & Trend, Wind Speed & Direction, Rainfall, Temperature, Humidity,
Latitude & Longitude, Time of Year
- Update Interval: 1 hour
- Display Format: Icons on top center of display; displays weather conditions that may occur for the next
12 hours.
- Variables Predicted: Sky Condition, Precipitation
Heat Index (calculated)
- Resolution and Units: 1°F or 1°C (user-selectable)
- Range: -40° to +165°F (-40° to +74°C)
- Accuracy: ±3°F (±1.5°C) (typical)
- Update Interval: 10bis 12 Sekunden
-Source: United States National Weather Service (NWS)/NOAA
- Formulation Used: Steadman (1979) modified by US NWS/NOAA and Davis Instruments to increase
range of use
- Variables Used: Instant Outside Temperature and Instant Outside Relative Humidity
- Current Data: Instant Calculation; Daily, Monthly High
- Historical Data: Hourly Calculations; Daily, Monthly, Yearly Highs
- Alarm: High Threshold from Instant Calculation
Humidity
Inside Relative Humidity (sensor located in console)
- Resolution and Units: 1%
- Range:1 to 100% RH
- Accuracy: ±3% (0 to 90% RH), ±4% (90 to 100% RH)
- Update Interval:1 Minute
- Current Data: Instant (user adjustable) and Hourly Reading; Daily, Monthly High and Low
- Historical Data: Hourly Readings; Daily, Monthly, Yearly Highs and Lows