DAVIS Vantage Pro2 User Manual

Troubleshooting Guide
26
Sea-Level Reduction Equation . .United States Method employed prior to use
of current "R Factor" method
Equation Source . . . . . . . . . . . . .Smithsonian Meteorological Tables
Equation Accuracy . . . . . . . . . . .±0.01" Hg (±0.3 mm Hg, ±0.3 hPa/mb)
Elevation Accuracy Required. . . .±10’ (3m) to meet equation accuracy
specification
Overall Accuracy . . . . . . . . . . . . .±0.04" Hg (±1.0 mm Hg, ±1.4 hPa/mb)
Trend (change in 3 hours) . . . . . .Change ±0.6" (2 hPa/mb, 1.5 mm Hg) =
Rapidly
Change ±0.2" (.7hPa/mb, 0.5 mm Hg)= Slowly
Trend Indication . . . . . . . . . . . . .5 position arrow: Rising (rapidly or slowly),
Steady, or Falling (rapidly or slowly)
Update Interval . . . . . . . . . . . . . .1 minute
Current Data . . . . . . . . . . . . . . . .Instant, 15-min., and Hourly Reading; Daily,
Monthly, High and Low
Historical Data. . . . . . . . . . . . . . .15-min. and Hourly Reading; Daily, Monthly
Highs and Lows
Alarms . . . . . . . . . . . . . . . . . . . .High Threshold from Current Trend for Storm
Clearing (Rising Trend
Low Threshold from Current Trend for Storm
Warning (Falling Trend)
Range for Rising and Falling Trend Alarms0.01 to 0.25" Hg (0.1 to 6.4 mm Hg,
0.1 to 8.5 hPa/mb)
Inside Relative Humidity (sensor located in console)
Range . . . . . . . . . . . . . . . . . . . . .10 to 90% RH
Accuracy . . . . . . . . . . . . . . . . . . .±5%
Update Interval . . . . . . . . . . . . . .1 minute
Current Data . . . . . . . . . . . . . . . .Instant (user adjustable) and Hourly Reading;
Daily, Monthly High and Low
Historical Data. . . . . . . . . . . . . . .Hourly Readings; Daily, Monthly Highs and
Lows
Alarms . . . . . . . . . . . . . . . . . . . .High and Low Threshold from Instant Reading
Clock
Resolution. . . . . . . . . . . . . . . . . .1 minute
Units . . . . . . . . . . . . . . . . . . . . . .Time: 12 or 24 hour format (user-selectable)
Date: US or International format (user-
selectable)
Accuracy . . . . . . . . . . . . . . . . . . .±8 seconds/month
Adjustments . . . . . . . . . . . . . . . .Time: Automatic Daylight Savings Time (for
users in North America, Europe and Australia
that observe it in AUTO mode, MANUAL
setting available for all other areas) Date:
Automatic Leap Year
Troubleshooting Guide
The following section answers some of the most commonly asked questions
about WeatherLink
®
and the Weather Envoy. Please consult this guide and the
WeatherLink software Help before contacting Davis. Please see Contacting
Davis Technical Support on page 30 for more information.

DAVIS Vantage Pro2 Specifications

General

Update Interval	2.5 seconds
Temperature Accuracy	±1°F (±0.5°C)
Barometric Pressure Range	16.00 to 32.50 inHg (540 to 1100 hPa)
Rain Collector Type	Tipping bucket
Wind Speed Range	0 to 200 mph (0 to 322 km/h)
Wind Speed Accuracy	±2 mph (±3 km/h) or ±5%, whichever is greater
Wind Direction Resolution	1°
Wind Direction Accuracy	±3°
Solar Radiation Range	0 to 1800 W/m²
Solar Radiation Sensor Accuracy	±5%
UV Index Range	0 to 16
UV Index Accuracy	±5%
Wireless Transmission Range	Up to 1000 ft (300 m)
Temperature Range	-40°F to +150°F (-40°C to +65°C)
Humidity Range	0 to 100%
Humidity Accuracy	±3%
Rain Collector Resolution	0.01 in (0.2 mm)
Rain Measurement Accuracy	±4%
Wind Direction Range	0 to 360°
Power Supply	Solar powered with battery backup