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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 |
System requirements for connecting Weather Envoy to Windows PCs via USB or serial ports.
System requirements for connecting Weather Envoy to Macintosh computers via USB.
Step-by-step guide to installing the data logger into the Weather Envoy case.
Instructions for correctly inserting AA-cell batteries into the Weather Envoy for power.
Guide to connecting the optional AC power adapter to the Weather Envoy for continuous power.
Instructions for connecting a cabled Weather Envoy to the ISS unit.
Guidelines for optimal placement of the Weather Envoy for accurate readings and signal strength.
Procedure for securely mounting the Weather Envoy unit onto a wall using provided hardware.
Instructions for establishing a local connection using a USB port.
Instructions for establishing a local connection using a serial port.
Lists additional hardware needed for establishing a remote modem connection.
Steps to set up an external or internal modem for remote connection to the Envoy.
Steps to install WeatherLink software on Windows PCs via USB connection.
Steps to install WeatherLink software on Windows PCs via serial port connection.
Instructions for installing and running WeatherLink software on Macintosh computers.
Procedure for adding a new weather station within the WeatherLink software.
Overview of the software's guided setup process for configuring the weather station.
Configuring the communication port (USB or serial) for WeatherLink to connect to the Envoy.
Instructions for setting alarm thresholds within the WeatherLink software.
Details on special alarm types like ET, Barometric Pressure, and Time alarms.
Configuring the software to automatically download data at specified times.
Describes how the anemometer measures wind speed and direction.
Explains how the Envoy measures inside and outside air temperatures.
Details calculations for wind chill, heat index, and THW/THSW apparent temperatures.
Defines relative humidity and its relation to temperature and water vapor content.
Explains dew-point temperature and its use in predicting fog and overnight lows.
Describes how the tipping-bucket rain collector measures and tracks rainfall data.
Explains atmospheric pressure, its measurement, and its use in weather forecasting.
Details the measurement of solar radiation intensity using an optional sensor.
Explains UV radiation measurement, UV Index, and UV Dose (MEDs).
Defines EvapoTranspiration (ET) and the sensors required for calculation.
Measures foliage wetness using an optional sensor.
Measures soil moisture content using an optional sensor.
Details the Envoy's clock and calendar functions for tracking time and date.
Provides general specifications for the Weather Envoy, including operating temperature.
Details communication specifications for wireless models, including batteries and range.
Specifications for inside temperature readings, including resolution and accuracy.
Specifications for barometric pressure measurement, including range and accuracy.
Procedure for locating and verifying the correct serial port for communication.
Addresses issues preventing WeatherLink from communicating with the data logger and station.
Troubleshoots common software issues like incomplete barometer graphs or missing wind data.
Provides phone numbers, fax, and email addresses for Davis Technical Support.
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