Product specifications

DS7855 (Rev. D, 1/4/07)
5-13
WeatherLink
7855
WeatherLink
®
for Macintosh
®
OS X
Software and Data Logger
WeatherLink for Macintosh OS X, consists of our WeatherLink software and a data logger. The data logger connects
to a Weather Monitor II, Weather Wizard III, or Perception weather station to enable the transfer of data from your
weather station console to your computer. Once the data is stored in the database, your weather information may be
used to generate a wide variety of reports and graphical displays.
General Description
The software enables transfer of data from the WeatherLink to your computer for creation of a permanent weather
database. Once stored in the database, the information may be used in the generation of a wide variety of numerical
reports and graphical displays.
WeatherLink Software Features
• Displays the current weather station data in a real-time “bulletin” on the computer.
• Allows you to set and clear data in the weather station console (time and date, highs and lows, alarm thresholds,
calibration numbers, etc.) from the computer.
• Graphs archived weather data on an hourly, daily, weekly, monthly, or yearly basis.
• Generates Weather Watcher reports in the National Climatic Data Center (NOAA) format.
• Collects data from multiple weather stations on the same computer.
• Posts weather conditions to your web site.
WeatherLink Data Logger Features
• Archives weather data for subsequent transfer to the computer.
• Manages data communication between the weather station and the WeatherLink software.
System Requirements
Apple Macintosh computer running OS X with 5 MB of free disk space plus a USB/serial port adapter. The amount
of disk space necessary for the database files depends on the archive interval. Database files containing data stored at
a 30-minute archive interval require approximately 120K of disk space per month of data. The file size changes in a
linear fashion depending on the archive interval. For example, data stored at a 1-minute interval requires
approximately 3.6 MB/month, while the data stored at a 2-hour interval requires approximately 30K/month. For phone
modem connections, the following additional hardware is required: One external modem to connect to the
WeatherLink and one internal modem or external modem connected to your computer (modems must be Hayes
compatible and run at either 1200 or 2400 baud), and Telephone Modem Adapter (#7870).
WeatherLink Product Information
Current Data
Current data are contained in an 18-byte “sensor image” which is available to be transmitted to the computer for real-
time "bulletin" display.
Sensor Image Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inside Temperature, Outside Temperature, Wind Direction (0°-360°),
Wind Speed, Rainfall Total, Inside Humidity, Outside Humidity,
Barometer
Transmission Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . Once per second (approximately)
Data Logging
Weather data are stored in 21-byte archival records. The records are contained in the 32K “archive” (1560 records)
which may be transferred to the computer using the software. Maxima, minima, and averages are taken over the
archive interval.