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WS-25 Modular Weather Station



 



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Product Code: WS-25
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Description
 

The WS-25 Modular Weather Stations are meteorological systems designed to be a "user friendly" solution for data storage and real-time monitoring of weather conditions.

The standard sensor package includes 6 weather parameters: Wind Speed and Direction, Temperature and Relative Humidity, Barometric Pressure, and Precipitation, (additional optional sensors can be added), a 5-Foot Tripod and Vertical Mast for sensor mounting, and a Data Logger with LCD Display.

No computer is required for setup and viewing data. A simple menu interface using the LCD display and three front panel buttons makes setup easy.

Data is recorded directly to a Secure Digital (SD) card, providing convenient data downloads and storage for many months of data. The data logger is compatible with standard SD cards up to 2GB. Logging at 1 minute intervals, a 2GB card will store over 5 years of data. A new file is created and saved to the card each day.

Using the recorded data is simple. The SD card is inserted into a card reader attached to the USB port on your computer (Windows, Macintosh, and Linux) and will then show up as a drive. To view and graph the data, click on the file corresponding to the day of interest. Microsoft Excel, OpenOffice.org, or any spreadsheet program can be used to view, graph, and analyze your data.

Specifications

Data Logger Module
(Available in Desktop, NEMA, and Portable versions)
Inputs: 8 analog and 3 digital channels
Resolution: 12-bit A/D converter on 4 channels, 10-bit on other channels
Logging interval: Adjustable logging interval 10 sec to 60,000 seconds
Display: 16 character x 2 line backlit LCD screen
Power source: 10 to 30 Volts DC at 20 mA
Clock: Real-time clock is used to time-stamp each measurement, battery backed, and accurate to within 10 minutes per year
Serial port: RS232 9-pin connector, selectable baud rate, real-time data output to PC (using Hyperterminal or Optional Graphic Software)
Memory: 2GB SD memory card and USB card reader included
Operating temperature: -40 to 140 F (-40 to 60 C)

Typical Data Sample
2013-03-20 13:51:50,4.2,10.1,190,,,,,,,,,0.04,223,12.14,,,,57.807,67.471,28.700,,192
2013-03-20 13:52:50,2.6,9.9,233,,,,,,,,,0.05,269,12.10,,,,57.547,68.618,28.700,,59

Standard Sensor Package

Wind Speed
Range: 0 to 125 mph (0-57 m/s)
Resolution: > 0.1 mph
Accuracy: 1 mph
Starting threshold: 0.8 mph
Time constant: 2 seconds

Wind Direction
Range: 0-360
Resolution: > 1%
Accuracy: 3%
Starting threshold: 200-WS-02F: 1.2 mph / 200-WS-05F: 0.5 mph

Temperature
Range: -26C to 70C (-15F to 158F)
Resolution: > 0.1 F
Accuracy: 0.5C ( 1 F) typical
Response time: 50 seconds

Relative Humidity
Range: 3% to 100% non-condensing
Accuracy: 3% typical
Response time: 25 seconds

Barometric Pressure
Range: 500-1100 mb (14.7-32.5 inHg)
Operating temperature: -40 to 60C
Resolution: 0.3 mb or 0.01 inHg
Altitude offset (for sea level correction): User adjustable in logger

Rain Gauge
Resolution: 0.01"/tip
8" diameter (20.5cm) collector meets NWS specifications
Switch: Dry reed switch
Output: < 0.1 sec switch closure
Accuracy: 2% at < 2" per hour


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