Modular Weather Stations

WMS-25

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Desktop, NEMA, and Portable Models
8 Analog and 3 Digital Channel Inputs
Resolution: 12-Bit A/D Converter on 4 Channels, 10-Bit on Other Channels
Adjustable Logging Interval 10 to 60,000 Seconds
16 Character x 2 Line Backlit LCD Screen Display
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)
2GB SD Memory Card and USB Card Reader Included

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Descrição

The WMS-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 (WMS-25 and WMS-25-NEMA) includes 6 weather parameters: wind speed and direction, temperature and relative humidity, barometric pressure, and precipitation (additional optional sensors can be added), a 1.5 m (5') 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
Power: 10 to 30 Vdc at 20 mA
Display: 16 characters x 2 line backlit LCD
Logging Interval: Programmable 10 to 60,000 seconds
Wind Speed
    Range: 0 to 125 mph (0 to 57 m/s)
    Resolution: > 0.1 mph
    Accuracy: ± 1 mph
    Starting Threshold: 0.8 mph
    Time Constant: 2 seconds
Wind Direction
    Range: 0 to 360°
    Resolution: > 1%
    Accuracy: ±3°
    Starting Threshold: Standard 1.2 mph
Temperature
    Range: -26 to 70°C (-15 to 158°F)
    Resolution: > 0.1° F
    Accuracy: ±0.5°C (±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 to 1100 mb (14.7 to 32.5 inHg)
    Operating Temperature: -40 to 60°C (-40 to 140°F)
    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 (20.5 cm) collector meets NWS specifications
    Switch: Dry reed switch Output: < 0.1 sec switch closure
    Accuracy: ±2% at < 2" per hour
Note: For weight and dimensions, see operator’s manual at omega.