110-WS-25
Modular Weather Stations
The 110-WS-25 Modular Weather Station is a user-friendly meteorological system designed for storing and monitoring weather conditions in real time. The standard sensor package includes six weather parameters: wind speed and direction, temperature and relative humidity, barometric pressure, and precipitation. Spare input channels allow for the addition of optional sensors. Real-time readings can be viewed on the LCD display. Front panel buttons control menu functions and programming.
The 110-WS-25 Modular Weather Station is a user-friendly meteorological system designed for storing and monitoring weather conditions in real time. The standard sensor package includes six weather parameters: wind speed and direction, temperature and relative humidity, barometric pressure, and precipitation. Spare input channels allow for the addition of optional sensors. No computer is required for setup or viewing data. The simple menu interface uses the LCD display and three front-panel buttons to make setup easy.
Data is recorded directly onto a Secure Digital (SD™) card, which provides convenient storage and download of data for many months. The data logger is compatible with standard SD cards of up to 2 GB. With logging at one-minute intervals, a 2 GB card can store over five years of data. A new file is created and saved to the card each day. Using the recorded data is simple. Insert the SD card into a card reader attached to the USB port on your computer (Windows, Macintosh, or Linux), and it will show up as a drive. To view and graph the data, click on the corresponding file for the desired date. You can use Microsoft Excel, OpenOffice.org, or any other spreadsheet program to view, graph, and analyze your data.
The RS232 serial port can be connected to a computer via cable for real-time data display. For longer distances, add a pair of Spread Spectrum radios. The optional device server simplifies connection to a hosted website.
Available Configurations
- 110-WS-25 Modular Weather Station - Desktop
- 110-WS-25DL-D Data Logger in Desktop Enclosure
- 200-WS-02FA-TS Wind Speed & Direction Sensor
- 110-WS-25BP Barometric Pressure Sensor
- 110-WS-25THA Temperature & Relative Humidity Sensor with Solar Radiation Shield
- 110-WS-25RG Rain Gauge with Tower Mounting Arm
- 110-WS-25TM Tripod & Sensor Mast
- 110-WS-25N Modular Weather Station
- 110-WS-25DL-N Data Logger in NEMA-4X Enclosure includes mounting hardware, surge protection, backup battery
- 200-WS-02FA-TS Wind Speed & Direction Sensor
- 110-WS-25BP Barometric Pressure Sensor
- 110-WS-25THA Temperature & Relative Humidity Sensor with Solar Radiation Shield
- 110-WS-25RG Rain Gauge with Tower Mounting Arm
- 110-WS-25TM Tripod & Sensor Mast
- 110-WS-25HA High Accuracy Weather Station
- 110-WS-25DL-N Data Logger in NEMA-4X Enclosure includes mounting hardware, surge protection, backup battery
- 200-05103 Wind Monitor (requires 200-6511 Amplifier)
- 200-6511 AC Anemometer Amplifier (RMY to WS-25)
- 225-HMP155A Temperature & Relative Humidity Sensor, 11' cable 380-41003
- Solar Radiation Shield for Temperature & Relative Humidity Sensor
- 260-2500 8" Rain Gauge, 0.01in/tip
- 260-950 8" Rain Gauge Mounting Plate
- 110-WS-25TM Tripod & Sensor Mast
- 110-WS-25P-A Portable Weather Station
- 110-WS-25DL-CC Data Logger in Carrying Case
- 200-WS-02FA-TS Wind Speed & Direction Sensor
- 110-WS-25T Temperature Sensor
- 110-WS-25THS Solar Radiation Shield
- 110-WS-25TM-P Tripod & Sensor Mast with Carrying Case
- 110-WS-25P-B Portable Weather Station
- 110-WS-25DL-CC Data Logger in Carrying Case
- 200-WS-02FA-TS Wind Speed & Direction Sensor
- 110-WS-25THA Temperature & Relative Humidity Sensor with Solar Radiation Shield
- 110-WS-25TM-P Tripod & Sensor Mast with Carrying Case
- Options
- 110-WS-25SR Solar Radiation Sensor with Tower Mounting Arm
- 110-WS-25SR-A Amplified Solar Radiation Sensor with Tower Mounting Arm
- 110-WS-25SP-20 Solar Panel (20W) with Regulator
- 110-WS-25SP-2033 Solar Panel (20W) with Regulator, 33AH Battery, Battery Case
- 110-WS-25STR Graphical Display Software
- Spread Spectrum Radios
Specifications
Data Logger Module
- (Available in Desktop, NEMA, and Portable versions)
- Inputs: 8 analog (1 channel reserved for battery voltage) 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: 512MB SD memory card and USB card reader included
- Operating temperature: -40 °F to 140 °F (-40 °C to 60 °C)
Typical Data Sample
- 2025-03-20 13:51:50,4.2,10.1,190,,,,,,,,,0.04,223,12.14,,,,57.807,67.471,28.700,,192
- 2025-03-20 13:52:50,2.6,9.9,233,,,,,,,,,0.05,269,12.10,,,,57.547,68.618,28.700,,59
Sample Data in Worksheet (titles added)

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: -40 °F to +140 °F (-40 °C to +60 °C)
- Accuracy: 1.1 °F (± 0.6 °C) @ +68 °F (+20 °C)
Relative Humidity
- Measurement range: 10 to 90% (for which accuracy is specified)
- Accuracy: > ± 3% @ +68 °F (+20 °C)
- Operating range: 0-100% RH
- Stability: ± 2% RH over 2 years
Barometric Pressure
- Range: 150-1150 mb (4.43 to 33.96 inHg)
- Non-linearity: < 1%
- Operating temperature: -40 °C to 60 °C
- 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
Downloads
- 110-WS-25 Weather Station Data Sheet
- 110-WS-25HA High Accuracy Weather Station Configuration
- 110-WS-25 Weather Station Quick Start Instruction Sheet
- 110-WS-25N Weather Station Quick Start Instruction Sheet
- 110-WS-25P Portable Weather Station Quick Start Instruction Sheet
- 110-WS-25 Weather Station User Manual
- 110-WS-25DL Data Logger Manual
- 110-WS-25DL Data Logger Worksheet (spreadsheet)
- 110-WS-25TM Tripod and Mast Data Sheet
- 110-WS-25TM-P Tripod and Mast with Carrying Case
- 110-WS-25STR Graphical Display Software
- 110-WS-25DS Device Server Upgrade
- 200-1405-CC RS232 Communications Cable & 110-WS-16USB Adapter







