The Met One Wind Speed and Direction Sensor combines wind speed and direction measurements into a single sensing unit. The unit installs in minutes and will provide accurate, long term, continuous monitoring in hostile environments.

The sensor is designed to operate within a temperature range of -30° to +70° C and with wind speeds up to 167 mph. Wind speed is measured using a sealed reed switch which provides a series of pulses at a rate proportional to wind speed. Aluminum cups are used for durability and strength. Wind direction is measured using an aluminum vane directly coupled to a precision potentiometer. Variations in wind direction produce a corresponding change of voltage, which lends itself to both digital and analog measurement systems.

Met One Wind Speed and Direction Sensor General Specifications:

• Operating Temperature Range: -30° C to +70° C
• Wind Speed Output Signal: Pulsed contact closure
• Wind Direction Output Signal: Potentiometer output (0 - 10 kohms)

Wind Speed Specifications:

• Range: 0 - 167 mph (0-75 m/s)
• Starting Threshold: 0.9 mph (0.4 m/s)
• Accuracy < 22.7 mph: .25 mph (0.1 m/s)
• Accuracy > 22.7 mph: ±1.1% of true

Wind Direction Specifications:

• Range: Mechanical 0-360°, Electrical 0-356°
• Starting Threshold: 0.9 mph (0.4 m/s)
• Accuracy: ±4°
• Damping Ratio: .25 standard (.4 to .6 optional)
• Resolution: < 0.5°