Met One 034B

Wind speed/direction sensor

Part # 51080

034B wind sensor

The Met One 034B wind speed and direction sensor combines both wind 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.

  • Compact design for minimum visual impact
  • Long field life
  • Durable aluminum and stainless steel construction
  • Low starting threshold
  • Very low power operation
  • Easy maintenance and re-alignment
  • Sealed magnetic reed switch for wind speed measurement
  • Aluminum direction vane coupled to a precision potentiometer
  • Digital or analog measurement ability

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Technical Specifications

Wind speed


0 - 167 mph (0 - 75 m/s)

Starting threshold

0.9 mph (0.4 m/s)

Accuracy < 22.7 mph

0.25 mph (0.1 m/s)

Accuracy > 22.7 mph

±1.1% of true

Wind direction


Mechanical: 0° - 360°
Electrical: 0 - 356°

Starting threshold

0.9 mph (0.4 m/s)



Damping ratio

.25 standard (.4 to .6 optional)


< 0.5


Operating temperature range

-30°C to +70°C (-22°F to +158°F)
Minimal icing conditions

Wind speed

Pulsed contact closure

Wind Direction

Potentiometer output (0 – 10 K ohms)