Anemometer is a device used for measuring wind speed and direction. Anemometers are important tools for meteorologists, who study weather patterns. The most common type of anemometer has three or four cups attached to horizontal arms. The arms are attached to a vertical rod. As the wind blows, the cups rotate, making the rod spin. The stronger the wind blows, the faster the rod spins. The anemometer counts the number of rotations, or turns, which is used to calculate wind speed.
WAM-M-01 can withstand strong gust still very sensitive to light breeze. Rugged components and sealed bearing give it long life.
Wind direction is sensed by a potentiometer. With the precision excitation voltage from the datalogger applied to the potentiometer element, the output signal is an analog voltage that is directly proportional to the azimuth angle of the wind direction.
The wind speed sensor uses a cup wheel assembly to measure wind speed. It’s a three-cup anemometer assembly with sealed magnetic reed switch. Rotation of the cup-wheel produces a pulse that is directly proportional to wind speed. The frequency of the ac signal is measured by a datalogger pulse count channel, then converted to engineering units (m/s). We use low friction bearings, which lowers the anemometer’s start-up threshold.