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Automatic Weather Station The automatic weather station consists of 5 sensors
and tipping bucket rain guage. The sensors measure pressure,
temperature, humidity, wind speed and wind direction. Except the
pressure sensor and the rain gauge, the other sensors are mounted on a
3-m tower. Temperature compensated piezo-resistive pressure
sensor is used to measure the pressure with a resolution of 0.1 mb. For
humidity measurement, a thin film capacitance sensor is used which
provides an accuracy of ± 3%. RTD type sensor is used to measure
temperature with a resolution of 0.1o C. 3-cup rotor type sensor is
used to measure wind speed with an accuracy of ± 1%. Potentiometer type
sensor is used to measure the wind direction with a resolution of <
1o. A tipping bucket rain gauge provides rain rate information with a
resolution of 0.5 mm.
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