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Weather Station Operation/Installation Manual
Relative Humidity
Relative Humidity is measured from the humidity sensor located on the
base of the sensor.
Delta T
Delta T is calculated by the X20 Guidance software, from the
temperature and relative humidity readings sent from the Weather
Station sensor.
Temperature
Temperature is measured using the 3 ultra-sonic sensors on the Weather
Station to measure the speed of sound. Speed of sound is affected by
temperature, therefore temperature is calculated by measuring the speed
of sound between the sensors.
For best results a slight ow of air is required to give
an accurate temperature reading.
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