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Optical Rain Guage Rain is measured by detecting the optical
irregularities induced by drops falling through an infrared optical
beam. These irregularities, known as scintillation, have characteristic
pattern, which are detected by the sensor and converted to rain rate.
ORG is a sensitive instrument for measuring precipitation.
Precipitation is measured by detecting the optical scintillation
induced by drops falling through an infra red optical beam. By
detecting the intensity of the scintillations which are characteristics
of precipitation the actual rainfall rate can be estimated. This
instrument provides rain accuracy of 5% and rain resolution of 0.001 mm
.
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