The disdrometer for rain drops is an instrument for measuring rain drop size distributions continuously and automatically. It was developed because statistically meaningful samples of rain drops could not be measured previously without a prohibitive amount of work.
The disdrometer for rain drops consists of two units: the sensor, which is exposed to the rain and the processor for analog processing and digitizing of the sensor signal. A cable, 4 meters long, is used to connect the two units.
A program for data acquisition on a Personal Computer (PC) or a notebook is delivered with the RD-80.
With this program the user can record and evaluate drop size data from the RD-80 disdrometer. Graphs of rainfall rate, liquid water content and radar reflectivity factor vs. time are generated and all significant data is stored in data files on hard disk. See detailed description in Data Processing.