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New technology for comprehensive precipitation measurement
Adolf Thies

The 3D Stereo Disdrometer for precipitation characterization will overcome previous shortcomings of instrumentation. The system detects the size, shape and optical properties of meteors as well as their vectorial velocity. This enables superior type detection of hydrometeors as well as non-hydro meteors. The instrument has the high accuracy of accumulation gauges while surpassing the typification of the current disdrometers. Further strengths are the clear identification of solid precipitation as well as the detection of fog.

The 3D Stereo Disdrometer was field tested for several years in various climatic regions. The integrated heating is characterized by its particularly effective heating management. Furthermore, a newly developed and proved algorithm minimizes the well-known wind influence that is observed in most of the common precipitation measurement systems.

Taking pictures of falling particles provides a huge number of analysis options. One of the the 3D Stereo Disdrometer’s main advantages is that it indicates the share of each meteor type for mixed precipitation. Another advantage is the unambiguous detection of non-hydro meteors such as insects, spider webs or blowing sand and dust.

The new, field-proven 3D Stereo Disdrometer is designed for and proven in 24/7 operation with nearly no maintenance needs. It is suitable for everyday use primarily in critical applications where not only are robustness and uptime vital but also minimum failure alarm ratio and highest probability of detection. The device is manufactured in a series production and its price-performance ratio makes it a first choice for highly reliable, fully automated weather station networks, single applications in meteorology, climatology and hydrological measurement tasks.

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