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Technical Data OTT Parsivel
| Optical sensor,
Laser diode | wave length 650 nm, 1 mW output power,
laser class 1
| | Beam dimension | W x D 180 x 30 mm | | Measurement area | 54 cm², detection of border events | | Measurement range
Particle size
Particle velocity |
0.2 25 mm
0.2 20 m/s
| | Type and identification | precipitation intensity / amount | Distribution of
precipitation particles
| 32 size classes and 32 velocity classes
8 precipitation types (drizzle, drizzle/rain, rain,
snow/rain, snow, snow grain, sleet, hail)
radar reflectivity Z
| | Weather code reports | WMO 4680/4677 (SYNOP) 4678 (METAR) and NWS tables differentiation of precipitation types drizzle, rain, hail,
snow > 97 % accordance with human observer values | | | Visibility at precipitation | measurement range (MOR) 100 ... 5000 m; ±10%
| | | Housing | aerodynamical protection housing (IP 65) of stainless steel | | Rain rate
Minimal intensity
Maximal intensity |
0.001 mm/h drizzle/rain
1,200 mm/h
| | All weather conditions proofed
| self-controlled heating against ice or snow coverage of housing (min. 24 V DC) | | | Temperature range | -40 ... +70 °C; 0...100 % rel. air humidity | | 
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