instruments:parzivel:parzivel
Table of Contents
OTT Parsivel 2
Mentor: S. Schnitt
Principle
The OTT Parsivel 2 is a laser-based optical system for complete and reliable measurement of all types of precipitation. The size range of measurable liquid precipitation particles is from 0.2 … 5 mm, for solid precipitation particles it is from 0.2 … 25 mm. In the process, precipitation particles can have a velocity of from 0.2 … 20 m/s. The precipitation particles are categorized as follows:
- Drizzle
- Drizzle with rain
- Rain
- Rain, drizzle with snow
- Snow
- Snow grains
- Freezing rain
- Hail
Instrument
Current setup at Research Center Jülich on the roof of IEK-8: OTT Parzivel 2.
Data
History
| Period | Place | Project |
|---|---|---|
| 08/2013 - 02/2016 | Research Center Jülich, Germany | TR32 |
| 06/2016 - today | Research Center Jülich, Germany (new instrument) | TR32 |
Specifications
| Parameter | Specification |
|---|---|
| Wavelength | 780 nm |
| Output power | 0,5mW |
| Beam dimension | W x D 180 x 30 mm |
| Measurement area | 54 cm², detection of border events |
| Particle size of liquid precipitation | 0.2 … 5 mm |
| Particle size of solid precipitation | 0.2 … 25 mm |
| Particle velocity | 0.2 … 20 m/s |
| Rain rate Minimal intensity | 0.001 mm/h drizzle/rain |
| Rain rate Maximal intensity | 1,200 mm/h |
| Prod. Temporal Resolution | 60 s |
| Accuracy | ±5 % (liquid) / ±20 % (solid) |
| Dimensions (HxWxD) | 670 x 600 x 114 mm |
| Power supply | 10 … 28V DC, reverse polarity protection |
| Current drawn | Electronics 65 mA at 24 V DC / Heating 2/4 A; 12/24 V DC |
instruments/parzivel/parzivel.txt · Last modified: by tobias