system function

OTT Parsivel2 is a new type of optical raindrop spectrometer based on the extinction principle, which can accurately and reliably measure various types of precipitation above 1 meter above the surface (other heights can be customized according to actual needs), such as drizzle, light rain, hail, snowfall, and mixed precipitation. At the same time, it can also obtain indicators such as radar emissivity, visibility, and precipitation kinetic energy, and the obtained data is transmitted to the data collector or PC through communication cables.

working principle

OTT Parsivele2 emits infrared laser horizontally through a detection head, which is collected on a photodiode at the receiving end after passing through the atmosphere. When precipitation particles descend through the measurement area, the intensity of the laser received by the photodiode will change, and the digital signal processor (DSP) will calculate the size, velocity, and type of particles based on this change. The measurement interval can be set as needed between 10 seconds and 1 hour.

Superb measurement performance, precise waterproof design, and easy operation makeOTT Parsivele2 has become an ideal choice for measuring in unmanned or difficult to maintain environments. At present, it is widely used around the world, including NASA, the University of Washington, Met Office UK, and the Japan Aerospace Exploration Agency.

System features

lExcellent performance: measure the size and speed of each precipitation grain, calculate the required meteorological parameters

lNo maintenance required: no moving parts or collection buckets, no need for regular maintenance

lReliable and stable: connected to accurate precipitation data, equipped with a complete overvoltage protection device

lGood economy: low power consumption, probe heating can be independently controlled separately

lExcellent design: sturdy aluminum casing and symmetrical design of measuring head to prevent laser direction deviation

lFlexible communication: standard configurationRS485, SDI-12, USB and pulse interfaces, can be connected to data collectors, connected to automatic weather stations or directly connected to computers

application area

lMeteorological research

lReal time weather measurement

lRoad traffic monitoring

lFlood warning

lRadar calibration

lHydrogeological research, such as surface erosion

reference

1. Pujiang Plain; Zhao Guoqiang; Cai Dingjun; Yao Zhanyu; Yuan Dongmei; Lv Mei;; Parsivel~ laser precipitation particle spectrometer and its application in the field of meteorology [J]; Meteorology and Environmental Science; Issue 02, 2007

2. Miao Shaobao, Lu Yihuai, and Gui overseas Chinese, Cheng Yintian, have a brave spirit. Laser Raindrop Spectrometer Precipitation Retrieval and Error Correction "Journal of Atmospheric and Environmental Optics, June 2011

3. Zhu Yaqiao, Liu Yuanbo Research progress on observation technology and characteristics of ground raindrop spectra [J]. Advances in Earth Sciences, 2013, 28 (6): 685-694

4. Zhou Liming Progress in Observation and Analysis of Ground Raindrop Spectrum [J]. Shandong Meteorology, 2014 (3): 1-5

5. Pujiang Ping, Zhang Wei, Jiang Aijun, etc Study on Raindrop Spectral Distribution Characteristics Using Laser Precipitation Particle Spectrometer [J]. Meteorological Science, 2010, 30 (5): 701-707

6. Li Dejun, Xiong Shouquan, Liucao, etc Analysis on characteristics of surface raindrop spectrum of a short-time snowstorm process in Wuhan [J]. rainstorm Disaster, 2013, 32 (2): 188-192