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OTT Parsivel²
| Laser Precipitation Measurement |
| Description
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The OTT Parsivel² is an advanced laser-based disdrometer for comprehensive measurement of all precipitation types. Accurate yet economical, the Parsivel² captures both the size and speed of individual preciptation particles and a signal processor classifies the type of precipitation as well as the amount and intensity.Improvements of the Parsivel²:- Infrared laser (785 nm)
- Accuracy within ± 5% of precipitation rate
- Uncertainty of class sizes within ± 1
- Raw data without individual correlation
- IP65 plug connector for easy installation
- Integrated ambient temperature sensor
- Controllable 100 Watt heater
Features and Benefits- Accurate - measures the size and speed of individual precipitation particles, then computes all necessary meteorological parameters
- Maintenance-free - no moving parts or collection bucket that would traditionally require regular maintenance
- Durable - continuous, precise precipitation data in all environmental conditions and integrated overvoltage protection
- Energy efficient - low power consumption and flexible separate controlled head heating
- Flexible communication - standard ports for RS-485, SDI-12, USB, and impulse for connecting to a datalogger, automatic weather station (AWS), or laptop
- Innovative design - robust aluminum housing and symmetrically arranged measuring heads prevent moisture from affecting laser band direction
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Product Data:
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Specifications| General | | | Laser diode | 780nm wavelength, 0.5 mW output power, class 1 laser | | Beam dimension | 180 x 30 W x D(mm) | | Measuring area | 54 cm2 detection area | | Rain rate | Minimum intensity: 0.001 mm/h
Maximum intensity: 1,200 mm/h | | Accuracy | ±5% (liquid)/ ±20% (solid) | | Interfaces | RS-485 (EIA-485) 1,200 to 57,600 Baud
half-duplex, 2-wire
SDI-12
USB | | Protection | IP 67, resistant to salt spray | | | | | Measurement Ranges | | | Particle size | liquid precipitation: 0.2 to 5 mm
solid precipitation: 0.2 to 25 mm | | Particle speed | 0.2 to 20 m/s | | Performance | 32 precipitation size classes
32 precipitation velocity classes | | Visibility in precipitation | measurement range (MOR) 100 to 5000m | | Temperature range | -40°F to 158°F (-40°C to 70°C)
0 to 100% relative humidity | | | | | Power | | | Power supply | 10 to 28v DC
optional heating output of the sensor head | | Current drawn | Electronics: 65 mA at 24v DC
Heating: 2/4 A;12/24v DC2 |
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