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OTT Parsivel² Laser Present Weather Sensor

OTT Parsivel² Laser Present Weather Sensor
Product #: 70.210.002.3.0
Brand: OTT
Unit Price Contact Hach

Direct and simultaneous physical measuring principle of hydrometeors

The Parsivel² captures both the size and speed of falling particles by applied laser extinction method.

Classification of each single hydrometeors

Classification into one of 32 separate size and velocity classes and particles distribution in numbers.

Precise particles size measurements and uncertainty of rain intensity with +-5% according WMO guide line

Distinction of type of present weather and calculation of the type, amount, intensity and kinetic energy of the precipitation, the visibility in the precipitation, and the equivalent radar reflectivity.

Life time calibration and drift free measurement

Automatic compensation of temperature induced error and laser fluctuation emittance.

Unattended and maintenance free

Automatic compensation of contamination on optics by dust and aerosal layers.

Specifications

*Parameters Measured: Precipitation type
Intensity
Drop size distribution
Radar reflectivity
Accuracy: ± 1 size class ( 0.2 - 2 mm)
± 0.5 size class ( > 2 mm)
± 5 % (liquid) /± 20 % (solid)
Classification: 32 size and 32 velocity classes
Dimensions: 26.4 x 23.6 x 4.5 in (670 x 600 x 114 mm)
Heating capacity: 50 W (default)
100 W (adjustable)
IEC/EN 60825-1: 2014
Installation Requirement: 2 in pipe (50.8 mm), Ø 1.97 in - 2.44 in (Ø 50 - 62 mm)
Intensity Threshold: 0,001 - 47 in/h (0,001 - 1200 mm/h)
Interface: RS-485 for all values incl. spectral data (EIA-485; 1,200 - 57,600 Baud) SDI-12 for calculated values USB for PC connection (configuration and service) Output relay for pulse output of the precipitation amount in 0.1 mm/pulse with max. 2 Hz pulse rate
IP Rating: IP65
Kinetic energy: 0 - 999,999 J/(m2h)
Laser Class: 1
Measurement technology: Laser optical
Measuring range: Size:
liquid precipitation: 0.008 - 0.315 in (0.2 - 8 mm)
solid precipitation: 0.008 - 1.0 in (0.2 - 25 mm)
Velocity:
0.65 - 65.6 ft/s (0.2 - 20 m/s)
Velocity:
0,65 - 65.6 ft/s (0.2 - 20 m/s)
Measuring surface: 7.1 x 1.2" (180 x 30 mm)
Power Consumption: 65 mA@24 V DC
Power Output: 0,2 mW
Power supply: 10 - 28 V DC, reverse polarity protection Optimum heating output of the sensor head heating system can be guaranteed with a power supply voltage of at least 20 V DC.
Product highlights: Simultaneous measurement of 32 classes for particle sizes and velocities
Protection: De-icing protection:
Microprocessor controlled heating
Lightning protection:
Integrated
Radar reflectivity: - 9.999 - 99.999 dBz
Relative Humidity: 0 - 100 %
Reports: WMO 4680/4677 (SYNOP)
4678 (METAR/SPECI) and NWS tables
Special Notes: Proof under laboratory conditions using an OTT test system with reference particle simulation of 0.02 in (0.5 mm), 0.04 in (1.0 mm), 0.08 in (2.0 mm) and 0.16 in (4.0 mm)
ASDO configuration software supplied (basic version)
Standards: EN 61326-1: 2013, CE compliant 2014/30/EU, CE compliant
Temperature Range: -40 - 158°F (-40 - 70 °C)
Types of precipitation: drizzle, rain, hail, snow ˂gt/˃ 97 % (compared to a weather observer) Snow depth intensity (volume equivalent)
Visibility in precipitation: 0 - 12.4 miles (0 - 20.000 m)
Wavelength: 650 mW
Weight: max. 14 lbs (6.35 kg)