OTT Parsivel2 Laser-Optical Disdrometer for Measuring Particle Size and Velocity of All Precipitation Types

OTT Parsivel2 Laser-optical disdrometer for measuring particle size and velocity of all precipitation types

The OTT Parsivel2 is a modern present weather sensor for comprehensive measurement of all precipitation types. The Parsivel2 captures both the size and speed of falling particles, classifying them into one of 32 separate size and velocity classes.

Measurement intervals on the Parsivel2 can be set anywhere from every 10 seconds to an hour. Once received, a fast signal processor calculates measurement data to determine precipitation type, amount, intensity, visibility, kinetic energy, and the equivalent radar reflectivity. Using standard interfaces, both the calculated and spectral data can be output to a datalogger, automatic weather station, or PC.

Meteorology 180 x30mm(54cm Measuring area - - - Sensor Technology — — — — — — Features andBenefits — — — Applications Accurate andVersatile –OTTParsivel 2) 1) Specifications - - Precipitation Measurement - - Measuring ranges sleet, hail) rain, mixedrain/snow, snow, snowgrains, 8 precipitation types(drizzle,drizzle/rain, Types ofprecipitation ------ASDOconfigurationsoftwaresupplied (basicversion) conditionsusinganOTTtestsystemwithreference particle simulationof0.5mm,1.02.0mmand4.0 Proofunderlaboratory — — — — — — — — — 1 (IEC/EN60825-1A2:2001) 1 (21CFR1040.10and1040.11) class: Laser Output power:0.5mW Wavelength: 780nm, Optical sensor, laserdiode ± 0.5sizeclass(>2mm) ± 1sizeclass(0.2to2mm) esrmn accuracy Measurement 32 sizeandvelocityclasses velocity: Particle solid precipitation: 0.2to25 mm liquid precipitation: 0.2to 5 mm Particle size: Easy-to-use: simplesetupandconfigurationusingPCsoftware andUSBinterface controllable sensorheadheating Energy-efficient: with integratedlightningprotection Durable: continuousandprecise precipitation datain allenvironmental conditions rain gauges Maintenance-free: nomovingpartsorcollectionbucket,unliketippingbucket meteorological parametersare derived measurement areathe isrecordedin andfrom thesemeasurements allrelevant Accurate: therelative sizeandspeedofeveryprecipitation particlethatpasses spectra data central component in an early flood warning system central componentinanearlyfloodwarning Ground truthradars:usingdrop sizedistribution(DSD)obtainedfrom Parsivel Early FloodWarning: whencombinedwithwaterlevelsensors,theParsivel with generalvisibilitymeasurements toprovide anaccuratepicture ofroad conditions Monitoring RoadConditions:precipitation amountandcompositionare combined of 32 classes, asspecifiedbythe World Meteorological Organization(WMO) intensity. and volume, size, Precipitation sizeandtypeare eachcalculatedintoone Precipitation Measurement: completeprecipitation measurement includingparticle

0.2 to20m/s 2 )

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Tel: 800-949-3766 ·Fax:970-461-3921www.hachhydromet.com 5600 Lindbergh Drive·Loveland,CO80539 HACH Hydromet

± Accuracy 0.001 to1,200mm/h Precipitation intensity - - Power consumption - - Power supply 10 secondsto60minutes Measurement interval 9.9 to99dBz±20% Radar reflectivity Z 100 to5,000m±10% inprecipitationVisibility (MOR) 4678 (METAR/SPECI) andNWStables WMO 4680/4677(SYNOP), Reports - - - - 5 %(liquid)/± Heating: 50/100W(4A@12/24VDC) Electronics: 1.5W(60mA@24 VDC) Heating: 12/24VDC Electronics: 10to28VDC precipitation amount 20 %(solid) 2

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- - - 2 inchpipe,Ø50to62mm Installation IP 65 Protection 0 to100%relative humidity – 40to+70°C Environmental conditions 670 x600114mm Dimensions (HxWD) 6.4 kg Weight Seawater-resistant aluminium Material - Interfaces (configurable) - - - - 0.1 mm(2Hz) Pulse output: SDI-12 forcalculatedvalues (1,200 to57,600baud) RS-485 forallvaluesincl.spectraldata (configuration andservice) USB 2.0forPCconnection

/ 0.01 mm(20Hz) 2)