VaisalaCeilometerCL31SecondgenerationofadvancedsinglelensopticsprovidesexcellentperformancealsoatlowaltitudesReliableoperationinallweather:unsurpassedperformanceinverticalvisibilityandclouddetectionduringprecipitationFastmeasurementenablesdetectionofthincloudlayersbelowasolidcloudbaseModulardesignforeasyinstallationandmaintenanceExtensiveself-diagnosticswithfaultanalysisApprovedanddeployedbytheUS-FAASelectedbytheNationalWeatherServiceofUSAPerformance MeasurementrangeReportingresolutionMeasurementcycle0...25,000ft((0...7.5km)5m/10ft(unitsselectable)programmable,2...120sReportedquantities Cloudhits(upto3layers)andstatusinformationCloudhits,statusandbackscatterprofileOperatingenvironment TemperatureRelativehumidityWind-40...+60 C(-40...+140 F)0...100%RH55m/sInputsandoutputs OperatingvoltagePowerconsumptionOutputs100/115/230VACmax.310WincludingheatingRS-232/RS-485/ModemITU-TV.21,V.22,V22bisMechanics Dimensions: Total MeasurementunitWeight: Total MeasurementunitHousingclassification1190x335x325mm620x235x200mm31kg12kgIP65(NEMA4)