Aerosol particles in the atmospheredirectly influence the earths radiativebalance by absorbing and scattering thesolar radiation and indirectly, by changingthe clouds microphysical properties.The amount of sunlight reaching the earths surface,rather than being scattered back to space, is an importantparameter to accurately model the influence of aerosolscattering on the earths radiative balance.The Aurora 3000 provides this measurement by reportingboth the integrated and back-scattered coefficient.Using a LED light source, the Aurora 3000 simultaneouslymeasures at 525 nm (green), 450 nm (blue) and 635nm (red) to enable wide and in-depth analysis of theinteraction between light and aerosols.The ACOEM Ecotech Aurora 3000 includes backscattermeasurements that allows both standard integratingmeasurements of 9 - 170 and also the back scatter 90 - 170.APPLICATIONS Studies on backscatter and forward scatter Scattering enhancement factor (eg. in combination with theEcotech ACS) Scattering Angstrom exponent calculations Determination of single scattering albedo Easy integration with the ACOEM ACS 1000. BENEFITS Simplified automatic calibration using internal valves, ideal forremote locations Fully automatic zero check or adjust, automatic span checkor automatic zero and span check available in intervals of1, 3, 6, 12, 24 hrs or weekly Fully integrated package including internal sample pump, sampleheater, internal calibration valves, zero air pump and data logger Internal sample heater with temperature or RH control, whichcan be enabled by the user to eliminate the effects of humidity(RH: < 30 to < 90 % ) 12 VDC operation (60 watts max, 14 watts nominal) Holds up to 33 days of 5 minute data averages, 6 days of 1 minutedata, or every measurement cycle (3 seconds) Our LED light source is guaranteed not to fail within 3 years, andoften exceeds 5 years An LED light source uses the same light path for each wavelengthensuring consistency of measurement, eliminating the need forPMTs and band pass filters maximizing light intensity Remote control through serial interface Suitable for high altitude applications.COMMUNICATIONS & DATA LOGGINGOutputs: 4 analog outputs (2 voltage & 2 current) and 2 x RS232 serial ports Filtering: Kalman (digital adaptive filter), moving average (30 seconds) or no filter Stored parameters: Date & Time, ssp (635, 525 and 450 nm), Air temperature, Enclosure temperature,RH, Pressure instrument status, raw measure counts or measure ratios, Sample flow for MFC option Capacity: Maximum of 33 days of 5 minute averages, or 6 days of 1 minute averaged data , 2000 lines of data if allmeasurement cycles (3 seconds) Data Collection: Airodis Demo analysis software provided freeOPTIONS MFC and Automated Ball Valve Roof flange kit and rain cap with insect screen Gas calibration kit and wall mount bracket Exhaust tubing kit Aerosol dryer ACS 1000 interfacing.LOWER COST OF OWNERSHIP Fully automatic zero and span calibrations Low power internal 12 V sample heater Long lasting low power LED light source No bandpass filters to be replaced Easy to clean measurement cell.

• Facilitates a wide measuring range (0 to 20,000 Mm-1).
• Easy automatic calibration, ensures repeatability of measurement
• Single light source and detector used for all wavelengths
• Automatic optical reference calibration