The Aurora 4000 polar nephelometer uses a programmable backscatter shutter which allows the user to set up to 17 customisable angles between 10º and 90º. The Aurora 4000 polar nephelometer provides greater insight into light scattering, allowing the analysis of parameters involved in climate studies such as the particle phase function used in global radiation balance measurements.

• New high powered LED light source increasing accuracy and reliability.
• Compact and portable (light weight).
• Reduced power consumption and a lower carbon footprint due to:
• Low powered internal heater.
• New 12v power source.
• Automated instrument calibration using zero and span gas.
• Pressure and temperature reporting.

Range: 0 to >20 000Mm-1
LDL: 0.3 Mm-1
Intensity function: 9-170°
Polar sectors: 10° - 90°, (up to 17 seperate measurements)
Temperature range: -20-45oC
Sample flow rate: 5 l/min approx
Weight: 11.4 kg
Dimensions: 170 x 700 x 215 mm (LxWxH)
Power: 100-240 VAC, 50/60 Hz or 12VDC (60 watts with heater active)

• Comm ports include.
  
  • 4 analogue outputs (2 voltage & 2 current).
  • RS232 multidrop.
  • RS232 serial port.
• Data storage

The Aurora 4000 is the only commercially available polar integrating nephelometer in the world. The Aurora 4000 uses the same three wavelength technology as Ecotech’s successful Aurora 3000 nephelometer but provides the additional benefit of being able to automatically measure scattering in different angular sectors by varying its backscatter shutter’s position.

The Aurora 4000 polar nephelometer provides more specific light scattering measurements from any angle between 10º and 90 º up to 170º, with up to 17 different angles per measurement. This extra measurement provides comprehensive data allowing a greater characterization of aerosol scattering than the basic backscatter measurement.

Superior optics

• Automatic optical reference calibration
• High powered LED light-source increases measurement accuracy
• Single light source and detector used for each sector measurement
• Facilitates a wide measuring range ( σsp <0.0 to 20 000 Mm -1)

Ease of use

• Unique in its simplicity and practicality
• Fully integrated package including; internal sample pump, RH controlled sample heater, internal calibration valves and data logger.
• Simplified automatic calibration using internal valves, ideal for remote locations.
• Fully automatic zero check or adjust, automatic span check or automatic zero & span check available in intervals of 1, 3, 6, 12, 24 hrs or weekly.
• Optional 12 VDC operation (60 watts max, 15 watts nominal)
• Data downloader and firmware upgrade software supplied on CD

Low cost of ownership

• Internal 12V heater eliminates the need for expensive external inlet heater
• Long lasting LED light source (3 year warranty on light source)