Aurora NE-400 Polar

Polar Integrating Nephelometer

The Acoem Aurora NE-400 Polar is a three wavelength integrating nephelometer and the flagship of the Aurora NE series.

Measure light scattering in up to 18 user-selectable angular sectors, using varied backscatter shutter positioning to help determine the phase function of aerosols and bring our climate research and modelling projects to life with precision data.

Features

Power with greater reliability & expandability

New, more powerful microcontroller significantly improves signal processing capabilities, speeds up operations and establishes a platform for greater future expandability

Accessibility with data at a touch

Intuitive menu system via large 7" colour touchscreen display

Speed with real-time remote monitoring

Enhanced connectivity with a standard network TCP/IP port, micro-SD card, USB port and RS232

Reliability with flow improvements

New integrated internal ball valve eliminates sample contamination

Accuracy with reduced truncation angle

Greater accuracy with reduced truncation angle & lower noise

Reliable performance in extreme conditions

Designed to perform in the toughest environment and take precise readings

See our technology in action

Schedule a free demo to get a first-hand look at how our solutions support your business.

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Resources

Aurora NE Series brochure

Aurora NE-400 Polar
Technical Specifications

Flagship three wavelength
polar integrating nephelometer

The Aurora NE-400 Polar provides measurements of integrated light scattering between 7° – 173°, with the user able to select multiple backscatter angles between the 7° to 90° starting angle of integration.

The instrument simultaneously measures at 450 nm (blue), 525 nm (green) and 635 nm (red), using the proven LED light source to enable wide and in-depth analysis of the interaction between light and aerosols.

These measurements can contribute to determining the phase function, defined as the amount of light scattered as a function of the scattering angle. The phase function is a key parameter to accurately model the influence of the aerosol scattering on the Earth’s radiative balance.

Key highlights:

Wide measurement range (0.1 to 20,000 Mm^-1)
18 angular sectors fully-integrated scattering
Automatic bypass ball valve protects against contamination of a common sampling manifold during calibration
Mass flow control enables flow to be controlled in conjunction with an internal pump.

Benefits

Fully programmable integrated scattering over multiple angular sectors
High powered multi-wavelength LED light-source increases measurement accuracy
Higher flow available via the external pump & MFC option
Access to hundreds of raw measurement parameters for customised data analysis
Simplified fully automatic & scheduled calibration using internal valves, ideal for remote locations
Robust instrument for unattended operation
24 VDC operation (120 W max with supplied mains power supply)
Automatic optical reference calibration
Internal sample heater with temperature or RH control, which you can enable to eliminate the effects of humidity
Increased light source intensity & reduced truncation angle, lower instrument noise & decreased wall scattering from internal reflections compared to previous generation Aurora 4000
LED light source is guaranteed not to fail within 3 years & often exceeds 5 years lifetime
Heat generated by the light source is reduced by using high efficiency LEDs & fans, minimising changes in sample RH
LEDs emit light at a specific wavelength eliminating the need for band pass filters
LED light source uses the same light path for each wavelength for consistency of measurement, eliminating the need for multiple PMTs & maximising light intensity
Storage & automatic backup of configuration & calibration files
Easily integrates into the Acoem Aerosol Conditioning System ACS™ 1000.