Aurora 4000 Multi angle Three wavelength Turbidity Meter

Instrument Introduction:

The highly sensitive integral Aurora series aerosol turbidity meter developed by Ecotech is a widely used and cost-effective product in the market. It is suitable for long-term observation of atmospheric aerosol scattering coefficients and is an effective instrument for monitoring climate, dust, ash, and air quality.

The Aurora 4000 turbidity meter is a commercially available multi angle three wavelength turbidity meter. Unlike ordinary integral turbidity meters, it measures the standard particle scattering coefficient of aerosols online. The Aurora 4000 turbidity meter has up to 18 angle zones in the range of 10-170 °, which can be better used for studying backscattering and forward scattering, and for deeper measurement of the light scattering characteristics of particles.

The Aurora 4000 model has a unique multi angle measurement function that can accurately measure the impact characteristics of particulate matter on atmospheric radiation balance, meeting the data needs of climate change research excellently; In general air quality research, such as comparing pollution sources, measurement data can provide real-time information on the optical properties of particulate matter, and more accurately correct truncation errors in integration angles and non ideal light source errors.

Aurora 4000 is a three wavelength turbidity meter with measurement wavelengths of 525nm, 450nm, and 635nm, and a measurement scattering angle range of 9-170 °.

Application areas:

*Visibility observation, suitable for long-term observation of dust, fog, and haze;

*Measurement of aerosol scattering coefficient, applied to the study of atmospheric radiation balance and climate change;

*Observation of smoke from biofuel combustion;

*Research on fine particulate matter (PM2.5);

*Visibility measurement of airports, highways, and roads;

*Monitoring of forest and shrub fires.

Technical features:

*Simple design, easy to maintain and upkeep;

*Compact structure, lightweight, and easy to operate;

*Automatic reference optical calibration;

*Automatic pressure and temperature compensation function;

*Enhance the intensity of the light source to improve measurement accuracy;

*LED light source has a long service life, up to 5 years;

*Different standard gases can be selected to automatically complete instrument calibration: CO2, SF6, FM-200, R-12, R-22, R-134 or user-defined gases;

*Capable of deploying monitoring at high altitudes;

*Large measurement range (0 to 20000Mm-1);

*Automatic zero/mark check and adjustment function: can perform automatic zero check/adjustment and mark check/adjustment at intervals of 1, 3, 6, 12, or 24 hours (mark check can also be performed once a week);

*Built in 12V sample gas heater for temperature and humidity control of the sample gas. User set humidity threshold (RH:<30% to<90%) to eliminate humidity interference;

*Provide CDs of data downloaders and hardware upgrade software;

>Technical parameters:

*Measurement parameters: Light scattering coefficient of particulate matter (wavelengths 450525 and 635nm);

*Measurement range: 0 to 20000Mm-1;

*Minimum detection limit: Both total scattering and backscattering are 0.3 Mm-1 (optional 0.1 Mm-1) (1-minute average);

*Angle resolution: The angle is increased by 1 °, with an accuracy within 0.3 °;

*Total scattering angle: 9 °~170 ° or backscatter angle: 90 °~170 °;

*Secondary measurement: sample gas temperature, chamber temperature, RH, and sample gas pressure;

*Sample gas flow rate: approximately 5L/min;

*Working environment: Temperature: -20 ℃ to 45 ℃;

*Relative humidity: 10% to 95%;

*Calibration: Calibration gases can be selected from CO2, SF6, FM-200, R-12, R-22, R-134, or user-defined gases;

*Output: 4 analog outputs (2 voltage, 2 current) and RS232 multi-point serial port output;

*Filtering: Kalman digital filtering, sliding average filtering (30 seconds) or no filtering;

*Optics: Reference brightness measurement;

*Light source: Stable LED light source (patent number: US7671988);

*Wavelength (optional): 450nm (blue), 525nm (green), and 635nm (red);

*Power supply: 110-240VAC, 50/60Hz or 12VDC, with heating device for 60 watts;

*Storage parameters: date and time, (635525 and 450nm), air temperature, shell temperature RH、 Pressure and state;

*Maximum storage capacity: 5-minute average over 48 days or 1-minute average over 10 days;

*Dimensions: 700mm x 170mm x 215mm (length x width x height);

*Weight: 11.2Kg;

*Optional: External pump, solar panel, roof mounting flange, insect and rain proof cap, gas calibration component, wall suspension bracket.