Nikira open circuit aerosol extinction analyzer

The new generation of scientific research grade air visibility and aerosol measurement instruments.

Open Path Optical Extinction Analysts (OEAs) can accurately measure the optical extinction coefficient and visibility in the air. By combining the measurement of open-loop cavity decay with a reference scheme, OEAs can measure the optical extinction coefficient caused by environmental aerosols with higher accuracy, less sample processing, and almost no drift.

No calibration required, no sampling effects, no data assumptions

Real time full aerosol optical extinction coefficient and visibility measurement

Research and Development Background:

Extinction coefficient and visibility are key parameters for air quality characteristics and aerosol research. Usually, these data are estimated through a set of scattering data assumptions about aerosol size, shape, and albedo. Even worse, the instruments currently available on the market tend to exclude larger volume particles (i.e. humidified aerosols) when extracting aerosol samples, which underestimates the extinction coefficient and visibility.

Product Introduction:

NikiraOpen circuit aerosol extinction meterIt can directly and real-time measure aerosol optical extinction and environmental visibility with almost no sampling effect and no need for calibration.

How to achieve it?

NikiraThe cavity ringdown spectroscopy (CRDS) technique is used to directly measure the absolute optical losses of aerosols using first principles. In addition, the open circuit optical cavity design ensures no extraction loss in air sampling. Therefore, the instrument can measure the real environmental optical extinction coefficient and visibility without ignoring larger aerosol particles. The solution from Nikira Laboratory utilizes patented technology from the National Oceanic and Atmospheric Administration (NOAA) in the United States, which enables periodic self calibration and drift correction without the need for standard gases, enabling long-term on-site monitoring.

The instrument can store data continuously for more than 2 years internally, and can be accessed through USB or cellular modem, powered by battery or AC electricity.

OEAsAdvantages:

• Directly applying first principles to measure optical extinction coefficient and visibility

• Self calibration and drift correction can achieve long-term on-site monitoring

• Open circuit sampling provides more accurate results

• No consumables, reducing instrument operating costs

• Very low maintenance costs and failure rates

• No need for external pump, lower power, lower operating costs

• Can measure multiple wavelengths

OEAsApplication:

• airport

• Highways with low visibility

• Highway tunnel

• Military applications

• Air pollution monitoring

• Air quality monitoring

• Urban pollution monitoring

• Aerosol Research Community

• Environmental Research Network

• Climate change research

• national park

• forest district

• Volcanic area

• Desert region

• Ecological Physiology Research

• Chemical Manufacturing and Research

• Semiconductor Manufacturing and Research

• Purification room

Performance indicators:

Wavelength: 450 nm, 532 nm, 632 nm, 780 nm, 850 nm, 1065 nm, 1650 nm (customizable wavelengths)

Dynamic range: 0~>3000 Mm^-1

Accuracy/Precision:+/- 1 Mm^-1(nominal)

Data rate: 1 second

Measurement technology: Open circuit cavity ring down spectroscopy technology

Calibration: Self calibration

Consumables: None

Temperature range:- 5 ~ +50°C

Humidity range: 0~99%, no condensation

Size: 49 cm x 33 cm x 18 cm

Weight: 7.7 kg

Power: 35 W (battery or AC)

Instrument memory:>1 million (M) readings (2 years of continuous data)

Ordering information:

OEA-450Single wavelength 450 nm system

OEA-532: Single wavelength 532 nm system

OEA-632Single wavelength 632 nm system

OEA-780Single wavelength 780 nm system

OEA-850Single wavelength 850 nm system

OEA-1065Single wavelength 1065 nm system

OEA-1650Single wavelength 1650 nm system

OEA-MCustom wavelength system

Manufacturer: Nikira Labs, USA