HTabsOverviewIntegrating Nephelometers: Optical instruments for real-time particulate measurement AirPhoton nephelometers provide real-time measurements of airborne particulates. Nephelometers use light scattering to measure bulk properties of aerosols including overall size and concentration. We achieve a high degree of sensitivity due to a large angular range and design features which minimize stray light. They are weather hardened for field deployment and can operate over a large range of heat and humidity. They are deployed globally by both the SPARTAN network and NASA’s MAIA mission. We produce several different models of nephelometers. Our more advanced models allow for data collection at multiple size cuts. When combined with the GRASP retrieval algorithm these instruments provide a wealth of information beyond what is possible with a standard nephelometer. Our nephelometers offer described on this website can be used with our communications module allowing for internet or cell network control and monitoring of the instrument. Our philosophy is to collect and measure particles under ambient conditions. Yet, we can, at additional cost and upon request, provide a nafion tube system to dry the aerosols. IN101T: AirPhoton Basic Integrating Nephelometer AirPhoton IN101T is our basic Integrating Nephelometer. It is generally used for simple operations such as determing the bulk properties of aerosols including the overall amount and size of the particles. This instrument is highly valued for its accuracy and reliability, providing essential data for environmental monitoring and research. It is designed for robust operation under a wide range of conditions. While its rugged design allows for field deployment, it is also a highly sensitive instrument which can be used in the laboratory or modified for use in aircraft. In this regard, the IN101T is highly versatile and can work in different environments and for different purposes. The IN101T is recommended to use for measurements of all particle sizes at normal ambient conditions as well as for situations where higher pressure intake is required – i.e. high altitudes, clean condition or longinlettubes. IN102: AirPhoton Size Scanning Nephelometer: The IN102 introduces a cyclone inlet to allow for sampling particles in a specific size range. We carefully monitor and adjust the instrument flow rate. In combination with the cyclone inlet, this allows us to measure particles separately at PM2.5 and PM10, the sizes most critical for air quality studies. This capability significantly enhances our precision and effectiveness in environmental monitoring and research applications. Like the IN101 model it is small and compact and is enclosed in an environmentally protected case, ready for outdoor deployment in rugged conditions. Power requirements are 40W @ 120 VAC (60W Max) and input power options include: 110/240 VAC,50/60Hz with provided power supply, and regulated 12VDC from sampling station with provided power connector. Other powering options can be made available upon request such as operating from batteries or solar power. Optional heaters are available at the expense of additional power consumption. IN102Ex: AirPhoton Extended Range Size Scanning Nephelometer: The IN102Ex Size Scanning Nephelometer extends the capabilities of our IN102 nephelometer aerosol to sample in the range from PM1 size bin to PM10. The additional range of the measurements allows us to derive the full particle size distribution, making this model unique for scientific research. We use the same feedback flow control system as described above for the IN102. It is recommended for high precision measurements for various size cut-offs under all conditions for air quality & health and climate applications. The enhanced capabilities of the IN102Ex provide researchers with more detailed and precise data, which is crucial for advanced research in these domains. We are very proud of this advancement, demonstrating the capability of our IN102 Extended range nephelometer to retrieve a full aerosol size distribution. Polar Imaging Nephelometers: High-end instrument for precise particle characterization The PI Neph (Polar Imaging Nephelometer) is a high grade laboratory instrument designed for an in-depth understating of particulate properties. It provides a full particle characterization including the size distribution and the complex refractive index from hyperangle scattering measurements. Amongst its capabilities, the PI-Neph includes: measuring light scattering from 3° to 176°, angular resolution of less than 1°, standard configuration of 2 wavelengths but customizable for 1-3 wavelengths, polarization and a GRASP™ included software package. GRASP software included package contributes to the retrieval of parameters such as size distribution, percent sphericity or complex refractive index. In addition, it can provide an overview of the multi-source retrieval capabilities of the algorithm and suggest exploring further analysis. The fact that the PI Nephelometer brings so much capabilities also makes it more complex to use. In this regard, the learning curve to get to most of his capabilities are accompanied with an extensive instruments training. In sum, the instrument will not only provide a deeper understanding on particulate matter but also will introduce trainees to GRASP software capabilities. Pl Neph: AirPhoton Polar Imaging Nephelometer Resources: IN101T-data-sheet.pdf IN102-data-sheet.pdf IN102Ex-data-sheet.pdf PI-Neph-data-sheet.pdf SpecificationSpecification: IN101T: Dimensions: 9″ x 10″ x 24” Mass: 6.7 Kg Operating temperature: -30 to +45oC Wavelengths: 450, 532, and 632 nm Angular range: 7 to 90o ; 90 to 170o Full scattering = forward + back scattering Standard range: 0.0-3,000Mm-1 Extended range: 20,000Mm-1 (upon request) Lower detectable limit: <0.15 Mm-1 (60 sec AVG); < 0.06 Mm-1 for Backscattering (60 sec AVG) Clean air reference option provides automatic zero for span calibration Data Interfaces: 4GB SD card, RS485 (optional) IN102: Dimensions: 9″ x 10″ x 24” Mass: 6.8 Kg Operating temperature: -30 to +45oC Wavelengths: 450, 532, and 632 nm Angular range: 7 to 90o ; 90 to1 70o Full scattering = forward + back scattering Standard range: 0.0-3,000Mm-1 Extended range: 20,000Mm-1 (upon request) Lower detectable limit: <0.15 Mm-1 (at 60 sec AVG); < 0.06 Mm-1 for Backscattering (60 sec AVG) Clean air reference option provides automatic zero for span calibration Data Interfaces: 4GB SD card, RS485 (optional) IN102Ex: Dimensions: 9″ x 10″ x 24” Mass: 6.8 Kg Operating temperature: -30 to +45oC Wavelengths: 450, 532, and 632 nm Angular range: 7 to 90o ; 90 to1 70o Full scattering = forward + back scattering Standard range: 0.0-3,000Mm-1 Extended range: 20,000Mm-1 (upon request) Lower detectable limit: <0.15 Mm-1 (at 60 sec AVG); < 0.06 Mm-1 for Backscattering (60 sec AVG) Clean air reference option provides automatic zero for span calibration Data Interfaces: 4GB SD card, RS485 (optional) Pl Neph: Operational temperature: 5 to 40℃ Wavelengths: Up to 3 in the range of 400-680 nm Polarization: P11 and P12 measurements. Other stokes parameters options available Angular Range: At least 100 angles from 5-175° Range: 0.0 to >20000 Mm-1 Lower detectable limit: < 1 Mm –1 for phase function measurements Programmable flow rate: Available Flow range: 2 to 20 lpm & Optional Particle size selection: Optional cycling up to 4 cut off sizes External pump option: Available Automatic Zero and Span check: Automatic Zero with clean air system. GRASP software. Included for span calibration Light source: Laser Dimensions: 200*100*50cm Weight: < 30 Kg Storage memory: Internal SSD hard drive Data Transfer: USB, Ethernet, wifi Environmentally rugged: For Indoor or Aircraft Use Further InfoDocuments: IN101T-data-sheet.pdf IN102-data-sheet.pdf IN102Ex-data-sheet.pdf PI-Neph-data-sheet.pdf
