Nephelometers provide real-time and near real-time measurements of bulk particle properties such as average amount and size. We have a variety of models suitable for different uses.

IN101T | 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.

Our basic nephelometer 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.

We suggest using it where 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.

Model

Forward & Back Scatter measurements

3 wavelenghts

High Speed Fan

Feedback Flow Control System

Multiple Size Bins

Determine Size Distribution

Suggested Use

IN101T

For situations where higher pressure intake is required: high altitudes, clean condition, or long inlet tubes.

IN102 | Size Scanning
Nephelometer

The  IN102 Size Scanning Nephelometer lets you select the size of aerosol you wish to sample in the range  from PM2.5 to PM10.  Our feedback flow control system makes this possible.  We use a sharp cut off cyclone inlet a custom made smart blower (fan) and carefully monitor and adjust the flow rate to achieve this versatility.

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. 

Model

Forward & Back Scatter measurements

3 wavelenghts

High Speed Fan

Feedback Flow Control System

Multiple Size Bins

Determine Size Distribution

Suggested Use

IN102

High precision measurements under all conditions for various size cut-offs for diverse AQ applications.

IN102Ex | 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 to PM10.  The additional range of the measurements allows us to derive the full particle size distribution. We use the same feedback flow control system as described above for the IN102.  See the video at the top of this page for a discussion of its capabilities and a demonstration of its ability to derive a size distribution.

AirPhoton IN102Ex Retrieves Aerosol Size Distribution!
​We are very proud to be able to demonstrate the capability of our IN102 Extended range nephelometer to retrieve a full aerosol size distribution.  See the video for a discussion of the instruments capabilities and a demonstration of our size distribution retrieval.  

Model

Forward & Back Scatter measurements

3 wavelenghts

High Speed Fan

Feedback Flow Control System

Multiple Size Bins

Determine Size Distribution

Suggested Use

IN102Ex

High precision measurements under all conditions for various size cut-offs with ability to obtain size distribution. 

CR100 | Clean Air Reference System CR100 model

Airphoton Nephelometers are designed for  stable and low noise operation. For more accurate operations a modular clean air reference system is available for separate purchase as an attachment to the Independence nephelometer models.

The CR100 clean air reference system is designed to compensate for potential calibration drift of the IN101 or IN102 nephelometer. The CR100 pumps ambient air through a high quality HEPA filter that removes aerosol particles from the air to a level that the clean air can be used as a Rayleigh scattering reference for the nephelometer. The CR100 can be used as a semi-permanent attachment to the body of the  nephelometer or as a portable bench top reference system. The figure at left shows the CR100 system mounted on the body of a IN101 nephelometer.

Instrument Carrying Case Accessory

​A custom-made carrying case is available for purchase to use with the IN101 nephelometer and its accessories. The case dimensions are: 31.3″x20.4″x12.2″ and is outfitted with wheels and a retractable handle for easy transport. Figure 9 shows the CC101 carrying case with a IN101 nephelometer and its accessories including the CR100 clean air system.