Aerosol Diluters
Aerosol diluters are specialized systems designed to reduce particle and aerosol concentrations in a controlled manner before the sample enters a measurement instrument. When the particle concentration in a sample exceeds the operating range of a particle counter or characterization system, precise and stable dilution of the airflow is required without significantly altering the characteristics of the particles being measured.
In the Aerosol Diluters category, you can find professional aerosol dilution systems for research, emissions monitoring, particle measurement, engine and combustion research, nanoparticle studies, environmental research, and calibration of measurement systems. The category includes standard aerosol diluters as well as thermodiluters for applications that also require thermal treatment of the aerosol sample.
These systems are suitable for research laboratories, universities, industrial facilities, research institutes, emissions laboratories, particle measurement equipment manufacturers, and organizations involved in advanced aerosol research.
What Is an Aerosol Diluter?
An Aerosol Diluter is an instrument that reduces the particle concentration in an air sample according to a known and controlled dilution ratio.
For example, when the particle concentration is too high for a particle counter, the sample can be passed through an aerosol diluter. The system mixes the sample with clean air or performs another controlled dilution process so that the concentration reaching the measurement instrument falls within its operating range.
After the measurement, the dilution ratio can be used to calculate the original particle concentration in the sample.
Why Is Aerosol Dilution Needed Before Measurement?
Every particle measurement instrument has a concentration range within which it can provide reliable measurements.
When particle concentration is too high, effects such as coincidence may occur, meaning that several particles pass through the measurement zone at the same time. In this situation, the instrument may detect multiple particles as a single particle or reach its maximum measurement limit.
An aerosol diluter reduces the concentration before measurement and helps preserve data quality.
Using a diluter can help with:
- Extending the measurable concentration range
- Preventing overload of the particle counter
- Improving measurement reliability
- Measuring samples with high particle concentrations
- Adjusting the sample to the operating range of the instrument
- Creating consistent and repeatable measurement conditions
- Integrating highly concentrated samples into existing research systems
Aerosol Dilution at High Particle Concentrations
High particle concentrations are particularly common in combustion processes, engine emissions, industrial processes, laboratory aerosol generation, and testing of particle sources.
In these situations, it is not always possible to introduce the sample directly into a particle counter or particle size distribution measurement system.
An aerosol diluter reduces the concentration to a level that can be measured reliably while preserving, as much as possible, the particle size distribution and other characteristics of the sample.
Aerosol Diluter 3332
The Aerosol Diluter 3332 is designed to dilute aerosol samples with high particle concentrations before measurement.
This type of system can be useful when working with particle counters or characterization systems that cannot directly handle the original particle concentration.
Combining a diluter with a measurement system effectively extends the concentration range that can be investigated without replacing the measurement instrument itself.
Aerosol Diluter 3302A
The Aerosol Diluter 3302A is also used to reduce particle concentrations in an aerosol before introducing the sample into a measurement system.
The system is suitable for research applications in which the sample is relatively concentrated but the measurement instrument requires a lower concentration for proper operation.
Diluters of this type can be integrated into measurement setups that include CPC instruments, particle counters, particle size distribution systems, and advanced aerosol research equipment.
Thermodiluters for Aerosol Samples
In some applications, simple dilution of the sample is not sufficient.
A Thermodiluter combines dilution with thermal treatment and is used, among other applications, in studies that aim to distinguish between volatile and non-volatile components of an aerosol.
In such a process, the sample can be heated under controlled conditions to reduce or evaporate volatile components, after which the remaining particle population can be measured.
This type of system is particularly useful in emissions research, combustion studies, and measurements of particles generated by engines and other thermal sources.
Rotating Disk Thermodiluter 379020A
The Rotating Disk Thermodiluter 379020A is designed for controlled dilution of particle samples and supports measurements involving complex samples and high particle concentrations.
Rotating Disk technology enables controlled dilution of the sample flow and helps adjust it to the measurement instruments located downstream in the system.
Systems of this type are particularly useful in emissions and particle research where precise control of sampling conditions is required.
Aerosol Diluters in Emissions Research
One of the main applications of aerosol diluters is Emission Testing.
Emissions from engines, combustion systems, and industrial processes may contain very high particle concentrations. Direct measurement of such concentrations may exceed the operating range of CPC instruments or particle sizing systems.
For this reason, the sample can be diluted before measurement.
A complete system may include:
- Emission source
- Sampling system
- Aerosol diluter
- Flow control
- CPC or particle counter
- Particle sizing system
- Data acquisition and analysis system
This makes it possible to perform measurements even when the original particle concentration is significantly higher than the operating range of the measurement instrument.
Aerosol Diluters in Engine and Combustion Research
Engine and combustion research is another field in which dilution systems are widely used.
Particles generated by combustion engines, burners, energy systems, and thermal processes can occur at extremely high concentrations.
Controlled dilution makes it possible to investigate:
- Particle number in emissions
- Particle size
- Particle size distribution
- Effect of fuel type
- Effect of combustion conditions
- Efficiency of emission reduction systems
- Effect of filters and exhaust gas treatment systems
Professional Solutions for Aerosol Dilution
Meteo-Tech offers advanced solutions for aerosol dilution and particle measurement, including Aerosol Diluters and Thermodiluters designed for research, development, emissions monitoring, and advanced particle characterization systems.
These systems are suitable for aerosol research, nanoparticle measurement, industrial applications, engine research, combustion processes, and research laboratories. They enable samples with high particle concentrations to be adjusted to the operating range of measurement equipment in a controlled, stable, and repeatable manner.