For more than 25 years Palas has been building systems for the aerosol generation. With more than 30 different systems Palas is market leader worldwide. In particular, the high reproducibility and constancy regarding the particle size distribution and concentration of the Palas aerosol generators have to be emphasized. The Palas aerosol generators are heatable in part up to 150°C. Several types are built in pressure-resistant version and being used successfully worldwide for applications in under and overpressu...
The reproducibility of the devices has been approved by worldwide use. In order to avoid the condensation or vaporization of the particles during the particle measurement, the isothermal and isobaric particle generation and measurement is necessary.
In order to ensure that an industrial process can be controlled or even improved and optimized continually an analysis of the current situation in real time is necessary. Process data like temperature, pressure but also particle concentration and size distribution of a material flow can supply valuable information and be used for the regulation or the improvement of a process.
To estimate the effects of aerosols on health and climate, it is essential to know their chemical composition. Sampling is done using two different types of aerosol collector. The first type are filter collectors that are based on the deposition of suspended particles on surfaces; the second type are powerful aerosol collectors.
Three Steps of CEMS:
1st Step: Gas Sampling
2nd Step: Gas conditioning and treatment
3rd Step: Measurement/Calibration
In first step, the function is to get sample gas and forward to 2nd step for treatment. During this step, it cannot block the probes and cannot result condensation of moisture. So a filter online back flushing should be equipped in this part.
The filters to be used: 1, Filter is used to ensure the stability of system and reduce the maintenance
2, Filtration Grade: usually 2 or 3 micron
It has been established that organic aerosol (OA) makes up for a major fraction of fine particulate matter in all region of the atmosphere. This fraction accounts approximately for half of the total PM2.5 dry mass.1,2 Primary OA is directly emitted in the troposphere from anthropological and natural sources whereas secondary OA (SOA) is formed in-situ in the atmosphere from the oxidation of biogenic or anthropogenic gas-phase precursors and subsequent partitioning of the less volatile products into the particle...