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Method 201A – Determination of PM10 and PM2.5 Emissions

Method 201A – Determination of PM10 and PM2.5 Emissions

Cyclones are designed for in-stack particle sizing applications. The advantage of using cyclones over a cascade impactor is that cyclones have an extremely high particulate collection capacity: up to 10 grams per stage, resulting in a bigger sample for accurate gravimetric and chemical analysis, longer sampling times for better averaging and less reloading for each sampling point. Apex recommends cascade impactors for doing particle size research testing.

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Description

PM2.5-10K Sampling Train Schematic with Impingers

PM2.5-10K Cyclone Kit PM 10/PM2.5

Method 201A – Determination of PM10 and PM2.5 Emissions from Stationary Sources – EPA Literature PDF

Method 201A – IsoCyclone Electronic Datasheet Powerpoint Presentation

PM10/PM2.5 set combines the in-stack measurement of particulate matter (PM) equal to or less than an aerodynamic diameter of nominally 10 (PM10) and 2.5 (PM2.5) microns from stationary sources. The sampling train and operation are identical to Method 201A except that the PM2.5 cyclone is inserted between the PM10 cyclone and the 47mm filter. The PM10 cyclone collects particulate matter greater than PM10 while the PM2.5 collects PM less than PM10 and greater than PM2.5. The in-line filter collects PM less than PM2.5.

Break-away cyclone (PM2.5-10K-NT) shown with probe and pitot. The kit does not include pitot (MPT-6-425-OFF-WC).
Break-away cyclone (PM2.5-10K-NT) shown with probe and pitot. The kit does not include pitot (MPT-6-425-OFF-WC).

Break-away style assembly (PM2.5-10K-NT) is bolted together rather than screwed together and is used for temperatures up to 538 ºC (1000 ºF). The break-away uses expendable stainless-steel bolts that can be over-torqued and broken if necessary to release cyclone closures, thus allowing you to recover PM without damaging the cyclone flanges or contaminating the samples.

The method can be used at temperatures up to 871 ºC (1600 ºF) using specially constructed high-temperature stainless-steel alloy (alloy 600).

 


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