PM_2.5 Sharp Cut Cyclone

SCCA

SCCA WITH AN SSI2.5 INLET ATTACHED

SCCA DISASSEMBLED for CLEANING

SCCB

Applications

• Ambient PM_2.5 sampling
• Indoor Air Quality sampling
• Speciation sampling
• PM_2.5"Type 3" sampling

Features

• Dry sampling (no oil, such as in PM_2.5 FRM WINS Impactor)
• Long cleaning interval
• Atmospheric and chemically inert clear anodize finish on aluminum alloy
• Field cleanable

Downloads

• Download the latest version of the instruction manual.
  Click here and then click on manual # 10.
• Microsoft Excel calculator containing:
  1. Excel calculator and graph of SCC vs D50 (flowrate input)
  2. Excel calculator and graph of VSCC vs D50 (flowrate input)
  3. Graph of VSCC vs EPA WINS impactor

The WINS impactor is an EPA design standard specified in the current FRM for PM_2.5 sampling¹. The design has been laboratory tested for its intended purpose^2,3 and field tested^4.

The referenced testing has proven its utility as a second stage PM_2.5"cut" device for both single channel and four day sequential sampling.
For sampling strategies requiring intervals longer than four days, without cleaning the Sharp Cut Cyclone offers the only viable alternative. Real time PM_2.5 monitors will require two to four week intervals between cleaning. Speciation samplers operating at 16.67 lpm will be able to utilize this dry technology.

Because of this perceived need for a non impactive - but WINS equivalent - device, the SCC was developed by BGI and tested by Dr. Lee Kenny^5,6
of the Health and Safety Laboratory, Sheffield, UK. The SCC design was based upon previous, peer reviewed works. Both the WINS and the SCC were rigorously laboratory and field tested. For short sampling periods there is no perceptible difference between the WINS and the SCC. Over longer (than EPA Required) periods, the SCC proved to be the more precise instrument.

A scientific paper on this project is in press. For an abridged version of the test results, click on reference No. 4 below.

The SCC is an exact "plug in" replacement for the WINS. Any sampling instrument using the EPA standard WINS may substitute the SCC.

References

1. Federal Register, 40 CFR Part 50, July 18, 1997
2. "Development and Evaluation of Sampling Components for Measuring Particulate Matter under 2.5 micrometers," Peters et al, RTI Report. EPA Contract No. 68-D5-0040, RTI Project. 6360-001, January 1996
3. "Modification and Evaluation of the WINS Impactor." Peters et al, RTI Report. EPA Contract No. 68-D5-0040, RTI Project. 6360-007, September 1996
4. "Investigation of the Effects of Loading on PM 2.5 Selectors," Kenny, L.C., HSC Report No. IR/L/A/98/13. October 1998
   (Click here to download report in Adobe Acrobat format)
5. L.C. Kenny et al. "Characterization and Modeling of a family of Cyclone Aerosol Preseperators," J. Aerosol Sci. 28(4), pp. 677-688, 1997
6. L.C. Kenny et al. "Development of a Sharp-Cut Cyclone for Ambient Aerosol Monitoring Applications" J. Aerosol Sci. & Tech. 32(4), pp 338-358, April 2000.