Volume 68 Issue 5
May  2024
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XU Xiao, CHI Shunxin. Development of Calibration Equipment for PM2.5/PM10 Separators with Variable Flow Rates[J]. Metrology Science and Technology, 2024, 68(5): 65-69. doi: 10.12338/j.issn.2096-9015.2024.0040
Citation: XU Xiao, CHI Shunxin. Development of Calibration Equipment for PM2.5/PM10 Separators with Variable Flow Rates[J]. Metrology Science and Technology, 2024, 68(5): 65-69. doi: 10.12338/j.issn.2096-9015.2024.0040

Development of Calibration Equipment for PM2.5/PM10 Separators with Variable Flow Rates

doi: 10.12338/j.issn.2096-9015.2024.0040
  • Received Date: 2024-02-20
  • Accepted Date: 2024-02-28
  • Rev Recd Date: 2024-03-06
  • Available Online: 2024-05-16
  • Publish Date: 2024-05-18
  • The widespread use of low-flow-rate separators in particulate matter monitoring has highlighted a need for traceable calibration. This study focuses on developing calibration equipment for variable flow rate separators. By designing various aerosol atomizing nozzles and incorporating cyclone mixing and isokinetic sampling techniques, the calibration equipment was developed for PM2.5/PM10 separators operating at flow rates ranging from 1 to 16.7 L/min. The equipment addresses several technical challenges associated with flow rate variations during calibration. The deviation between the actual and working flow rates is within ±1%, and the expanded uncertainty of the Da50 calibration results is better than 3% (k=2), meeting both domestic and international standards.
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