Performance of TSI 3760 condensation nuclei counter at reduced pressures and flow rates

Journal Article · Tue Jan 01 00:00:00 EST 1991 · Aerosol Science and Technology; (United States)

DOI:https://doi.org/10.1080/02786829108959530· OSTI ID:5607456

Zhang, Zhiqun; Liu, B Y.H. ^[1]

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1. Univ. of Minnesota, Minneapolis (United States)

This article describes an experimental study of the performance of the TSI model 3760 clean room condensation nuclei counter (CNC) at various pressures and flow rates. Studies were made to determine the counting efficiency of the instrument in the pressure range of 0.1-1 atom and flow rate range of 0.15-1.4 L/min. The counting efficiency curves were found to be shifted to larger particle sizes as the pressure or flow rate was reduced. The low pressure and low flow rate limits of the instrument were also determined. The numerical model developed in a previous study was used to predict the performance of the CNC. The numerical results were compared with the experimental data and found to agree well in the pressure range of 0.2-1.0 atm and flow rate range of 0.3-1.4 L/min. Discrepancies were found to be more significant at the lower pressures and flow rates.

• OSTI ID: 5607456
• Journal Information: Aerosol Science and Technology; (United States), Vol. 15:4; ISSN 0278-6826
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORS
PERFORMANCE TESTING
CONDENSATION NUCLEI
AIR POLLUTION MONITORING
EFFICIENCY
FLOW RATE
MATHEMATICAL MODELS
PARTICLE SIZE
MEASURING INSTRUMENTS
MONITORING
MONITORS
SIZE
TESTING
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)