Counting efficiency of condensation particle counters at low-pressures with illustrative data from the upper troposphere. Hermann, M. & Wiedensohler, a. Journal of Aerosol Science, 32:975-991, 2001.
Counting efficiency of condensation particle counters at low-pressures with illustrative data from the upper troposphere [pdf]Paper  abstract   bibtex   
The low-pressure counting efficiency of three modified condensation particle counters (CPCs, TSI Model 7610) was investigated. In this study, we describe the modifications of the counters, present a 'new' low-pressure calibration set-up, and show the resulting CPC counting efficiency curves as function of operating pressure (160-1000hPa) and temperature difference between the saturator and condenser block (10.5-26.0??C). Furthermore, particle coincidence in the CPC optics was studied. The presented CPCs are able to measure particle number concentrations of up to 40,000 particles/cm3 at pressures down to 160hPa. The lower threshold diameter of the CPCs can be varied between 4 and 23nm. Copyright ?? 2001 Elsevier Science Ltd.
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 title = {Counting efficiency of condensation particle counters at low-pressures with illustrative data from the upper troposphere},
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 year = {2001},
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 abstract = {The low-pressure counting efficiency of three modified condensation particle counters (CPCs, TSI Model 7610) was investigated. In this study, we describe the modifications of the counters, present a 'new' low-pressure calibration set-up, and show the resulting CPC counting efficiency curves as function of operating pressure (160-1000hPa) and temperature difference between the saturator and condenser block (10.5-26.0??C). Furthermore, particle coincidence in the CPC optics was studied. The presented CPCs are able to measure particle number concentrations of up to 40,000 particles/cm3 at pressures down to 160hPa. The lower threshold diameter of the CPCs can be varied between 4 and 23nm. Copyright ?? 2001 Elsevier Science Ltd.},
 bibtype = {article},
 author = {Hermann, M. and Wiedensohler, a.},
 journal = {Journal of Aerosol Science}
}
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