TY - JOUR
T1 - A differential mobility analyzer (DMA) system for submicron aerosol measurements at ambient relative humidity
AU - Wang, Jian
AU - Flagan, Richard C.
AU - Seinfeld, John H.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - A new differential mobility analyzer (DMA) system for measuring submicron aerosol size distribution at ambient relative humidity (RH), with special attention to implementation on aircraft, is described. The system includes an active RH controller, a cylindrical differential mobility analyzer (CDMA), and a condensation particle counter. A cascade controller consisting of 2 Proportional-Integral-Differential (PID) modules maintains the RH inside the CDMA at ambient RH. The flows are controlled with feedback PID controllers, which compensate for the variation of pressure as the aircraft changes altitude. This system was integrated into the CIRPAS Twin Otter aircraft and used to measure ambient size distributions during the ACE-Asia experiment, which was carried out from March to May 2001 in Japan.
AB - A new differential mobility analyzer (DMA) system for measuring submicron aerosol size distribution at ambient relative humidity (RH), with special attention to implementation on aircraft, is described. The system includes an active RH controller, a cylindrical differential mobility analyzer (CDMA), and a condensation particle counter. A cascade controller consisting of 2 Proportional-Integral-Differential (PID) modules maintains the RH inside the CDMA at ambient RH. The flows are controlled with feedback PID controllers, which compensate for the variation of pressure as the aircraft changes altitude. This system was integrated into the CIRPAS Twin Otter aircraft and used to measure ambient size distributions during the ACE-Asia experiment, which was carried out from March to May 2001 in Japan.
UR - https://www.scopus.com/pages/publications/0037215242
U2 - 10.1080/02786820300891
DO - 10.1080/02786820300891
M3 - Article
AN - SCOPUS:0037215242
SN - 0278-6826
VL - 37
SP - 46
EP - 52
JO - Aerosol Science and Technology
JF - Aerosol Science and Technology
IS - 1
ER -