AEROSOL SPECTROMETER AND ITS APPLICATION 167 
BOX 
ETN 
LIALLL oa 2k 
27a 
N 
N 
N 
N 
N 
N 
N 
N 
N 
N 
. 
(ZL ZATZV ZA L 
CLALLL 
Mi 
t 
bn = H VRBVES VR ]R 
Sama e 
TZ EZZHAA 
ie 77 a 
q 
EAI 
NS 
> | 
Fre. 2—Vertical cross section of the aerosol spectrometer: R rotor cone; C rotor cup; N ring nut, 
locking C to R; P housing shell; B base; M motor driving tachometer T and shaft 5S; K, U, L L fric- 
tionless bearing assembly; I inlet; O exchangeable orifices; V exit channel; W outlet 
specific test requirements. The largest sampling — resulting from latex aerosols of defined diame- 
rate is obtained for NV = 18,000; O = 1.5 which ter obtained for two values of O; they indicate 
corresponds to a Reynolds’ number of 710. the sharp termination of the deposit at the respec- 
Figure 4a shows photographs of foil deposits tive La. 
