Contents xv
3-8 Model 3022A CPC with Long DMA ................................................. 3-10
3-9 Model 3776 UCPC with Nano DMA ................................................ 3-11
3-10 Model 3025A UCPC with Nano DMA .............................................. 3-12
3-11 Model 3776 CPC with Long DMA ................................................... 3-13
3-12 Model 3025A UCPC with Long DMA .............................................. 3-13
3-13 Model 3782, 3785, or 3786 WCPC with Nano DMA ....................... 3-14
3-14 Model 3782, 3785, or 3786 WCPC with Long DMA ....................... 3-15
4-1 Classifier LCD Display ...................................................................... 4-1
4-2 Schematic Flow Diagram of the Classifier with Long DMA ............... 4-2
4-3 Schematic Flow Diagram of the Classifier with Nano DMA .............. 4-3
B-1 Classifier Shown with Impactor Installed on Inlet ............................ B-3
B-2 Cross-Sectional View of an Inertial Impactor [Hinds,
1982] ............................................................................................ B-3
B-3 Flow Schematic for the Electrostatic Classifier with
Long LDMA .................................................................................. B-5
B-4 Flow Schematic for the Electrostatic Classifier with Nano
DMA ............................................................................................. B-6
B-5 Bipolar Particle Charge Distribution in Air [Wiedensohler
and Fissan, 1988] ........................................................................ B-7
B-6 Center Rod Voltage as a Function of Particle Diameter
for Normal Operating Conditions of the Long DMA .................. B-12
B-7 Graph of the CPC Counting Efficiency Curves .............................. B-14
B-8 Transfer Function of the Electrostatic Classifier
[Knutson and Whitby, 1975] ...................................................... B-18
Tables
2-1 Main Components of the SMPS Spectrometer ................................. 2-1
2-2 Model 390087 Interface Pack Packing List ....................................... 2-2
2-3 Model 1035900 Inlet Impactor Packing List ...................................... 2-2
4-1 Recommended Operating Parameters ............................................. 4-4
4-2 Impactor ∆P and 50% Cut Size vs. Flow Rate .................................. 4-5
5-1 Maintenance Schedule ...................................................................... 5-1
5-2 SMPS Spectrometer Problems and Solutions .................................. 5-2
A-1 SMPS Specifications ....................................................................... A-1
B-1 Midpoint Mobilities, Midpoint Particle Diameters, and Fraction of
Total Particle Concentration that Carries +1, +2, +3, +4, +5,
and +6 Elementary Charges as a Function of Mobility ............... B-8
B-2 Coefficients for Equation B-2 ........................................................... B-9
B-3 Coincidence Levels ........................................................................ B-16
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