TSI Instruments 3936 - Page 14

xiv Model 3936 Scanning Mobility Particle Sizer
TM
(SMPS
TM
) Spectrometer
CHAPTER 5 Maintaining and Troubleshooting the SMPS™
Spectrometer .............................................................................. 5-1
Maintenance Recommendations ........................................................ 5-1
Troubleshooting .................................................................................. 5-2
Problems and Solutions ................................................................... 5-2
Testing for Leaks ............................................................................. 5-3
CHAPTER 6 Service ................................................................................ 6-1
Technical Contacts ............................................................................. 6-1
Returning the SMPS™ Spectrometer for Service .............................. 6-2
APPENDIX A Specifications .................................................................. A-1
APPENDIX B Theory of Operation ........................................................ B-1
Introduction ........................................................................................ B-1
History ................................................................................................ B-1
Impaction Theory and Operation ....................................................... B-2
Electrostatic Classifier ....................................................................... B-4
Charging Theory ................................................................................ B-7
Particle Mobility Theory ................................................................... B-10
Condensation Particle Counter ........................................................ B-13
CPC Theory .................................................................................. B-13
Particle Counting .......................................................................... B-15
Operating at Higher Concentrations ............................................. B-16
The Data Measurement Process ..................................................... B-17
References ...................................................................................... B-19
APPENDIX C Calculation of the Geometric Mean and Geometric
Standard Deviation for Number, Surface, and Volume
Distributions .............................................................................. C-1
APPENDIX D Communication between Aerosol Instrument
Manager® Software and the Electrostatic Classifier
Model 3080 ................................................................................. D-1
Index
Reader’s Comments
Figures
1-1 SMPS Spectrometer Shown with a Model 3085 Nano DMA
and Model 3786 UWCPC ............................................................. 1-1
3-1 Model 3772 CPC with Nano DMA .................................................... 3-5
3-2 Model 3010 CPC with Nano DMA .................................................... 3-6
3-3 Model 3772 CPC with Long DMA ..................................................... 3-7
3-4 Model 3010 CPC with Long DMA ..................................................... 3-7
3-5 Model 3775 CPC with Nano DMA .................................................... 3-8
3-6 Model 3022A CPC with Nano DMA .................................................. 3-9
3-7 Model 3775 CPC with Long DMA ................................................... 3-10