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TSI Instruments 3936 User Manual
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Aerosol Neutralizers
Model 3936
Sc
anning Mobility
Particle Sizer
™ (SMPS
™
) Spectrometer
Operation and Service Manual
P/N
1933796
, Revision
P
June 2010
2
Table of Contents
Manual History
6
Warranty
7
SMPS™ Spectrometer
8
Safety
9
Electrical Safety
9
Laser Safety
9
Chemical Safety
10
Labels
11
Radiation Safety
11
Table of Contents
13
Unpacking the SMPS
13
APPENDIX C Calculation of the Geometric Mean and Geometric
17
APPENDIX D Communication between Aerosol Instrument
17
Model 3080
17
Submitting Comments
18
About this Manual
17
Purpose
17
Related Product Literature
17
CHAPTER 1 SMPS™ Spectrometer Overview
19
Product Description
19
SMPS Spectrometer Shown with a Model 3085 Nano DMA and Model 3786 UWCPC
19
How the System Operates
20
CHAPTER 2 Unpacking the SMPS™ Spectrometer
21
Packing Lists
21
Condensation Particle Counter
21
Main Components of the SMPS Spectrometer
21
Unpacking Instructions
22
Model 1035900 Inlet Impactor Packing List
22
CHAPTER 3 Setting up SMPS Hardware
23
Cabling Connections
23
Connections to the Electrostatic Classifier
23
Cabling the CPC to the Computer
24
Applying Power Sequence
25
Setting up SMPS
25
Connecting the Model 3772 or 3010 CPC
26
Plumbing Connections
26
Recommended Mode of Operation
26
Typical Mode of Operation
26
Underpressure and Overpressure Modes
26
Model 3772 CPC with Nano DMA
27
Model 3010 CPC with Nano DMA
28
Model 3010 CPC with Long DMA
29
Model 3772 CPC with Long DMA
29
Connecting the Model 3775 or 3022A CPC
30
Model 3775 CPC with Nano DMA
30
Model 3022A CPC with Nano DMA
31
Connecting the Model 3776 or 3025A UCPC
32
Model 3022A CPC with Long DMA
32
Model 3775 CPC with Long DMA
32
Model 3776 UCPC with Nano DMA
33
Model 3025A UCPC with Nano DMA
34
Model 3025A UCPC with Long DMA
35
Model 3776 CPC with Long DMA
35
Connecting the Model 3782, 3785, or 3786 WCPC
36
Model 3782, 3785, or 3786 WCPC with Nano DMA
36
Model 3782, 3785, or 3786 WCPC with Long DMA
37
CHAPTER 4 Operating SMPS™ Hardware
39
Before You Begin
39
Classifier LCD Display
39
Selecting Flow Rates
40
Schematic Flow Diagram of the Classifier with Long DMA
40
Schematic Flow Diagram of the Classifier with Nano DMA
41
Operating SMPS
41
Recommended Operating Parameters
42
Impactor as a Flowmeter
43
Impactor ∆P and 50% Cut Size Vs. Flow Rate
43
Overpressure Mode
44
Setting Flow Rates
44
SMPS Spectrometer Check
44
Underpressure Mode
44
CHAPTER 5 Maintenance Recommendations
47
Maintenance Schedule
47
Problems and Solutions
48
SMPS Spectrometer Problems and Solutions
48
Testing for Leaks
49
Maintaining and
49
CHAPTER 6 Service
52
Returning the SMPS™ Spectrometer for Service
52
SMPS Specifications
53
APPENDIX A Specifications
56
APPENDIX B Theory of Operation
56
Impaction Theory and Operation
56
Classifier Shown with Impactor Installed on Inlet
57
Cross-Sectional View of an Inertial Impactor [Hinds, 1982
57
Electrostatic Classifier
58
Flow Schematic for the Electrostatic Classifier with Long LDMA
59
Dma
60
Charging Theory
61
Bipolar Particle Charge Distribution in Air [Wiedensohler and Fissan, 1988
61
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
62
Coefficients for Equation
63
Particle Mobility Theory
64
Center Rod Voltage as a Function of Particle Diameter for Normal Operating Conditions of the Long DMA
66
CPC Theory
67
Graph of the CPC Counting Efficiency Curves
68
Particle Counting
69
Operating at Higher Concentrations
70
Coincidence Levels
70
The Data Measurement Process
71
Transfer Function of the Electrostatic Classifier [Knutson and Whitby, 1975
72
March
73
April
74
April
75
Reader's Comments
87
4
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TSI Instruments 3936 Specifications
General
Brand
TSI Instruments
Model
3936
Category
Measuring Instruments
Language
English
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