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iv
DRU10002 (REV 004 / JAN 2017)
4.7.4
External Motor Stop Control
59
4.8
Circuit Protection
60
5
Electrodes
61
5.1
Electrode Handling Precautions
61
5.2
Shafts
65
5.3
RDE Tips
68
5.4
Single-Piece RDE Designs
74
5.5
RRDE Tips
76
5.6
15 mm OD RCE Tips
80
5.7
12 mm OD RCE Tips
81
6
Maintenance
82
6.1
Routine Cleaning
82
6.2
Brush Replacement
82
6.2.1
Internal Brush Replacement
82
6.2.2
Complete Brush Assembly Replacement
85
6.3
Lower Bearing Replacement
86
6.4
Removing the Motor-Coupling Assembly
87
6.5
Installing a New Motor-Coupling Assembly
91
Motor Control Cable Wiring
94
6.6
Rotation Rate Calibration
96
6.7
Changing the Input Rotation Rate Ratio
106
6.8
Changing the Motor Stop Signal Logic
108
7
Parts and Accessories
112
7.1
Mechanical Parts and Hardware
112
7.2
Power Cords
115
7.3
Power Supplies
118
8
Troubleshooting
121
9
Storage and Shipment
125
10
Theory
126
10.1
Forced Convection
126
10.2
Half Reactions
127
10.3
Voltammetry
128
10.3.1
Voltammogram Plotting Conventions
131
10.3.2
Measuring Limiting Currents
133
10.4
Rotating Disk Electrode (RDE) Theory
135
10.4.1
Levich Study
136
10.4.2
Koutecky-Levich Analysis
138
10.5
Rotating Ring-Disk Electrode (RRDE) Theory
140
10.5.1
Theoretical Computation of the Collection Efficiency
140
10.5.2
Empirical Measurement of the Collection Efficiency
142
10.5.3
Generator/Collector Experiments
143
10.5.4
Comparing Two Competing Pathways
144
10.6
Rotating Cylinder Electrode (RCE) Theory
145
10.7
References
146
11
Glossary
150
Содержание MSR 636A
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