Campbell Scientific CSAT3B CSAT3B Three-Dimensional Sonic Anemometer - Page 8

Operation, Maintenance and Troubleshooting, Reference and Attributions, CSAT3B Orientation, CSAT3B

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Table of Contents 7.3 Mounting 25 7.4 Leveling 27 7.5 Additional Fast-response Sensors 28 7.5.1 Fine-Wire Thermocouple 28 7.5.2 Other Gas Analyzers 30 7.6 Wiring 30 7.7 Communications 31 7.7.1 SDM Communications 32 7.7.2 CPI Communications 36 7.7.3 RS-485 Communications 40 7.7.4 USB 42 8. Operation 43 8.1 Theory of Operation 43 8.1.1 Algorithm Version 5 44 8.1.2 Effects of Crosswind on the Speed of Sound 44 8.2 Operating Modes 45 8.2.1 Measurement Trigger 46 8.2.2 Data Filter 46 8.2.3 Data Output 47 8.2.4 Operating Mode Recommendations 50 8.3 Synchronization with other sensors 50 8.4 Datalogger Programming using SDM or CPI 51 8.4.1 CRBasic Instructions 52 8.4.1.1 CSAT3B 52 8.4.1.2 CSAT3BMonitor 52 8.4.2 Diagnostic Word 53 8.4.3 SDMTrigger 54 9. Maintenance and Troubleshooting 55 9.1 General Maintenance 55 9.2 Sonic Wicks 55 9.3 Desiccant 56 9.4 Calibration 57 9.4.1 Test for Wind Offset 58 9.5 Troubleshooting 60 9.5.1 Sending an OS to the CSAT3B 60 9.6 Returning the CSAT3B 61 10. Reference and Attributions 61 10.1 References 61 Appendices A. CSAT3B Orientation A-1 A.1 Determining True North and Sensor Orientation A-1 A.2 Online Magnetic Declination Calculator A-3 B. CSAT3B Measurement Theory B-1 B.1 Theory of Operation B-1 B.1.1 Wind Speed B-1 ii

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Table of Contents
7.3
Mounting
...........................................................................................
25
7.4
Leveling
.............................................................................................
27
7.5
Additional Fast-response Sensors
......................................................
28
7.5.1
Fine-Wire Thermocouple
...........................................................
28
7.5.2
Other Gas Analyzers
..................................................................
30
7.6
Wiring
...............................................................................................
30
7.7
Communications
................................................................................
31
7.7.1
SDM Communications
...............................................................
32
7.7.2
CPI Communications
.................................................................
36
7.7.3
RS-485 Communications
...........................................................
40
7.7.4
USB
............................................................................................
42
8.
Operation
...................................................................
43
8.1
Theory of Operation
..........................................................................
43
8.1.1
Algorithm Version 5
..................................................................
44
8.1.2
Effects of Crosswind on the Speed of Sound
.............................
44
8.2
Operating Modes
...............................................................................
45
8.2.1
Measurement Trigger
.................................................................
46
8.2.2
Data Filter
..................................................................................
46
8.2.3
Data Output
................................................................................
47
8.2.4
Operating Mode Recommendations
...........................................
50
8.3
Synchronization with other sensors
...................................................
50
8.4
Datalogger Programming using SDM or CPI
....................................
51
8.4.1
CRBasic Instructions
..................................................................
52
8.4.1.1
CSAT3B()
........................................................................
52
8.4.1.2
CSAT3BMonitor()
...........................................................
52
8.4.2
Diagnostic Word
........................................................................
53
8.4.3
SDMTrigger()
............................................................................
54
9.
Maintenance and Troubleshooting
..........................
55
9.1
General Maintenance
.........................................................................
55
9.2
Sonic Wicks
......................................................................................
55
9.3
Desiccant
...........................................................................................
56
9.4
Calibration
.........................................................................................
57
9.4.1
Test for Wind Offset
..................................................................
58
9.5
Troubleshooting
................................................................................
60
9.5.1
Sending an OS to the CSAT3B
..................................................
60
9.6
Returning the CSAT3B
.....................................................................
61
10.
Reference and Attributions
......................................
61
10.1
References
.........................................................................................
61
Appendices
A.
CSAT3B Orientation
................................................
A-1
A.1
Determining True North and Sensor Orientation
............................
A-1
A.2
Online Magnetic Declination Calculator
.........................................
A-3
B.
CSAT3B Measurement Theory
...............................
B-1
B.1
Theory of Operation
........................................................................
B-1
B.1.1
Wind Speed
..............................................................................
B-1
ii