Vaisala WINDCAP WS425 User's Guide download pdf (Page 28)

USER'S GUIDE____________________________________________________________________

26 __________________________________________________________________ M211095EN-C

1005-007

Figure 6 Ultrasonic Measurement Principle

The following numbers refer to Figure 6 above:

1 =

Ultrasonic measurement with zero wind.

2 = Impact of tail wind on ultrasonic measurement.

3 = Impact of head wind on ultrasonic measurement.

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 135 136

USER'S GUIDE 1
Table of Contents 3
CHAPTER 5 4
CHAPTER 6 4
CHAPTER 10 6
APPENDIX A 6
APPENDIX B 6
APPENDIX C 6
APPENDIX D 6
List of Figures 7
List of Tables 9
Version Information 12
Related Manuals 12
Documentation Conventions 13
Recycling 15
Regulatory Compliances 15
Trademarks 16
Warranty 16
PRODUCT OVERVIEW 17
1003-005 18
1104-064 20
Accessories 22
Bird Cage 23
WM Verifier 24
Table 7 WMT700 Cables 25
FUNCTIONAL DESCRIPTION 27
1005-007 28
Calculations 30
Overview 31
Scalar Averaging 32
Vector Averaging 33
Measurement Methods 34
INSTALLATION 37
WARNING 38
Installation Procedure 40
Unpacking Instructions 41
Mounting 42
1006-077 44
1006-079 47
1103-054 49
Alignment 50
0208-025 51
1001-018 51
1104-086 53
Cable 2m and Cable 10m 55
1009-016 56
1103-061 58
Powering 60
1104-054 61
1104-055 61
SERIAL COMMUNICATION AND 63
ANALOG OUTPUT 63
Protocols 65
Serial Interface Timing 66
Analog Output 67
Analog Output Types 68
Analog Output Scaling 68
Voltage 8 mV / mph 69
Voltage 4 mV / ° 69
S aout1minv,0.1 70
S aout1maxv,5 70
CONFIGURATION COMMANDS 73
Mode Switching Commands 76
Parameters Handling Commands 76
G — Get Parameter 78
Display Port Settings 79
START — Start Continuous 80
Measurement 80
STOP — Stop Wind Measurement 80
Information Commands 82
Configuration Parameters 83
Configuring Data Messages 85
Items for Data Messages 86
Status Flags 88
S wndOrientation,0 90
OPERATION 93
Program 94
Data Messages 94
WMT700 Data Message 21 96
WMT700 Data Message 22 97
WMT700 Data Message 23 98
WMT700 Data Message 24 99
WMT700 Data Message 25 100
Missing Readings 101
Measurement Mode Commands 102
WMT700 Profile Commands 103
MEAS — Start Measurement 104
POLL — Poll Data 105
SLEEP — Enter Low-Power Mode 105
@a M 12<CR><LF> 106
MAINTENANCE 107
Visual Inspection 108
Cleaning 108
Testing Proper Operation 108
1005-003 109
TROUBLESHOOTING 111
Error and Event Messages 113
Technical Support 116
Product Returns 116
TECHNICAL DATA 117
Table 31 General 119
Table 32 Accessories 120
Dimensions 121
1103-055 122
TYPICAL SYSTEM ENVIRONMENTS 125
1003-052 126
1004-001 128
CONFIGURATION PARAMETERS 131

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Vaisala WINDCAP WS425 User's Guide Page 28

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