Vaisala WINDCAP WS425 Manuals

Vaisala WINDCAP WS425 Manuals

Manuals and User Guides for Vaisala WINDCAP WS425. We have 1 Vaisala WINDCAP WS425 manual available for free PDF download: User Manual

Vaisala WINDCAP WS425 User Manual

Vaisala WINDCAP WS425 User Manual (86 pages)

Ultrasonic Wind Sensor

Brand: Vaisala | Category: Accessories | Size: 1.07 MB

Table of Contents

Table of Contents
3
Vaisala
3
Chapter 1 General Information

7
- About this Manual
  
  7
- Safety
  
  10
  - General Safety Considerations
    10
  - Product Related Safety Precautions
    10
    
    Absolute Maximum Voltages
    10
    
    Inverted Mounting
    10
  - ESD Protection
    11
  - Table 4 Maximum Voltages
    11
- Regulatory Compliances
  
  12
- Trademarks
  
  14
- License Agreement
  
  14
- Warranty
  
  14
Chapter 2 Product Overview

15
- Introduction to WS425
  
  15
  - Measuring Principle
    15
  - Sensor Operating Modes
    16
- Sensor Features
  
  17
  - Table 5 Sensor Features
    17
    
    Figure 1 Different Wind Speed and Direction Presentations
    18
    
    Polar Wind Speed and Direction
    18
    
    Scalar Averaging of Wind Speed and Direction
    18
    
    Wind Speed X and y Components
    18
    
    Vector Averaging of Wind Speed and Direction
    19
    
    Wind Direction Coasting
    19
    
    Gust Wind Speed and Direction over Time
    20
    
    Table 6 Wind Direction Coasting
    20
    
    Table 7 Gust Wind Speed and Direction over Averaging Time
    20
Chapter 3 Installation

21
- Table 8
  
  31
- Figure 8 Open-Lead Cables for WS425 Sensors
  32
- Powering
  33
  - Power Supplies
    33
- Selecting Location
  
  21
- Installation Procedure
  
  21
Chapter 4 Operation

35
- Analog Mode
  35
  - Wind Speed
    35
  - Figure 9 Frequency Connection
    36
  - Figure 10 Wind Speed
    36
  - Wind Direction
    37
  - Missing Readings
    37
  - Figure 11 Analog Connection
    37
  - Serial Mode
    38
    
    Overview
    38
    
    Serial Mode Default Settings for the USA
    38
    
    Configuration Menu
    39
    
    Serial Mode Default Settings for Europe
    39
    
    Configuration Commands
    40
    
    Handar RS-232
    41
    
    Identify Command I
    41
    
    Measurement Command Wx
    41
    
    Table 9 the Handar RS-232 Polling Commands
    41
    
    Missing Readings
    42
    
    Table 10 the RS-232 19-Character Fixed Length Output Message
    42
    
    Measurement Unit Change Command Ux
    43
    
    NMEA Standard
    43
    
    Missing Readings
    44
    
    NMEA Extended Message
    44
    
    Table 11 Checksum Table
    45
    
    Missing Readings
    46
    
    WAT11 Message
    46
    
    Average Interval
    47
    
    Average Wind
    47
    
    Averaging Method
    47
    
    Divided by
    47
    
    Scalar Averaging
    47
    
    Wind Speed Units
    47
    
    Output Interval
    48
    
    Sensor ID Character
    48
    
    Vector Averaging
    48
    
    Bit Rate
    49
    
    Head Orientation
    49
    
    Table 12 Consecutive Measurements of Wind Direction
    49
    
    Wind Direction Coast Threshold
    49
  - SDI-12 Protocol
    51
    
    SDI-12 Electrical Interface
    51
    
    SDI-12 Support Group
    51
    
    Serial Data Line
    52
    
    Voltage Transitions
    52
  - Impedance
    52
  - Table 13 Logic and Voltage Level for Serial Data
    52
  - SDI-12 Communications Protocol
    53
  - Baud Rate and Byte Frame Format
    53
  - Table 14 Byte Frame Format for SDI-12
    53
  - Two Different Submodes
    54
  - Table 15 SDI Timing Chart
    54
  - Standard SDI-12 Commands Supported by WS425
    55
    
    Acknowledge Active Command (A!)
    55
    
    Address Query Command (?!)
    56
    
    Send Identification Command (Ai!)
    56
    
    Change Address Command (Aab!)
    57
    
    Send Data Command (Ad0!)
    58
    
    Start Measurement Command (Am!)
    58
    
    Continuous Measurements (Ar0!)
    60
    
    Start Verification (Av!)
    61
  - Vaisala-Specific SDI-12 Commands Supported by WS425
    62
    
    Measurement Unit Change (Axux!)
    62
    
    Check Current Submode (Ax?!)
    63
    
    Heater Control Command (Axhx!)
    63
    
    Place Sensor in Submode B (Axqx;C.C;N;Yyyy!)
    64
    
    Check Current Measurement Unit (Ax*!)
    65
    
    Reset the Sensor to Submode a Command (Axs!)
    65
  - Sdi-12 Timing
    66
  - Figure 12 Timing Diagram
    67
Wind Direction Used for Averaging

49
- Coasting) 340 (Coasting)
  49
- Parity
  50
- Data Bits
  50
- Save Configuration
  50
- Zero Speed Calibration
  50
- Resume Operation
  51
Chapter 5 Maintenance

69
- Visual Inspection of WS425 Ultrasonic Wind Sensor
  
  69
  - Figure 13 Solder Spot and Sensor Handling
    70
- Periodic Testing
  
  71
  - Figure 14 Verifier
    72
Chapter 6 Troubleshooting

73
- Common Problems
  
  73
  - Frequently Asked Questions (FAQ)
    73
  - Instructions for Opening a Serial Terminal Connection to WS425
    75
- Technical Support
  
  76
- Return Instructions
  
  76
- Vaisala Service Centers
  
  77
Chapter 7 Technical Data

79
- Specifications
  
  79
  - Table 16 Technical Specifications
    79
Appendix Adrawings

81

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