Vaisala WXT520 Manuals

Manuals and User Guides for Vaisala WXT520. We have 1 Vaisala WXT520 manual available for free PDF download: User Manual

Vaisala WXT520 User Manual (171 pages)

Weather Transmitter

Brand: Vaisala | Category: Transmitter | Size: 3.39 MB

Table of Contents
3
Chapter 1 General Information

13
- About this Manual
  
  13
  - Contents of this Manual
    13
  - General Safety Considerations
    14
  - Feedback
    15
- ESD Protection
  
  15
- Recycling
  
  15
- Trademarks
  
  16
- License Agreement
  
  16
- Regulatory Compliance
  
  16
- Warranty
  
  17
Chapter 2 Product Overview

19
- Weather Transmitter WXT520
  
  19
- WXT520 Transmitter Components
  
  21
Chapter 3 Functional Description

27
- Wind Measurement Principle
  
  27
- Precipitation Measurement Principle
  
  29
- PTU Measurement Principle
  
  31
- Heating (Optional)
  
  31
  - Figure 9 Heating Control
    32
Chapter 4 Installation

33
Chapter 5 Wiring and Power Management

45
- Power Supplies
  
  45
  - Figure 20 Average Operational Current Consumption
    46
  - Figure 21 Heating Current and Power Vs Vh
    47
- Wiring Using the 8-Pin M12 Connector
  
  48
Chapter 6

49
- Wiring Using the Screw Terminals
  
  50
  - Figure 24 Screw Terminal Block
    50
- Data Communication Interfaces
  
  52
  - Figure 25 Data Communication Interfaces
    52
- Power Management
  
  53
Chapter 6 Connection Options

57
Chapter 7 Getting the Data Messages

67
- General Commands
  
  68
- ASCII Protocol
  
  72
  - Abbreviations and Units
    72
  - Table 6 Abbreviations and Units
    72
  - Device Address (?)
    73
  - Acknowledge Active Command (A)
    73
  - Wind Data Message (Ar1)
    74
  - Pressure, Temperature and Humidity Data Message
    75
  - (Ar2)
    75
  - Precipitation Data Message (Ar3)
    76
  - Supervisor Data Message (Ar5)
    77
  - Combined Data Message (Ar)
    78
  - Composite Data Message Query (Ar0)
    78
  - Polling with CRC
    79
  - Automatic Mode
    81
  - Automatic Composite Data Message (Ar0)
    81
- SDI-12 Protocol
  
  82
- NMEA 0183 V3.0 Protocol
  
  95
  - Device Address (?)
    95
  - Acknowledge Active Command (A)
    96
  - MWV Wind Speed and Direction Query
    96
  - XDR Transducer Measurement Query
    98
  - Table 7 Transducer Ids of the Measurement Parameters
    100
  - TXT Text Transmission
    106
  - Table 8 Transducer Table
    106
  - Automatic Mode
    108
  - Automatic Composite Data Message (Ar0)
    108
Chapter 8 Sensor and Data Message Settings

109
- Wind Sensor
  
  109
  - Checking the Settings (Awu)
    109
  - Setting Fields
    111
  - Changing the Settings (Awu)
    113
- Pressure, Temperature, and Humidity Sensors
  
  115
  - Checking the Settings (Atu)
    115
  - Setting Fields
    116
  - Changing the Settings (Atu)
    117
- Precipitation Sensor
  
  119
  - Checking the Settings (Aru)
    119
  - Setting Fields
    120
  - Changing the Settings (Aru)
    123
- Supervisor Message
  
  125
  - Checking the Settings (Asu)
    125
  - Setting Fields
    126
  - Changing the Settings (Asu)
    127
- Composite Data Message (Ar0)
  
  129
Chapter 9 Maintenance

131
- Cleaning
  
  131
- Replacing the PTU Module
  
  132
  - Figure 26 Replacing the PTU Module
    132
- Factory Calibration and Repair Service
  
  133
- Vaisala Service Centers
  
  133
Chapter 10 Troubleshooting

135
- Table 9 Data Validation
  135
- Table 10 Communication Problems
  136
- Self-Diagnostics
  
  137
  - Error Messaging/Text Messages
    137
  - Table 11 Error Messaging/Text Messages Table
    138
  - Rain and Wind Sensor Heating Control
    139
  - Operating Voltage Control
    139
  - Technical Support
    139
Chapter 11 Technical Specifications

141
- Performance
  
  141
  - Table 12 Barometric Pressure
    141
  - Table 13 Air Temperature
    141
  - Figure 27 Accuracy over Temperature Range
    142
  - Table 14 Wind
    142
  - Table 15 Relative Humidity
    142
  - Table 16 Precipitation
    143
- Inputs and Outputs
  
  144
  - Table 17 Inputs and Outputs
    144
- Operating Conditions
  
  145
  - Table 18 Operating Conditions
    145
  - Table 19 Electromagnetic Compatibility
    145
- Materials
  
  146
- General
  
  146
  - Table 20 Materials
    146
  - Table 21 General
    146
- Options and Accessories
  
  147
  - Table 22 Options and Accessories
    147
- Dimensions (MM/Inch)
  
  148
Appendix Anetworking

151
- Connecting Several Wxt520S on the same Bus
  
  151
- SDI-12 Serial Interface
  
  151
  - Wiring
    151
  - Communication Protocol
    152
- RS-485 Serial Interface
  
  153
  - Wiring
    153
  - Communication Protocol
    153
  - ASCII, Polled
    153
  - NMEA 0183 V3.0, Query
    154
  - NMEA 0183 V3.0 Query with ASCII Query Commands
    156
Appendix B Sdi-12 Protocol

159
- SDI-12 Electrical Interface
  
  159
  - SDI-12 Communications Protocol
    160
  - SDI-12 Timing
    161
  - Figure 31 Timing Diagram
    161
Appendix C Crc-16 Computation

163
- Encoding the CRC as ASCII Characters
  
  164
- NMEA 0183 V3.0 Checksum Computation
  
  164
Appendix D

165
Wind Measurement Averaging Method

165
- Figure 32 Wind Measurement Averaging Method
  166
Appendix E Factory Configurations

167
- General Unit Settings
  
  168
- Wind Configuration Settings
  
  168
  - Table 23 General Unit Settings
    168
  - Table 24 Wind Configuration Settings
    168
- PTU Configuration Settings
  
  169
- Rain Configuration Settings
  
  169
- Supervisor Settings
  
  169

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Vaisala WXT520 Manuals

Vaisala WXT520 User Manual (171 pages)

Table of Contents

Chapter 1 General Information

About this Manual

ESD Protection

Recycling

Trademarks

License Agreement

Regulatory Compliance

Warranty

Chapter 2 Product Overview

Weather Transmitter WXT520

WXT520 Transmitter Components

Chapter 3 Functional Description

Wind Measurement Principle

Precipitation Measurement Principle

PTU Measurement Principle

Heating (Optional)

Chapter 4 Installation

Unpacking the Transmitter

Selecting the Location

Installation Procedure

Chapter 5 Wiring and Power Management

Power Supplies

Wiring Using the 8-Pin M12 Connector

Chapter 6

Wiring Using the Screw Terminals

Data Communication Interfaces

Power Management

Chapter 6 Connection Options

Communication Protocols

Connection Cables

Service Cable Connection

Communication Setting Commands

Chapter 7 Getting the Data Messages

General Commands

ASCII Protocol

SDI-12 Protocol

NMEA 0183 V3.0 Protocol

Chapter 8 Sensor and Data Message Settings

Wind Sensor

Pressure, Temperature, and Humidity Sensors

Precipitation Sensor

Supervisor Message

Composite Data Message (Ar0)

Chapter 9 Maintenance

Cleaning

Replacing the PTU Module

Factory Calibration and Repair Service

Vaisala Service Centers

Chapter 10 Troubleshooting

Self-Diagnostics

Chapter 11 Technical Specifications

Performance

Inputs and Outputs

Operating Conditions

Materials

General

Options and Accessories

Dimensions (MM/Inch)

Appendix Anetworking

Connecting Several Wxt520S on the same Bus

SDI-12 Serial Interface

RS-485 Serial Interface

Appendix B Sdi-12 Protocol

SDI-12 Electrical Interface

Appendix C Crc-16 Computation

Encoding the CRC as ASCII Characters

NMEA 0183 V3.0 Checksum Computation

Appendix D

Wind Measurement Averaging Method

Appendix E Factory Configurations

General Unit Settings

Wind Configuration Settings

PTU Configuration Settings

Rain Configuration Settings

Supervisor Settings

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