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WXT536
Vaisala WXT536 User Manual
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User’s Guide
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M21184
0EN-C
The figure below shows the analog inpu
t settings in the Configuration
Tool.
1509-070
Figure 38
Analog Input Settings in Configuration Tool
151
153
Table of Contents
Default Chapter
3
Table of Contents
3
Chapter 1 General Information
13
About this Manual
13
General Safety Considerations
13
ESD Protection
14
Recycling
15
Trademarks
15
License Agreement
15
Regulatory Compliance
15
Warranty
16
Chapter 2 Product Overview
17
WXT530 Series Weather Transmitters
17
Figure 1 Vaisala Weather Transmitter WXT530 Series
17
Table 54 Table
19
Wxt536
20
Figure 3 WXT535 and WXT534
21
WXT535 and WXT534
21
Figure 4 WXT533 and WXT532
22
Figure 5 WXT531
22
Wxt531
22
WXT533 and WXT532
22
Components
23
Figure 6 WXT536 Components
23
Figure 7 Cut-Away View of WXT536
24
Figure 8 Bottom of WXT536
25
Optional Features
26
USB Cables
26
Figure 9 USB Cable
26
Mounting Kit
27
Figure 10 Mounting Kit
27
Surge Protector
28
Figure 11 Surge Protector
28
Bird Spike Kit
29
Figure 12 Bird Spike Kit
29
Figure 13 WXT536 with Bird Spike Kit
29
Vaisala Configuration Tool
30
Sensor Heating
30
Chapter 3 Functional Description
31
Wind Measurement Principle
31
Precipitation Measurement Principle
34
PTU Measurement Principle
36
Heating
36
Analog Input Interface
38
Analog Output Interface
38
Figure 2 WXT536
38
Chapter 4 Installation
39
Maritime Installations
39
Selecting the Location
40
Figure 14 Recommended Mast Location in Open Area
40
Figure 15 Recommended Mast Length on Top of Building
41
Unpacking
42
Figure 16 Contents of Shipping Container
42
Figure 17 Installing with Protective Packaging
43
Installing the Transmitter
44
Mounting
44
Mounting on Vertical Pole Mast
45
Figure 18 Removing Screw Cover
45
Figure 19 North Arrow
45
Mounting on Vertical Pole Mast with Mounting Kit
46
Figure 20 Mounting WXT531 on Vertical Pole Mast
46
Figure 21 Mounting Transmitter with Mounting Kit
47
Figure 22 Removing Protective Cushion after Installation
48
Mounting on Horizontal Cross Arm
49
Figure 23 Mounting Transmitter to Cross Arm (L-Profile)
49
Grounding
50
Grounding with Bushing and Grounding Kit
50
Figure 24 Mounting Bolt Location in Cross Arm
50
Aligning
51
Figure 25 Grounding with Bushing and Grounding Kit
51
Compass Alignment
52
Figure 26 Sketch of Magnetic Declination
52
Figure 27 Wind Direction Offset
53
Wind Direction Offset
53
Chapter 5 Wiring and Power Management
55
Power Supplies
56
Figure 28 Average Operational Current Consumption
56
Figure 29 Heating Instant Current and Power Vs Vh (WXT536, WXT535, WXT533, and WXT532)
58
Figure 30 Heating Instant Current and Power Vs Vh (WXT531)
58
Wiring with 8-Pin M12 Connector
60
External Wiring
60
Figure 31 Pins of 8-Pin M12 Connector
60
Table 5 Screw Terminal Pin-Outs
61
Table 6 WXT532 Ma Output Option Screw Terminal Pin-Outs
62
Internal Wiring
63
Figure 32 Internal Wiring for RS-232, SDI-12, and RS-485
66
Wiring Using Screw Terminals
67
Figure 33 Screw Terminal Block
67
Table 12 Screw Terminal Pin-Outs for Serial Interfaces and Power
68
Data Communication Interfaces
69
Figure 34 Data Communication Interfaces
69
Figure 35 Termination Jumper Positions
70
Power Management
71
Table 14 Economic Power Management
73
Chapter 6 Connection Options
75
Communication Protocols
75
Connection Cables
76
Installing the USB Cable Driver
77
Service Cable Connection
78
Figure 36 Service Cable Connection
78
Terminal
79
Communication Setting Commands
80
Checking Current Communication Settings (Axu)
80
Setting Fields
81
Changing the Communication Settings (Axu)
83
Chapter 7 Retrieving Data Messages
85
General Commands
86
Reset (Axz)
86
Precipitation Counter Reset (Axzru)
87
Precipitation Intensity Reset (Axzri)
88
Measurement Reset (Axzm)
89
ASCII Protocol
90
Abbreviations and Units
90
Device Address (?)
91
Acknowledge Active Command (A)
92
Wind Data Message (Ar1)
92
Pressure, Temperature and Humidity Data Message
93
(Ar2)
93
Precipitation Data Message (Ar3)
94
Supervisor Data Message (Ar5)
95
Combined Data Message (Ar)
97
Composite Data Message Query (Ar0)
97
Polling with CRC
98
Automatic Mode
100
Automatic Composite Data Message (Ar0)
101
SDI-12 Protocol
102
Address Query Command (?)
102
Acknowledge Active Command (A)
103
Change Address Command (Aab)
104
Send Identification Command (Ai)
104
Start Measurement Command (Am)
105
Start Measurement Command with CRC (Amc)
107
Start Concurrent Measurement (Ac)
107
Start Concurrent Measurement with CRC (Acc)
109
Send Data Command (Ad)
109
Examples of Am, Ac and Ad Commands
110
Continuous Measurement (Ar)
112
Continuous Measurement with CRC (Arc)
114
NMEA 0183 V3.0 Protocol
115
Device Address (?)
115
Acknowledge Active Command (A)
116
MWV Wind Speed and Direction Query
116
XDR Transducer Measurement Query
118
Table 19 Transducer Ids of Measurement Parameters
121
Table 20 Transducer Table
126
TXT Text Transmission
127
Automatic Mode
128
Automatic Composite Data Message (Ar0)
128
Chapter 8 Sensor and Data Message Settings
129
Wind Sensor
129
Checking the Settings (Awu)
129
Setting Fields
131
Changing the Settings (Awu)
133
Pressure, Temperature, and Humidity Sensors
136
Checking the Settings (Atu)
136
Setting Fields
137
Changing the Settings (Atu)
138
Precipitation Sensor
140
Checking the Settings (Aru)
140
Setting Fields
141
Changing the Settings (Aru)
144
Supervisor Message
146
Checking the Settings (Asu)
146
Setting Fields
147
Changing the Settings (Asu)
148
Composite Data Message (Ar0)
149
Analog Input
151
Figure 37 Analog Input Connector Pins
151
Table 21 Analog Input Signals
151
Figure 38 Analog Input Settings in Configuration Tool
152
Common Sensor Settings (Aiu)
154
Update Interval [I]
154
Table 25 Awu Setting Fields [R]
154
Enabling and Disabling Analog Input
154
Aux Input Averaging Time [A]
155
Parameter Selection [R]
155
Aux.rain Sensor Settings [Aia]
156
Gain [G]
156
Reset Mode [M]
157
Limit [L]
157
Parameter Selection [Aiu,R = Bit 2 and Bit 10]
157
Getting Data Messages
156
Solar Radiation Sensor Settings [Aib]
157
Gain [G]
157
Parameter Selection [Aiu,R= Bit 3 and Bit 11]
158
Aux Level Sensor Settings [Ais]
158
Gain [G]
158
Aux.temperature Sensor Settings [Aip]
158
Averaging Time [A]
158
Parameter Selection [Aiu,R= (Bit 1 and Bit 9)]
159
Parameter Order for SDI-12 Mode
159
Analog Output
159
Analog Output Operation
159
Analog Output Scaling
160
Analog Output Signal for Wind Speed Channel
161
Analog Output Signal for Wind Direction Chanel
162
Enabling or Disabling Analog Output
162
Chapter 9 Maintenance
165
Cleaning
165
Replacing the PTU Module
166
Figure 39 Replacing PTU Module
166
Technical Support
167
Chapter 10 Troubleshooting
169
Table 27 Communication Problems
170
Self-Diagnostics
172
Error Messaging/Text Messages
172
Rain and Wind Sensor Heating Control
173
Table 28 Error Messaging/Text Messages
173
Operating Voltage Control
174
Missing Readings and Error Indication
174
Chapter 11 Technical Specifications
175
Performance
175
Table 33 Wind
177
Inputs and Outputs
178
General Conditions
179
Table 38 Electromagnetic Compatibility
180
General
181
Table 39 Materials
181
Table 40 General
181
Materials
181
Options and Accessories
182
Table 41 Options and Accessories
182
Type Label
183
Figure 40 Type Label
183
Dimensions (MM/Inch)
184
Figure 41 WXT536 Dimensions
184
Figure 42 WXT535 and WXT534 Dimensions
185
Figure 43 WXT533 and WXT532 Dimensions
186
Figure 44 WXT531 Dimensions
187
Figure 45 Mounting Kit Dimensions
188
Appendix Anetworking
189
Connecting Several Transmitters on same Bus
189
SDI-12 Serial Interface
189
Wiring
189
Communication Protocol
190
RS-485 Serial Interface
191
Wiring
191
Communication Protocol
191
ASCII, Polled
191
NMEA 0183 V3.0, Query
192
NMEA 0183 V3.0 Query with ASCII Query Commands
194
Appendix B Sdi-12 Protocol
197
SDI-12 Electrical Interface
197
SDI-12 Communications Protocol
198
SDI-12 Timing
198
Figure 46 Timing Diagram
199
Appendix C Crc-16 Computation
201
Encoding the CRC as ASCII Characters
202
NMEA 0183 V3.0 Checksum Computation
202
Appendix D
203
Wind Measurement Averaging Method
203
Figure 47 Wind Measurement Averaging Method
204
Appendix E Factory Configurations
205
General Unit Settings
206
Wind Configuration Settings
206
Table 42 General Unit Settings
206
Table 43 Wind Configuration Settings
206
PTU Configuration Settings
207
Rain Configuration Settings
207
Supervisor Settings
207
Table 44 PTU Configuration Settings
207
Table 45 Rain Configuration Settings
207
Table 46 General Unit Settings
207
Appendix F Wiring External Sensors to Wxt536
209
Figure 48 Connecting External Sensors to WXT536
209
Connecting Snow Depth Sensor to WXT536
210
Figure 49 Connecting Snow Depth Sensor to WXT536
210
Figure 50 Wiring Snow Depth Sensor to WXT536
211
Connecting Pyranometer to WXT536
213
Figure 51 Connecting CMP3 to WXT536
213
Figure 52 Peeling CMP3 Cable Sheath
214
Figure 53 Wiring CMP3 to WXT53
215
Table 47 Table
216
Connecting Rain Gauge to WXT536
217
Figure 54 Wiring RG13 to WXT536
217
Table 49 Table
218
Figure 55 Complete Set of Accessories
220
Figure 56 WXT536 with Surge Protector WSP150
222
Figure 57 WXT536 with Surge Protector WSP152
224
Table 52 Table
227
Configuration Parameters
227
4
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Vaisala WXT536 Specifications
General
Brand
Vaisala
Model
WXT536
Category
Transmitter
Language
English
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