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PWD22
Vaisala PWD22 User Manual
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USER'S GUIDE
____________________________________________________________________
102
_________________________________________________________________
M210543EN-E
Environmental Specifications
Table 23
Environmental Specifications
Property
Description / Value
Operating temperature
range
-40 ... +60
°
C
Operating humidity range
Up to 100 % RH
Wind speed
Up to 60 m/s
Sun orientation
Sunlight into t
he light receiver must be av
oided
103
105
Table of Contents
Default Chapter
3
Table of Contents
3
Chapter 1 General Information
11
About this Manual
11
Contents of this Manual
11
Version Information
12
Related Manuals
12
Documentation Conventions
12
Table 1 Manual Revisions
12
Table 2 Related Manuals
12
Safety
13
ESD Protection
15
Recycling
15
Regulatory Compliances
16
Trademarks
16
License Agreement
16
Warranty
16
Chapter 2 Product Overview
17
Introduction to Vaisala Present Weather Detector PWD22/52
17
Table 3 PWD Sensor Series Model and Performance Table
17
Hardware Structure
18
Using PWD22/52
18
Figure 1 PWD22/52 Present Weather Detector
18
Product Nomenclature
19
Table 4 Vaisala Present Weather Detector
19
Table 5 Nomenclature for Options of the Vaisala Present Weather Detector PWD Family
19
Chapter 3 Functional Description
21
Figure 2 PWD22/52 Block Diagram
22
Optical Measurements
23
Optical Arrangement
23
Transmitter Unit PWT11
23
Figure 3 PWD22/52 Optical System
23
Light Receiver
24
Additional Measurements
24
Vaisala RAINCAP ® Rain Sensor
24
Background Luminance Sensor PWL111 (Optional)
25
Figure 4 RAINCAP ® Block Diagram
25
BLCAL Command
26
BLSC Command
26
Continuous Mode
26
Day/Night Switch Mode
26
Disabling PWL111
26
Temperature Sensor
27
Applications
27
Figure 5 PWL111 Block Diagram
27
Internal Monitoring
28
Built-In Tests
28
Figure 6 LED Indicators on the PWC22/52 Board
28
Memory Tests
29
Signal Monitoring
29
Hardware Monitoring
29
Monitoring Contamination
30
Chapter 4 Installation
31
Selecting Location
31
Figure 7 Recommended Location of PWD22/52 Sensor
32
Grounding and Lightning Protection
33
Equipment Grounding
33
Internal Grounding of PWD22/52
33
Grounding the Remote Units and the Communication Cable
33
Installation Procedure
34
Unpacking Instructions
34
Storage
34
Unpacking Procedure
34
Mounting
35
Figure 8 Installing PWD22/52 to the Support Arm
35
Figure 9 Installing the Subassembly to the Mast with the Vaisala
35
Connections
36
Connecting Cables
36
Figure 10 Testing the Connector
36
Basic Wiring
37
Table 6 Receptable Connector Default Wiring
37
Figure 11 Cabling Principle
38
Figure 12 Maintenance Cable
38
Supplying Power to PWD22/52
39
Figure 13 PWL111 Jumper Settings
39
Internal Heaters and Heaters for PWL111 Option
39
PWH111 Hood Heaters
40
Communication Options
40
Serial Communication Settings
40
Serial Transmission RS-232
40
Connection of the Maintenance Terminal
41
Serial Multipoint Transmission RS-485
41
Relay Controls
42
Table 7 Control Logic of Relay Controls 1 and 2
42
Figure 14 Relay Connection: PWD22/52 Supplies
43
Table 8 Control Logic of Relay Controls 1, 2, and 3
43
Figure 15 Relay Connection: External Relay Supply
44
RELAY Command
45
Initial Settings
45
Table 9 Default Communication Settings
45
Table 10 Commands for Changing Default Settings
46
Table 11 Commands for Displaying and Changing Parameters
46
Weather Parameters
46
Verification
47
Chapter 5 Operation
49
Getting Started
49
Operating Instructions
50
Table 12 Initial Settings and Corresponding Commands
50
Table 13 Commands for Routine Maintenance Operations
50
Entering and Exiting the Command Mode
51
Close
51
Open
51
Figure 16 Illustration of Contents of Messages 0, 1, and 2
52
Message 0
53
Message 1
53
Message 2
54
Message 3
54
Message 4
54
Message 7
55
Messages 5 and 6
55
Message Types
52
Automatic Message Sending
56
Message Polling
57
Precipitation Sums
59
List of Commands
59
PWD22/52 Command Set
59
Help
59
Table 14 Command Set
59
Ames
60
Mes
60
Weather Related Commands
61
Wpar
61
Wset
61
Clrs
63
System Configuration Commands
64
Conf
64
Par
64
Baud
69
Hood Heaters
69
Analog Output
69
Figure 17 Analog Current Output Connection
70
Analog Output Modes
71
Figure 18 Analog Current Output Connection
71
Mode 0
71
Mode 1
72
Mode 2
72
Analog Output Calibration
73
Mode 3
73
Mode 4
73
Maintenance Commands
75
Sta
75
Cal
76
Table 15 Hardware Error Texts
76
Table 16 Warnings
76
Clean
77
Zero
77
Chec
78
Dry on
78
DRY on and WET
78
Heat
79
Wet
79
Other Commands
80
Date
80
Time
80
Reset
81
Ver
81
Chapter 6 Maintenance
83
Periodic Maintenance
83
Cleaning
84
Cleaning Lenses and Hoods
84
Cleaning RAINCAP
85
Calibration
85
Visibility Calibration
85
Calibration Check Procedure
86
Calibration Procedure
87
Figure 19 Assembling the Opaque Glass Plates
87
Removing and Replacing
88
Removing and Replacing the Optical Units
88
Figure 20 Removing PWT11
89
Removing PWT11
89
Figure 21 Opening Box Screws (1)
90
Removing PWC22/52
90
Figure 22 Removing the PWC15PB Protection Board
91
Figure 23 Removing the PWC22/52 Board
92
Figure 24 Removing the Rain Sensor
93
Replacing RAINCAP
93
Chapter 7 Troubleshooting
95
Common Problems
95
Message Indicating Warning or Alarm
95
Message Missing
95
Message Exists but Visibility Value Does Not
96
Visibility Value Is Continuously too Good
97
Visibility Constantly too Low
97
PWD22/52 Reports Precipitation When There Is None
98
PWD22/52 Reports Frozen Precipitation During Rain
98
PWD22/52 Electrical Troubleshooting
99
Technical Support
100
Product Returns
100
Chapter 8 Technical Data
101
Specifications
101
Mechanical Specifications
101
Table 17 PWD22/52 Specifications
101
Electrical Specifications
102
Optical Specifications
102
Table 18 PWD22/52 Electrical Specifications
102
Table 19 Optical Specifications of the Light Transmitter
102
Visibility Measurement Specifications
103
Weather Sensing Specifications
103
Table 20 Optical Specifications of the Light Receiver
103
Table 21 Visibility Measurement Specifications
103
Table 22 Weather Sensing Specifications
103
Environmental Specifications
104
Table 23 Environmental Specifications
104
Appendix A
105
Table 24 Values from STA Message for Internal Monitoring
105
Values for Internal Monitoring
105
Appendix B
109
Pwc22/52 Connectors and Jumper Settings
109
Figure 25 Location of Jumpers and Connectors on the PWC22/52 Processor/Receiver Board
111
Appendix Cnws and Wmo Code Tables
113
Table 25 Internal Weather Types and Supported NWS Codes
113
Table 26 WMO SYNOP Codes (Table 4680, W ) Used by PWD22/52
113
Table 27 WMO METAR Codes (Table 4678) Used by PWD22/52
114
Index
115
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Vaisala PWD22 Specifications
General
Brand
Vaisala
Model
PWD22
Category
Weather Station
Language
English
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