Vaisala WAT12 User manual

Analog Wind Transmitter
WAT12
USER'S GUIDE
M210309EN-A
June 2002

PUBLISHED BY
Vaisala Oyj Phone (int.):[phone]
P.O. Box 26 Fax: [phone]
FIN-00421 Helsinki
Finland
Visit our Internet pages at http://www.vaisala.com/
© Vaisala 2002
No part of this manual may be reproduced in any form or by any
means, electronic or mechanical (including photocopying), nor may its
contents be communicated to a third party without prior written
permission of the copyright holder.
The contents are subject to change without prior notice.
Please observe that this manual does not create any legally binding
obligations for Vaisala towards the customer or end user. All legally
binding commitments and agreements are included exclusively in the
applicable supply contract or Conditions of Sale.

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Table of Contents
CHAPTER 1
GENERAL INFORMATION .......................................................5
About This Manual..................................................5
Contents of This Manual.......................................5
Version Information...............................................6
Related Manuals...................................................6
Safety .......................................................................6
General Safety Considerations.............................6
Product Related Safety Precautions.....................7
ESD Protection .....................................................7
Regulatory Compliances........................................8
Warranty ..................................................................8
CHAPTER 2
PRODUCT OVERVIEW.............................................................9
Introduction to WAT12 Analog Wind
Transmitter ..............................................................9
CHAPTER 3
INSTALLATION ......................................................................11
Selecting Location................................................11
Installation Procedure ..........................................13
Jumper Settings..................................................14
Connections........................................................16
Sensor Wiring.................................................18
Signal Output..................................................19
Powering ........................................................21
Optional Heating Power..................................22
Wiring Examples ............................................23
Mounting the Thermostat Switch ........................26
Mounting.............................................................27
Mounting WAT12 to the Top of a Pole Mast...27
Mounting Wind Sensors to WAT12 ................28
Alignment............................................................29
Verification..........................................................29

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CHAPTER 4
MAINTENANCE...................................................................... 31
Periodic Maintenance .......................................... 31
Visual Checking ................................................. 31
Testing Proper Operation................................... 31
Replacing Consumables...................................... 33
Parts List for Consumables ................................ 33
CHAPTER 5
TROUBLESHOOTING............................................................ 35
Common Problems .............................................. 35
Error Messages .................................................... 35
Getting Help .......................................................... 36
Return Instructions .............................................. 37
CHAPTER 6
TECHNICAL DATA................................................................. 39
Specifications ....................................................... 39
List of Figures
Figure 1 WAT12 Analog Wind Transmitter ........................... 10
Figure 2 Recommended Mast Location in Open Area.......... 11
Figure 3 Recommended Mast Length on Top of
a Building ............................................................... 12
Figure 4 Location of the Jumpers ......................................... 14
Figure 5 Jumpers for the Setting: 4 ... 20 mA, 0° ... 360°,
0 ... 51.2 m/s........................................................... 15
Figure 6 Jumpers for the Setting: 1 ... 5 mA, 0° ... 360°,
0 ... 76.8 m/s........................................................... 16
Figure 7 Jumpers for the Setting: 0 ... 10 mA, 0° ... 540°,
0 ... 51.2 m/s........................................................... 16
Figure 8 Cable Shield Bent over the Plastic Sleeve
and O-ring .............................................................. 17
Figure 9 I/O Connectors ....................................................... 17
Figure 10 Wiring of the Sensors ............................................. 18
Figure 11 Typical System with 24 VDC Power Supply
and 5 mA Signal Currents ...................................... 19
Figure 12 Wiring for High Noise Environment ........................ 20
Figure 13 Long Distance Wiring ............................................. 20
Figure 14 Long Distance Wiring with Four Wires ................... 21
Figure 15 Default Heating Power Connection with both
Sensors .................................................................. 22

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Figure 16 Basic Wiring with WAA151 and WAV151
Sensors...................................................................23
Figure 17 Wiring with WHP151 Mains Power Supply .............24
Figure 18 Wiring with WHP25 Mains Power Supply
and the 252 Series Wind Sensors ..........................25
Figure 19 Mounting the Thermostat Switch inside
the WAT12 Junction Box ........................................26
Figure 20 Standard Connection for Thermostat Switch ..........27
Figure 21 Mounting WAT12 to the Top of a Pole Mast ...........27
Figure 22 Installation of the Wind Sensors WAA151 and
WAV151 to WAT12.................................................28
List of Tables
Table 1 Manual Revisions......................................................6
Table 2 Related Manuals.......................................................6
Table 3 Jumper Settings for the 1 to 5 mA Current Loop.....15
Table 4 I/O Connectors........................................................18
Table 5 Power Line Resistance with an 24 VDC Power
Supply.....................................................................21
Table 6 Jumper Selectable Reference Sources
for Testing...............................................................32
Table 7 Output Values for the Jumpers in the Test Mode....32
Table 8 Available Spare Parts .............................................33
Table 9 Some Common Problems and their Remedies.......35
Table 10 WAT12 Analog Wind Transmitter Specifications ....39

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Chapter 1 ___________________________________________ General Information
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CHAPTER 1
GENERAL INFORMATION
About This Manual
This manual provides information for installing and
maintaining WAT12 Analog Wind Transmitter.
Contents of This Manual
This manual consists of the following chapters:
- Chapter 1, General Information, provides important
safety, revision history, and warranty information for the
product.
- Chapter 2, Product Overview, introduces WAT12 Analog
Wind Transmitter features.
- Chapter 3, Installation, provides you with information
that is intended to help you install this product.
- Chapter 4, Maintenance, provides information that is
needed in basic maintenance of WAT12 Analog Wind
Transmitter.
- Chapter 5, Troubleshooting, describes common problems,
their probable causes and remedies, and provides contact
information.
- Chapter 6, Technical Data, provides technical data of
WAT12 Analog Wind Transmitter.

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Version Information
Table 1 Manual Revisions
Manual Code Description
T649en-1.1 WAT12 Analog Wind Transmitter -
Technical Reference.
M210309EN-A This manual, the first version of WAT12
Analog Wind Transmitter User's Guide.
Supersedes the above mentioned
Technical Reference.
Related Manuals
Table 2 Related Manuals
Manual Code Manual Name
M210293en WAA151 Anemometer - User's Guide
M210294en WAV151 Wind Vane - User's Guide
Safety
General Safety Considerations
Throughout the manual, important safety considerations are
highlighted as follows:
WARNING Warning alerts you to a serious hazard. If you do not read
and follow instructions very carefully at this point, there is
a risk of injury or even death.
CAUTION Caution warns you of a potential hazard. If you do not read
and follow instructions carefully at this point, the product
could be damaged or important data could be lost.

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NOTE Note highlights important information on using the product.
Product Related Safety
Precautions
WAT12 Analog Wind Transmitter delivered to you has
been tested for safety and approved as shipped from the
factory. Note the following precautions:
WARNING Ground the product, and verify the grounding of the
outdoor installation periodically to minimize shock hazard.
CAUTION Do not modify the unit. Improper modification can damage
the product or lead to malfunction.
ESD Protection
Electrostatic Discharge (ESD) can cause immediate or latent
damage to electronic circuits. Vaisala products are
adequately protected against ESD for their intended use.
However, it is possible to damage the product by delivering
electrostatic discharges when touching, removing, or
inserting any objects inside the equipment housing.
To make sure you are not delivering high static voltages
yourself:
- Handle ESD sensitive components on a properly
grounded and protected ESD workbench. When this is
not possible, ground yourself to the equipment chassis

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before touching the boards. Ground yourself with a wrist
strap and a resistive connection cord. When neither of the
above is possible, touch a conductive part of the
equipment chassis with your other hand before touching
the boards.
- Always hold the boards by the edges and avoid touching
the component contacts.
Regulatory Compliances
WAT12 Analog Wind Transmitter is a CE compliant
product.
Warranty
For certain products Vaisala normally gives a limited one
year warranty. Please observe that any such warranty may
not be valid in case of damage due to normal wear and tear,
exceptional operating conditions, negligent handling or
installation, or unauthorized modifications. Please see the
applicable supply contract or conditions of sale for details of
the warranty for each product.