Vaisala WM30 User Manual
r
USER'S GUIDE
Combined Wind Senso
WMS301 and WMS302
M210375en-A
PUBLISHED BY
Vaisala Oyj Phone (int.):+358 9 8949 1
P.O. Box 26 Fax: +358 9 8949 2227
FIN-00421 Helsinki
Finland
Visit our Internet pa ge s 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 communicate d 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 f or Vaisala towards the customer or end user. All legally
binding commitme nts 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.......................................................3
About This Manual..................................................3
Contents of This Manual.......................................3
Version Information...............................................4
Feedback..............................................................4
Safety.......................................................................4
General Safety Considerations.............................4
Product Related Safety Precautions.....................5
ESD Protection.....................................................5
Regulatory Compliances........................................6
Warranty..................................................................6
CHAPTER 2
PRODUCT OVERVIEW.............................................................7
Introduction to WMS Series Wind Sensors..........7
Product Nomenclature ...........................................9
CHAPTER 3
INSTALLATION ......................................................................11
Selecting Location................................................11
Connector..............................................................12
Installation Procedure..........................................14
Initial Check........................................................14
Mounting.............................................................16
Mounting Sensor to the Wind Sensor Mast....16
Mounting to a Pole Mast with WMS30KIT......17
Aligning the Sensor.............................................19
CHAPTER 4
MAINTENANCE......................................................................21
Periodic Maintenance...........................................21
Testing Proper Operation ...................................21
Replacing Consumables.....................................21
Parts List for Consumables.................................24
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CHAPTER 5
TROUBLESHOOTING............................................................25
Common Problems .............................................. 25
Technical Support................................................25
Return Instructions.............................................. 26
CHAPTER 6
TECHNICAL DATA.................................................................27
Specifications....................................................... 27
Dimensions........................................................... 29
MTBF .....................................................................29
MTTR .....................................................................29
List of Figures
Figure 1 WMS Series Combined Wind Sensor.......................8
Figure 2 Recommended Mast Location in Open Area..........11
Figure 3 Recommended Mast Length on the Top of
a Building ...............................................................12
Figure 4 WMS301 Connector............................................... 13
Figure 5 WMS302 Connector............................................... 13
Figure 6 WMS301 Principal Circuit Diagram........................ 14
Figure 7 WMS302 Principal Circuit Diagram........................ 15
Figure 8 WMS302 Factory Alignment (Models with the
Alignment Sleeve)..................................................15
Figure 9 Mounting of the Combined Wind Sensor................ 16
Figure 10 WMS301/WMS302 Installation with WMS30KIT.... 18
Figure 11 Aligning the Combined Wind Sensor......................19
Figure 12 WMS Assembly...................................................... 23
Figure 13 Dimensions (in mm) of the Combined Wind
Sensor....................................................................29
List of Tables
Table 1 Manual Revisions.....................................................4
Table 2 WMS Series Wind Sensor Nomenclature................. 9
Table 3 Available Spare Parts............................................. 24
Table 4 Some Common Problems and their Remedies......25
Table 5 Anemometer Specifications....................................27
Table 6 Vane Specifications................................................28
Table 7 Common Specifications..........................................28
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Chapter 1 ___________________________________________General Information
CHAPTER 1
GENERAL INFORMATION
This chapter provides general notes for the product.
About This Manual
This manual provides information for installing,
maintaining, and troubleshooting WMS301 and WMS302
Combined W ind Sensor.
Contents of This Manual
This manual consists of the following chapters:
- Chapter 1, General Information, provides gen eral notes
for the product.
- Chapter 2, Product Overview, introduces the W M S301
and WMS302 Com bined Wind Sensor features.
- Chapter 3, Ins tallation, provides you with inform ation
that is inte nded to help you install the wind sensor.
- Chapter 4, Maintenance, provides informatio n that is
needed in basic maintenance of t he product.
- Chapter 5, Tro ubleshooting, describes common problems,
their probable ca uses and remedies, and contact
information.
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- Chapter 6, Technical Data, provides the technical data of
WMS301 and WMS302 Combined Wind Sensor.
Version Information
Table 1 Manual Revisions
Manual Code Description
M010030en-C WMS301 & WMS302 Combined Wind
Sensors Quick Reference Guide
M210375en-A First version of the WMS301 and
WMS302 Combined Wind Sensor User's
Guide. Replaces the above mentioned
Quick Reference Guide.
Safety
Feedback
Vaisala Customer Documentation Team welcom es your
comments and suggestions on the quality and usefulness of
this publicati on. If you find errors or have other suggestions
for improvement, please indicate the chapter, section, and
page number. Y ou can send comments to us by e-mail:
manuals@vaisala.com
General Safety Considerations
Throughout the manual, important safety considerations are
highlighted as follows:
WARNING
4 ______________________________________________________ M210375en-A
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.
Chapter 1 ___________________________________________General Information
CAUTION
NOTE
WARNING
Caution warns you of a potential hazard. If you do not read
and follow instructions carefully at this point, the product
could be dama ged or important data could be los t.
Note highlights important information on using the product.
Product Related Safety Precautions
The device delivered to you has been tested for safety and
approved as shipped from the factory. Note the following
precautions:
Ground the product, and verify outdoor installation
grounding periodically to minimize shock hazard.
CAUTION
Do not modify the unit. Improper modificatio n can damage
the product o r lead to malfunction.
ESD Protection
Electrostatic Discharge (ESD) can cause immediate or latent
damage to electronic circuits. Vaisala products are
adequately protected agains t ESD for their intended use.
However, it is possible to dam a ge the produ ct by deliver i ng
electrostatic discharges when touching, removing, or
inserting any objects inside the equipment housing.
To make sure you are not delivering high static voltages
yourself:
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- Handle ESD sensitive components on a properly
grounded and protected ESD w orkbench. When this is
not possible, ground yourse lf to the equipment chassis
before touching the boards. Ground yourself with a wrist
strap and a resistive connection cord. When neither of the
above is possible, touch a cond uctive part of the
equipment chassi s with y our other ha nd befo re to uc hin g
the boards.
- Always hold the boards by the edges and avoid touching
the component contacts.
Regulatory Compliances
The WMS301 and WMS302 sensors comply with the
following performance and environmental test standards:
Warranty
- Mechanical vibration test per 1EC-68-2-6 Fc
- RF field emissi on test per EN 55022 Class B
- Conducted immunity tests
- Electrostatic discharge EN61000-4-2
- RF field immunity EN6100-4-3
- Fast transient burst EN61000-4-4
For certain prod ucts Vaisala n ormally gives a l imited oneyear warranty. Please obser ve 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.
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Chapter 2 ____________________________________________ Product Overview
CHAPTER 2
PRODUCT OVERVIEW
This chapter introduces the WMS301 and WMS302
Combined Wind Sensor features.
Introduction to WMS Series Wind Sensors
WMS series wind sensors are compact sized instruments
with the wind sp eed and direction sensors integrated into
one unit. The sensor electronics is located inside a
watertight compartment providing full protection against
water, dust, pollutants, and electromagnetic interference.
The cup wheel shape, dimensions, and material have bee n
carefully designed to achieve maximum measurement
quality. The co nical cups have been tested to give linear
response between wind speed and angular velocity of the
cup wheel. The polyamide plastic reinforced with carbon
fiber guarantees a rigid structure even at the highest wind
speeds.
The anemometer ball bearing assembly is composed of a
wheel shaft, a pair of low friction ball bearings, a nd a shaft
fixed magnet. A reed relay with e lectronics located in the
body of the sensor converts the cup wheel rotation to pulses.
Therefore, when properly supplied the sensor can be read
practically with any data logger, either by counting the
number of pulses within a fixed time period or measuring
the time between successive trans ients. In the latter method
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averaging of transient interval s should be used, since two
pulses with non-symmetric positioning are generated during
one revolution.
The balanced wind vane is integ rated in the housing,
underneath the cup wheel. The circular tail is located far
enough from the body and the cup wheel to avoid
turbulence due to these structures. The vane assembly is
made of PA reinforced with glass fiber providing durable
and lightweight structure with fast response and low inertia.
The angular position of the vane is detected using an axial
symmetric rotating potentiometer. The potentiometer
features low starting and running torque, linear arc-toresistance transfer ratio, and long operation life.
0212-220
Figure 1 WMS Series Combined Wind Sensor
The following numbers refer to Figure 1 above:
1 = The cup wheel assembly
2 = The vane assembly
3 = The sensor compartment
WMS301 is equipped with a one-wip e r type potentiometer
with an open gap of only 5 degrees. With constant voltage
applied to the potentiometer, the output voltage is directly
proportional to the azimuth angle.
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