Vaisala WMS302 User`s guide

USER'S GUIDE
Combined Wind Sensor
WMS301 and WMS302
M210375en-A
PUBLISHED BY
Vaisala Oyj
P.O. Box 26
FIN-00421 Helsinki
Finland
Phone (int.):+358 9 8949 1
Fax:
+358 9 8949 2227
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.
___________________________________________________________________
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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User's Guide ________________________________________________________
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
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
WMS Series Combined Wind Sensor....................... 8
Recommended Mast Location in Open Area.......... 11
Recommended Mast Length on the Top of
a Building ............................................................... 12
WMS301 Connector ............................................... 13
WMS302 Connector ............................................... 13
WMS301 Principal Circuit Diagram ........................ 14
WMS302 Principal Circuit Diagram ........................ 15
WMS302 Factory Alignment (Models with the
Alignment Sleeve) .................................................. 15
Mounting of the Combined Wind Sensor................ 16
WMS301/WMS302 Installation with WMS30KIT .... 18
Aligning the Combined Wind Sensor...................... 19
WMS Assembly ...................................................... 23
Dimensions (in mm) of the Combined Wind
Sensor.................................................................... 29
List of Tables
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Manual Revisions ..................................................... 4
WMS Series Wind Sensor Nomenclature................. 9
Available Spare Parts............................................. 24
Some Common Problems and their Remedies ...... 25
Anemometer Specifications.................................... 27
Vane Specifications................................................ 28
Common Specifications.......................................... 28
2 ______________________________________________________ M210375en-A
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 Wind Sensor.
Contents of This Manual
This manual consists of the following chapters:
- Chapter 1, General Information, provides general notes
for the product.
- Chapter 2, Product Overview, introduces the WMS301
and WMS302 Combined Wind Sensor features.
- Chapter 3, Installation, provides you with information
that is intended to help you install the wind sensor.
- Chapter 4, Maintenance, provides information that is
needed in basic maintenance of the product.
- Chapter 5, Troubleshooting, describes common problems,
their probable causes and remedies, and contact
information.
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User's Guide ________________________________________________________
- Chapter 6, Technical Data, provides the technical data of
WMS301 and WMS302 Combined Wind Sensor.
Version Information
Table 1
Manual Revisions
Manual Code
M010030en-C
M210375en-A
Description
WMS301 & WMS302 Combined Wind
Sensors Quick Reference Guide
First version of the WMS301 and
WMS302 Combined Wind Sensor User's
Guide. Replaces the above mentioned
Quick Reference Guide.
Feedback
Vaisala Customer Documentation Team welcomes your
comments and suggestions on the quality and usefulness of
this publication. If you find errors or have other suggestions
for improvement, please indicate the chapter, section, and
page number. You can send comments to us by e-mail:
manuals@vaisala.com
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.
4 ______________________________________________________ M210375en-A
Chapter 1 ___________________________________________ General Information
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.
NOTE
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:
WARNING
Ground the product, and verify outdoor installation
grounding 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:
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User's Guide ________________________________________________________
- Handle ESD sensitive components on a properly
grounded and protected ESD workbench. When this is
not possible, ground yourself 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 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
The WMS301 and WMS302 sensors comply with the
following performance and environmental test standards:
- Mechanical vibration test per 1EC-68-2-6 Fc
- RF field emission 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
Warranty
For certain products Vaisala normally gives a limited oneyear 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.
6 ______________________________________________________ M210375en-A
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 speed 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 been
carefully designed to achieve maximum measurement
quality. The conical 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, and a shaft
fixed magnet. A reed relay with electronics 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 transients. In the latter method
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User's Guide ________________________________________________________
averaging of transient intervals should be used, since two
pulses with non-symmetric positioning are generated during
one revolution.
The balanced wind vane is integrated 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
2
3
= The cup wheel assembly
= The vane assembly
= The sensor compartment
WMS301 is equipped with a one-wiper 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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Chapter 2 ____________________________________________ Product Overview
WMS302 has a two-wiper type potentiometer to overcome
the wind direction discontinuity. However, a more complex
voltage-to-direction conversion process is needed.
Product Nomenclature
Table 2
Basic
WMS Series Wind Sensor Nomenclature
Code
WMS301
WMS302
Options
WMS30KIT
Common Name
Combined Wind Sensor with one
wiper potentiometer
Combined Wind Sensor with two
wiper potentiometers
Installation Accessories to be used
with pole masts
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10 _____________________________________________________ M210375en-A
Chapter 3 __________________________________________________ Installation
CHAPTER 3
INSTALLATION
This chapter provides you with information that is intended
to help you install the wind sensor.
Selecting Location
Allow sufficient clearance for the wind sensor. Install the
wind sensor away from buildings or any other objects that
might affect the airflow.
0212-221
Figure 2
Recommended Mast Location in Open Area
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User's Guide ________________________________________________________
In general, any object of height (h) will not remarkably
disturb the wind measurement at a minimum distance of
10 × h. There should be at least 150 m open area to all
directions from the mast. Refer to Figure 2 on page 11.
0212-222
Figure 3
Recommended Mast Length on the Top of a
Building
The recommended minimum length (h in Figure 3 above)
for the mast that is installed on the top of a building is 1.5
times the height of the building (H). When the diagonal (W)
is less than the height (H) the minimum length of the mast is
1.5 × W.
Connector
The WMS301 connector is shown in Figure 4 on page 13.
The WMS302 connector is shown in Figure 5 on page 13.
Type M12 female connector, for example, made by
Lumberg, Phoenix, or Binder is suitable for connecting the
cable to the sensor.
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Chapter 3 __________________________________________________ Installation
0212-223
Figure 4
WMS301 Connector
The following numbers refer to Figure 4 above.
1
2
3
4
5
=
=
=
=
=
+Vref, voltage input
DIR, signal output, wind direction
GND, ground
GND, ground
SPD, signal output, wind speed
0212-223
Figure 5
WMS302 Connector
The following numbers refer to Figure 5 above.
1
2
3
4
5
=
=
=
=
=
+Vref, voltage input
DIR1, signal output, wind direction
GND, ground
DIR2, signal output, wind direction
SPD, signal output, wind speed
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User's Guide ________________________________________________________
A pull up resistor, for example, 10 kΩ, is needed at SPD
output to supply the anemometer electronics. It is
recommended to use a Schmitt-trigger input with the SPD
signal.
Installation Procedure
Initial Check
After you have unpacked the sensor, check for any signs of
shipping damage. Also test that the vane and cup wheel
rotate without friction.
Before installation, use an ohmmeter to check the proper
operation of speed (SPD) and direction (DIR1 and DIR2)
outputs while rotating the cup wheel and vane slowly. For
measuring the direction, note that 10 kΩ/360º and
10 kΩ/180° potentiometers are used with WMS301 and
WMS302 respectively. For the principal circuit diagrams,
refer to Figure 6 below and Figure 7 on page 15.
0212-224
Figure 6
WMS301 Principal Circuit Diagram
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Chapter 3 __________________________________________________ Installation
0212-225
Figure 7
WMS302 Principal Circuit Diagram
The WMS302 sensor is aligned at the factory according to
Figure 8 below. This factory alignment applies to all models
with the alignment sleeve. The alignment sleeve is secured
with a small size Allen bolt to the sensor body.
0212-226
Figure 8
WMS302 Factory Alignment (Models with
the Alignment Sleeve)
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Mounting
Mounting Sensor to the Wind Sensor Mast
After a proper location for wind measurement has been
selected, you can mount the sensor to the wind sensor mast.
The diameter of the wind sensor mast is 30 mm. To mount
the sensor, do the following:
1.
Fit the cable (number 2 in Figure 9 below) through the
mounting piece (3) and connect the cable to the sensor.
0212-227
Figure 9
Mounting of the Combined Wind
Sensor
2.
Place the mounting piece (3) on the top of the mast and
align the tap (5) to north.
3.
Align the notch (4) to the tap (5) and attach the sensor
to the mounting piece with the plastic collar (1).
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Chapter 3 __________________________________________________ Installation
4.
Secure the mounting piece (3) to the mast by tightening
the mounting screw (6).
5.
Route the sensor cable down along the mast and
always attach the cable to the mast with cable ties.
6.
Mount the wind sensor mast firmly to a solid base, for
example, to a pole mast.
7.
Connect the signal cable to a data logger or display
device.
Mounting to a Pole Mast with WMS30KIT
You can mount the wind sensor with a mast on the top of a
pole mast using WMS30KIT. When the mast is high, use a
combined wind sensor with a 10 m cable. You can mount
the wind sensor mast to a metallic or wooden mast.
WARNING
Do not install the wind sensor above the top of the
lightning protection rod.
To mount the wind sensor mast to a metallic mast, do the
following (the numbers refer to Figure 10 on page 18):
1.
Install the plastic protective plate (5) between the mast
(6) and the mounting piece.
2.
Attach the mounting piece to the mast (6) using the
large clamps.
3.
Attach the wind sensor mast with the wind sensor (1)
to the mast (6) using the smaller clamps.
4.
Secure the cable with the fixed cable tie (3) to the wind
sensor mast.
5.
Route the sensor cable down along the mast and
always attach the cable to the mast with cable ties.
6.
Connect the signal cable to a data logger or display
device.
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1
2
6
5
3
4
2
3
0103-010
Figure 10 WMS301/WMS302 Installation with
WMS30KIT
The following numbers refer to Figure 10 above:
1
2
3
4
5
6
=
=
=
=
=
=
WMS301 or WMS302
Wood screws
Cable tie
Wooden mast
Plastic protective plate
Pole mast
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Chapter 3 __________________________________________________ Installation
To mount the wind sensor mast to a wooden mast, do the
following (the numbers refer to Figure 10 on page 18):
1.
Attach the mounting piece with the wood screws (2) to
the wooden mast (4) through the wind sensor mast.
2.
Secure the cable with the fixed cable tie (3) to the wind
sensor mast.
3.
Route the sensor cable down along the mast and
always attach the cable to the mast with cable ties.
4.
Connect the signal cable to a data logger or display
device.
Aligning the Sensor
If you need to align the combined wind sensor, use the data
logger or display device to monitor the instant wind
direction. To align the combined wind sensor, do the
following (numbers refer to Figure 11 below):
1.
Place the mounting piece (2) on the top of the wind
sensor mast and attach the sensor to the mounting piece
(4) with the plastic collar (3).
0201-034
Figure 11 Aligning the Combined Wind Sensor
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2.
Choose a known wind direction reference point on the
horizon with the help of a compass.
3.
Point the nose (1) of the vane at the reference point.
4.
Hold the vane in position and slowly rotate the
mounting piece (4) until wind direction shows proper
value.
5.
Secure the mounting piece (4) to the mast by tightening
the mounting screw.
20 _____________________________________________________ M210375en-A
Chapter 4 ________________________________________________ Maintenance
CHAPTER 4
MAINTENANCE
This chapter provides information that is needed in basic
maintenance of the product.
Periodic Maintenance
Testing Proper Operation
It is recommended to check the ball bearings of the
anemometer and the vane every year. If the cup wheel or the
vane is not rotating smoothly or it creates detectable noise,
the bearings must be replaced.
Replacing Consumables
Only a trained technician should replace the bearings.
If your sensor includes the alignment sleeve and the factory
alignment has not been altered, you can simply remove and
remount the sensor to its place with the plastic collar
without realigning.
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User's Guide ________________________________________________________
To replace the ball bearings, do the following (the numbers
refer to Figure 12 on page 23):
Anemometer bearings:
1.
Loosen the hubnut (14) with fingers or a 10 mm tool
and remove the cup wheel (13).
2.
Remove the ball bearing assembly (12) by unscrewing
it counterclockwise (with a 10 mm tool).
3.
Insert a new bearing assembly (12). Tighten gently.
4.
Fasten the cup wheel to the sensor. Tighten gently.
Vane bearings:
1.
Proceed as described in steps 1 and 2 above.
2.
Open the lock screw (11) of the tail assembly (10) and
remove the screw.
3.
Remove the Seeger-ring (9) (with narrow point pliers).
4.
Remove the bearing assembly (8).
5.
Replace the bearings inside the housing with new ones.
6.
Assemble the sensor in the reverse work order.
Note that part number 6 in Figure 12 on page 23 consists of
two parts. The lower portion has a notch that is aligned at
the factory in relation to the output of the potentiometer to
point north when the sensor is mounted.
The following numbers refer to Figure 12 on page 23:
1
2a
2b
3
4
5
6
7
8
9
=
=
=
=
=
=
=
=
=
=
Casing
Reed switch PCB
Potentiometer PCB
Retainer
Sleeve
O-ring
Base part
Mast adapter sleeve
Bearing assembly
Seeger ring
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Chapter 4 ________________________________________________ Maintenance
10
11
12
13
14
=
=
=
=
=
Tail assembly
Lock screw
Bearing assembly
Cup wheel
Hubnut
0009-022
Figure 12 WMS Assembly
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User's Guide ________________________________________________________
Parts List for Consumables
Table 3
Available Spare Parts
Spare Part
Cup wheel assembly
Anemometer bearing assembly
Vane assembly
Set of bearings
Order Code
WA45233
WA45232
WA35234
25160WA
24 _____________________________________________________ M210375en-A
Chapter 5 ______________________________________________ Troubleshooting
CHAPTER 5
TROUBLESHOOTING
This chapter describes common problems, their probable
causes and remedies, and contact information.
Common Problems
Table 4
Problem
The data is not
received from the
sensor.
Some Common Problems and their
Remedies
Probable Cause
The sensor is mechanically
damaged.
Remedy
Check the cables and
connectors.
The sensor is not powered
properly.
Check that the supply voltage
is 3 to 15 VDC
Technical Support
For technical questions, contact the Vaisala technical
support:
E-mail
helpdesk@vaisala.com
Telephone
+358 9 8949 2789
Fax
+358 9 8949 2790
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User's Guide ________________________________________________________
Return Instructions
If the product needs repair, please follow the instructions
below to speed up the process and avoid extra costs.
1.
Read the warranty information.
2.
Write a Problem Report with the name and contact
information of a technically competent person who can
provide further information on the problem.
3.
On the Problem Report, please explain:
- What failed (what worked / did not work)?
- Where did it fail (location and environment)?
- When did it fail (date, immediately / after a while /
periodically / randomly)?
- How many failed (only one defect / other same or
similar defects / several failures in one unit)?
- What was connected to the product and to which
connectors?
- Input power source type, voltage and list of other
items (lighting, heaters, motors etc.) that were
connected to the same power output.
- What was done when the failure was noticed?
4.
Include a detailed return address with your preferred
shipping method on the Problem Report.
5.
Pack the faulty product using an ESD protection bag of
good quality with proper cushioning material in a
strong box of adequate size. Please include the
Problem Report in the same box.
6.
Send the box to:
Vaisala Oyj
SSD Service
Vanha Nurmijärventie 21
FIN-01670 Vantaa
Finland
26 _____________________________________________________ M210375en-A
Chapter 6 _______________________________________________Technical Data
CHAPTER 6
TECHNICAL DATA
This chapter provides the technical data of WMS301 and
WMS302 Combined Wind Sensor.
Specifications
Table 5
Anemometer Specifications
Property
Sensor / Transducer type
Measuring range
Starting threshold
Distance constant
Transducer output
Accuracy
(≤ 10 m/s)
(> 10 m/s)
Transfer function, where
U = wind speed [m/s]
F = output frequency [Hz]
Description/Value
Dual Reed switch
0.5 ... 60 m/s
< 0.4 m/s
2m
1 Hz ~ 0.7 m/s
± 0.3 m/s
error < 2 %
U = - 0.24 + F × 0.699
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Table 6
Vane Specifications
Property
Sensor / Transducer type
Measuring range
WMS302
WMS301
Starting threshold
Damping ratio
Overshoot ratio
Delay distance
Accuracy
Table 7
0 ... 360°
0 ... 355°
< 1.0 m/s
0.3
0.4
0.6 m
Better than ± 3°
Common Specifications
Property
Supply voltage
Electrical connections
Body material
Cup material
Vane material
Operating temperature
Storage temperature
Dimensions
Weight
Description/Value
Potentiometer
Description/Value
3 ... 15 VDC
5-pin male with 12 mm
threads
AlMgSi, gray anodized
PA, reinforced with carbon
fiber; black
PA, reinforced with glass fiber,
white
- 40 ... + 55 °C (-40 ... +131°F)
- 60 ... + 65 °C (-76 ... +149°F)
265 (h) × 360 (w) mm
(10.4 (h) × 14.2 (w) in)
360 g (12.7 oz)
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Chapter 6 _______________________________________________Technical Data
Dimensions
0212-228
Figure 13 Dimensions (in mm) of the Combined Wind
Sensor
MTBF
The calculated mean time between failure is 4.4 × 105 h for
permanent installations. The value equals to 2.27 when
expressed in a failure frequency during 106 hours of use.
MTTR
Mean time to repair is 0.2 h.
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*M210375EN*