USER'S GUIDE Cross Arm WAC151 M210349en-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.
___________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION .......................................................3 About This Manual..................................................3 Contents of This Manual.......................................3 Version Information...............................................4 Related Manuals...................................................4 Safety .............................................................
User's Guide ________________________________________________________ CHAPTER 5 TROUBLESHOOTING............................................................ 19 Common Problems .............................................. 19 Getting Help .......................................................... 19 Return Instructions .............................................. 20 CHAPTER 6 TECHNICAL DATA................................................................. 21 Specifications ...............................
Chapter 1 ___________________________________________ General Information CHAPTER 1 GENERAL INFORMATION About This Manual This manual provides information for installing and maintaining WAC151 Cross Arm. 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 WAC151 Cross Arm features.
User's Guide ________________________________________________________ Version Information Table 1 Manual Revisions Manual Code T648en-1.1 M210349en-A Description WAC151 Cross Arm - Technical Reference This manual, the first version of the WAC151 Cross Arm User's Guide. Supersedes the above mentioned Technical Reference.
Chapter 1 ___________________________________________ General Information NOTE Note highlights important information on using the product. Product Related Safety Precautions WAC151 Cross Arm 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.
User's Guide ________________________________________________________ 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. Warranty For certain products Vaisala normally gives a limited one year warranty.
Chapter 2 ____________________________________________ Product Overview CHAPTER 2 PRODUCT OVERVIEW This chapter introduces WAC151 Cross Arm features. Introduction to WAC151 Cross Arm The WAC151 Cross Arm assembly supports the installation of the Vaisala WAA151 Anemometer and WAV151 Wind Vane, or WAA252 Heated Anemometer and WAV252 Heated Wind Vane.
User's Guide ________________________________________________________ 0210-033 Figure 1 WAC151 Cross Arm The following numbers refer to Figure 1 above: 1 2 3 = Flange for mounting a Vaisala anemometer = Junction box = Flange for mounting a Vaisala wind vane 8 ______________________________________________________ M210349en-A
Chapter 3 __________________________________________________ Installation CHAPTER 3 INSTALLATION This chapter provides you with information that is intended to help you install this product. Selecting Location Allow sufficient clearance for the wind sensors. Wind sensors should not be located next to a building or any other object that might affect the flow of air.
User's Guide ________________________________________________________ In general, any object of height (h) will not remarkably disturb wind measurement at a minimum distance of 10 × h. There should be at least 150 m open area in all directions from the mast. Refer to Figure 2 on page 9. 0204-041 Figure 3 Recommended Mast Length on Top of a Building The recommended minimum length (marked with the letter h in Figure 3 above) for the mast that is installed on top of a building is 1.
Chapter 3 __________________________________________________ Installation For installation, follow the procedure below: 1. Remove the four screws holding the cover of the junction box. Remove the cover. 2. Lead the power and signal cables through the cable gland(s). For better protection against RF interference, bend the cable shield as illustrated in Figure 4 below. 0206-046 Figure 4 3.
User's Guide ________________________________________________________ 0206-059 Figure 5 6. Mounting WAC151 to the Top of a Pole Mast Mount the sensors onto the cross arm. Refer to Figure 6 below.
Chapter 3 __________________________________________________ Installation The following numbers refer to Figure 6 on page 12: 1 2 3 4 5 6 7 8 WARNING = = = = = = = = Anemometer Cup assembly Wind Vane Tail assembly Cross arm WAC151 Connector Mounting flange South North Using a long cable between different units (sensors, transmitters, power supplies, and displays) can cause a lethal surge voltage, if a lightning strike occurs in the vicinity.
User's Guide ________________________________________________________ 0210-034 Figure 7 Wiring Diagram for 151 Series Sensors 252 Series Wind Sensors Figure 8 on page 15 provides the wiring diagram for the 252 series wind sensors mounted on WAC151 Cross Arm. When using the standard power and signal cables (ZZ45049 and ZZ45048) the connections are made as follows: 1.
Chapter 3 __________________________________________________ Installation 0210-035 Figure 8 Wiring Diagram for 252 Series Sensors Alignment After mounting the WAC151 cross arm to the mast, check that the anemometer end of the cross arm is pointing north with the required accuracy, see Figure 5 on page 12. To ensure correct assemblage after aligning WAC151, the sensors can only be mounted in one way.
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Chapter 4 ________________________________________________ Maintenance CHAPTER 4 MAINTENANCE This chapter provides information that is needed in basic maintenance of WAC151 Cross Arm. Periodic Maintenance Visual Checking Check every 1 to 2 years that the printed circuit board is not corroded.
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Chapter 5 ______________________________________________ Troubleshooting CHAPTER 5 TROUBLESHOOTING This chapter describes common problems, their probable causes and remedies, and provides contact information. Common Problems Table 3 Some Common Problems and their Remedies Problem Data is not received by the data collection system. Shaft heating of the 151 series sensors is not working. Probable Cause Improper or loose connections Improper or loose connections Heating is not connected.
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.
Chapter 6 _______________________________________________Technical Data CHAPTER 6 TECHNICAL DATA This chapter provides technical data of WAC151 Cross Arm. Specifications Table 4 WAC151 Cross Arm Specifications Property I/O connectors Cable entries Signal cable Sensor cables Thermostat switch Mounting Material Cross Arm Junction Box Dimensions Cross Arm length Junction Box Weight Description / Value Screw terminal connectors (15 pcs) for the sensors and power lines.
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