This material may not be reproduced, displayed, modified or distributed without the express prior written permission of. And never work on your wind speed meter during slippery conditions or in strong winds.Īll content on the WeatherShack Education Center is Copyright 2002-2020. Likewise, make absolutely certain that your mast will not come into contact with power lines if it falls. Always keep in mind the danger of falling or coming into contact with power lines. Use caution and common sense, Safety First! Consider asking a friend to help out it will make the job safer and easier. Failure to do so could be deadly.īe extremely careful when installing the anemometer and follow all procedures recommended by the manufacturer. Be aware also that any elevated metal pole can act as a lightning rod so be sure to ground it properly. The Pole Mount anemometer by Inspeed is portable and can function where AC power is not available. High winds and icy precipitation can place significant stress on the mast assembly so make sure the installation is sturdy. If the mast is roof mounted, position the supporting structure in an area that won't jeopardize roof construction. The Hand-Held led to the Pole Mount Anemometer - a popular, low cost instrument for folks who just like (or need) to know how hard the wind is blowing out there. When selecting your mounting system, take into consideration that you will occasionally need to access the anemometer for preventive maintenance and possible component replacement. Calypso Mast Mount Portable Solar Sensor & ULP Wired- CMI1015. It would be unfortunate to have to take it down after installation. Calypso Ultrasonic Portable Mini Wind Meter Anemometer. If you need to brush up on magnetic declination, visit Wikipedia.īefore erecting a tower or mast for your anemometer, check for possible height restrictions set by local ordinances and homeowner's association covenants. Do not use a GPS to make the determination, the magnetic compass is a more accurate tool to determine true north. Visit the National Geophysical Data Center (NGDC) page that will calculate it for your location. The best way to locate magnetic north is by using a magnetic compass and correct to true north by the magnetic declination for your area. The mast can easily be leveled using a carpenter's bubble level, but orientation to true north is a bit more problematic. Other requirements for the proper installation of an anemometer include mounting the mast absolutely vertical and orienting the wind direction indicator to true north for accurate wind direction readings. Unfortunately this is the reality of taking wind measurements and the choice of how to deal with it is ultimately yours. Local obstructions like nearby mature trees, houses and buildings all have the potential of impacting anemometer readings. Accuracy of the wind speed indicator is not just a matter of height. For a rooftop installation, the minimum height to avoid anomalous winds caused by the roof itself is 3 meters (10 feet) above the most exposed part. So what are your alternatives? Part of the answer to that is how accurate you want your measurements to be? Wind observations taken at 7 meters (23 feet) are accurate enough for the National Weather Service to accept. For most home weather stations installations, striking a compromise is likely the best alternative. Attaining this height can not only be difficult but expensive as well. The World Meteorological Organization has set the international standard height for wind measurement devices at 10 meters (33 feet) above ground, with no obstructions at or above this level. 8 Seventh Edition 2008 ISBN 978-92-63-10008-5.The goal of installing a wind speed meter (anemometer) is to position it in a location where the wind flows freely and is not influenced by nearby objects. Manufactured from stainless steel with no moving parts the sensor requires no on-site calibration and minimal maintenance.Customer selectable vector rolling average and 3-second gust in accordance with WMO - No. This WindObserver meets the requirements of Annex 3 to the Convention on International Civil Aviation Organization (ICAO) when supplied as part of a suitable AWOS*.With 150 Watts of electrical heating in the anemometer head producing 1 Watt/cm2 and tested in accordance with MILSTD810F, the unit is particularly suited to operate as part of Aviation Automatic Weather Observing Systems, which are often exposed to extreme weather conditions. The sensor has been accepted for service by both the FAA Federal Aviation Administration (USA) and the CAA Civil Aviation Authority (UK) for the observation and reporting of surface wind.
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