Can anyone give me feed back on anemometer's they are using? Brand and model? Durability and cost beign the two main concerns. Do people have these mounted on their towers? How (wired or wireless)? Thank you in Advance, Joshua
I use a weather channel unit bought at wal-mart for around $50..works very well and it is mounted on one of my towers,just a hair under the blades lenth.
Inspeed. Last forever and are very reasonably priced. http://inspeed.com/anemometers/default.asp If all you need is wind speed, the $79 VORTEX "POLE MOUNT" is a good one. The DIY kit of it is just $59. Mount below the blade sweep by several feet and 5 feet away from a wide tower if possible on it's own arm.
Here a vid I just posted related to wind speed measuring: http://www.youtube.com/watch?v=2kDeO4XVjYs What triggered me was a video of a guy with a car PMA 60-inch turbine at 40-feet claiming 17A at 17mph (220w) and he had the instrumentation to show it. Under closer examination, I found that his anemometer was under the eave of his porch to keep the snow off of it! :shock: I crunched the numbers and the turbine was actually seeing 28mph, where 220w made more sense.
Minnesota, Thanks for the video, I never thought about that! Joshua I have extra tabs on my tower to place an anemometer. Just need to research a quality product and get it up there. A wireless unit would be nice, even if the batteries would need to be changed often.
Very good info. Just goes to show that most of the info out there has a high chance to be bad data. Great Work. Joshua
Hi Joshua, I use the Davis, Weather Wizard III. http://www.davisnet.com/weather/product ... um=07425CS It's likely much more expensive than you had in mind at $295 but is a very nice setup. I've had this for a number of years now and wouldn't want to be without it. No data logging with this model, but it has a recall feature that records max/ min of wind speeds, temps in/ out and rainfall. Logging may be something to consider so yours doesn't need to be monitored on a constant basis, data can be pinpointed to specific time periods and give a better overall picture of weather history. I think you can probably find something better tailored to your project but wanted to let you know what I am using. Hope this helps, timber
Davis specs. Just looked up the specs on this anemometer. Wind Speed (large wind cups) . . . . . . . . . . . . . . . . . ±2 mph (2 kts, 3 km/h, 1 m/s) or ±5%, whichever is greater :shock: Wind Speed (small wind cups) . . . . . . . . . . . . . . . . . ±3 mph (3 kts, 5 km/h, 1.5 m/s) or ±5%, whichever is greater This $140 professional one from APRS is 10-times more accurate ±0.2mph: http://aprsworld.com/sensors/anemometer40/
:shock: :!: :cry: :evil: Good thing I don't depend on Davis for any critical data ... I'll shop around (and check the specs much closer) in the future. Always glad to see an expose' ... timber
