Portable wind speed measurement
Original post
Does anyone have any experience with gauging wind speed reasonably accurately?
For me it's mostly just a curiousity, as I'd like to be able to measure what I actually experience in certain places when I visit them, compare what I measure with forecasts, and so on.
With a speedy web search I stumbled on this portable Anemometer device off a random bargain website, which I'm guessing is just a represenative device for what the market offers: http://www.its-a-steal.co.nz/Harley-Wind-Speed-Meter-.htm
Does anyone have any experience playing with this type of thing in a tramping context? Is there anything that's especially good compared with alternatives?
19 comments
11–19 of 19
Page: 12
um. supercheap auto have shops all over the country,
http://www.supercheapauto.co.nz/store-locator/state/North%20Island.aspx
beaufort scle on it right up to twelve
thats above 118kph or moderate breeze in Wellington.(I live in Wellington too)
|Im not sure I could hold my hand above my head long enough and steady enough to get a reading in anything above that.
so i tested my anemometer out on the motorway, hanging it out the window at 80k's into a head wind,, the specs say it measures to 90kph but i saw it register 115... so who knows how high it really does go....
Do you know if there was any wind at the time? (If so, it might have interfered with the reading compared with the vehicle speed.)
I wouldn't be too surprised if they get less accurate towards the extremes, but that's just a guess. It'd be interesting to know.
@waynowski, what sort of data storage does your one offer? Does it give you any possible way to record readings from specific times for later extraction to another device, or even for reading later off the display?
If I can remember a reading and then match it to a specific time, that'd be useful because it can be correlated afterwards with position (and time) from a GPX file.
Because of the way the wind goes round the car it would be nearly impossible to get an accurate reading. Try holding it out at full arms length but watch for oncoming traffic. Other drivers dont like anemometers shoved through there windscreen. (it might also hurt)
Motorbike or pushbike may be more accurate. Less of a aerofoil effect to try and avoid. That's assuming you have a speedo. if not, you could hold a GPS with one hand and the anemometer with the other and compare readings!
zero data storage
as i said we were driving into a reasonable head wind,, the branches on the trees were swaying... i had my hand out the window to my elbow. 115k's may well be an accurate reading of the headwind
11–19 of 19
Page: 12
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| Forum | Gear talk |
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| Started by | izogi |
| On | 10 December 2013 |
| Replies | 18 |
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