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Knowing the wind speed is not only useful - it's informative and it's fun. The Vortex Pole Mount Anemometer is an inexpensive way to provide you with accurate wind speed in places where AC power may not be available.
Mount the head and rotor to your own pole or roof bracket, bring the wire in through a window or some other hole, and stick the display on the glass, a window, or anywhere you want. |
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| SENSOR TYPE | Anemometer utilizes a 3-Cup rotor. Reed switch/magnet provide 1 pulse per rotation. |
| ROTOR DIAMETER | approx. 6 in (150 mm) |
| SPEED RANGE | approx. 3 mph to 125+ mph (~5 kph to over 200 kph) |
| MOUNTING BRACKET | Supplied with an aluminum mounting bracket with 2 holes for screws. Designed to be mounted on top of a pole or bracket. Custom brackets available up request (offset, for example) |
| WIRE | Standard length is 25 feet (8m) Custom lengths available upon request - tested OK to over 1,500 feet The wire is provided stripped and unterminated |
| DISPLAY | LCD Digital Display on the anemometer is a Sigma Sport Model BC-1200 bicycle computer. |
| POWER | CR2032 Coin Battery located in the display - not the rotor/head Battery life 1 to 3 years of intermittent, occasional use. A few months to a year of continuous use, depending on wind conditions and mode of use (Display goes to low power mode when the wind speed drops to zero, or if removed from the bracket when not in use) |
| SPEED RESOLUTION | Top Anemometer Display (Current Speed): 0.5 mph Bottom Anemometer Display (Max, Average, etc.): 0.01 mph |
| DIGIT SIZE | Top Display (Current Speed): 10mm (approx. 1/2") Bottom Display (Max, Average, etc.): 5mm (approx. 1/4") |
| UPDATE RATE | Approximately 1Hz (1 second) |
| ACCURACY | 0.5 mph from 4 to 10 mph +/-4% from 10 to 50 mph estimated within 4% above 50 mph |
A further note on accuracy
Maximum Speed Minimum Speed Accuracy: The Vortex™ anemometer is NOT sensitive to how it is held in the wind, provided the head is held horizontal and the air flow is not obstructed by the user (i.e. you do not have to face into the wind). |
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IMPORTANT NOTE ABOUT AVERAGE WIND SPEED: WORKAROUND : if you want to know the real average wind speed - even with spells near zero, do the following: reset the computer, note the time. When desired, simply divide the total number of wind "miles" on the display by the number of hours since reset. |
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 ...and monitoring the wind from an RV! |
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On a rooftop in New Zealand.... |
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 Mount the anemometer on your boat... |
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 Here is a Vortex anemometer watching the stars... |
 (those little specs are people) Speed skiing is all about going straight down hills like this, getting to over 100 mph at the bottom. FIS rules mandate cross-winds under 10 mph. Vortex anemometers were used at this FIS-sanctioned event in British Columbia March, 2005. |
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 This anemometer lives is a beautiful garden in Pensacola Florida |
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INSTRUCTIONS:
If the rotor on your Vortex Wind Meter looks like the photo above AND it has a Sigma Sport BC1200 display (silver square with ONE bar button on the top: Vortex BC1200 Pole Mount "D2 Rotor" Instructions. This applies to those purchased between May/June 2005 and beyond.
If your Vortex rotor looks like this: Vortex Pole Mount "M1 Rotor" Anemometer Instructions.
NOTE: Make sure to select the proper instructions; different rotor styles have different calibration numbers
Thank you!
Click here to view or download simplified instructions for the Sigma Sport BC1200 Computer.
1 year 100% warranty on any defective parts and/or any failure resulting from normal use.
And if you open the box and the anemometer is not what you wanted or expected, return it within 2 weeks in as-new condition for a 100% refund (sorry - not including shipping!).
Basically - our goal is to have your complete satisfaction.