Kestrel 4500 Pocket Wind Meter
Description :
For years our customers have been asking for wind direction along with wind speed . New for 2007, the Kestrel 4500 Pocket-Wind-Meter does just that with its built in digital compass. But it doesn' t stop there. It also calculates crosswind and headwind/ tailwind with reference to a user-set target heading, and stores the information along with all the other environmental readings in its 1400 data point memory.
Pair the Kestrel 4500 Pocket-Wind-Meter with the Kestrel Vane Mount and you have a data-logging weather station that sets up in seconds and rotates in the slightest of breezes. Did we mention that the whole kit is the ultimate in portability? It packs down into a 2 x 6 inch pouch and weighs under 8 ounces.
Available in the NV Configuration
Military personnel and pilots flying in darkness are often concerned with preserving their night vision. Due to overwhelming demand from our military customers, the Kestrel NV line was added in 2005.
The Kestrel 4500NV has a night-vision preserving backlight which helps users to sustain natural night vision. The NV' s backlight incorporates an optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. Additionally, NV backlights are also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations. This backlight appears soft greyish pink, not red, and is still in the visible spectrum, so is not compatible with night-vision equipment.
It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. Even a short burst of white, yellow, green or blue light “ bleaches out” the rod cell photoreceptors in the eye and causes night blindness until the entire adaptation process can take place again. Light in the red spectrum does not cause this “ bleaching out” , preventing night blindness and night vision fatigue.
Kestrel 4500 Measures :
Heading ( true & magnetic)
Wind direction
Crosswind
Headwind/ tailwind
Altitude
Pressure trend
Barometric pressure
Wet bulb temperature
Relative humidity in %
Heat stress index
Dewpoint
Wet bulb temperature
Density altitude
Wind chil l
Air , water , and snow temperature ° F or ° C
Current, average, and maximum air velocity
Kestrel 4500 Features
Waterproof and floats
Time and date
Easy- to-read backlit display
Data Logger ( automatic and manual)
Customizable data storage - 1400 data points
Minimum, Maximum and Average values
Multi-Function 3-line display
Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit.
Exterior temperature, humidity, and pressure sensors for fast and accurate readings
Customize screens to display user-selected measurements
Graph and recall trends
User-replaceable impeller
Flip-top impeller cover allows use of other functions while protecting the impeller
Data charting
Upload to a computer ( with optional interface)
Five languages ( English, French, Spanish, German, and Italian)
US Patent Nos. 5, 783, 753 and 5, 939, 645 and 6, 257, 074
Assembled in the USA
Kestrel 4500 Includes
Soft carry pouch
Neck lanyard
Batteries - 2 AAA
Kestrel Certificate of Conformity
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