Kestrel 4500 NV
Kestrel 4500NV
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. .
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 chill
- Air, water, and snow temperature °F or °C
- Current, average, and maximum air velocity
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 (hard cases available)
- Data charting
- Upload to a computer (with optional interface)
- Five languages (English, French, Spanish, German, and Italian)
- 2-year warranty
- Assembled in the USA
Includes:
- Soft carry pouch
- Wrist and neck lanyards
- Batteries - 2 AAA
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