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Kestrel 4000NV Pocket Weather Tracker with Night Vision at $259.00 with FREE shipping, is the next generation of weather monitoring! You can now measure EVERY major environmental condition, easily and accurately, right in the palm of your hand. The chart mode allows users to recall and graph up to 2000 measurements, along with the date and time of storage. Barometric Pressure, Altitude, Density Altitude, Temperature, Humidity, Wind Speed, Wind Chill, Dew Point, Wet Bulb, and Heat Index all in one pocket sized instrument.
This unit 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 grayish 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 4000NV Measures:
- Heading (true & magnetic)
- Wind direction
- Crosswind
- Headwind/tailwind
- Altitude
- Pressure trend
- Barometric pressure
- Relative humidity
- Heat stress index
- Dewpoint
- Wet bulb temperature
- Density altitude
- Wind chill
- Air, water, & snow temperature
- Current, average, and maximum wind gust
- Customizable 1400 Data Point Storage
- Data upload (with optional interface)
Features:
- Wind speed units: m/s, km/h, mph, fpm, kts, Beaufort
- Wind speed accuracy: +/- 3% of reading
- Wind speed range: 0.8 to 135 mph, 0.4 to 60.0 m/s
- Temperature units: Fahrenheit or Celsius degrees
- Temperature accuracy: +/- 1.0 degrees Celsius, +/- 1.8 degrees Fahrenheit
- Temperature range: -45.0 to 125.0 degrees Celsius, -50.0 to 260.0 degrees Fahrenheit
- Reletive humidity units: %
- Reletive humidity accuracy: +/- 3% rh
- Reletive humidity range: 0.0 to 100% rh
- Barometric pressure units: hPa, inHg
- Barometric pressure accuracy: +/- 1.5 hPa, +/- 0.05 inHg
- Barometric pressure range: 10.0 to 1100.0 hPa, 0.3 to 32.5 inHg
- Altitude units: m, ft
- Altitude accuracy: +/- 15 m / 50 ft
- Altitude range: -2000 to 9000 m, -6000 to 30,000 ft
- Waterproof and floats
- Time and date
- Easy-to-read, Red backlit display
- Exterior temperature, humidity, and pressure sensors for fast and accurate readings
- Minimum, maximum, and average values
- Automatically store measurements, even when the unit is turned off
- Manually store measurements with the press of a button
- Customizable data storage - 2000 data points
- Graph and recall trends
- Customize screens to display user-selected measurements
- Data charting
- Data upload (with optional interface)
- Five languages (English, French, Spanish, German, and Italian)
- Impeller is shock-mounted in a glass-reinforced plastic housing
- 5 year manufacturer’s warranty
Box Contents:
- Soft carry pouch
- Wrist and neck lanyards
- Five Year Warranty
- 2 AAA batteries with average life of 400 hours
- Kestrel Certificate of Conformity
- User Manual
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