4000nv Pocket Weather Meter Olive Drab - Night Vision
SKU: KEST0840NV Part Number: 0840NV Barcode: 730650040049
Product Information
The Kestrel Tracker 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.
Note: 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 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.
Durable? You bet. The 4000 has been subjected to impact, water submersion and extreme temperature tests, and keeps on working. Kestrel 4000 s have been put to the test in some of the harshest conditions on the planet. U.S. Special Forces, combat weather teams, wildland firefighters, smoke jumpers, Mt. Everest expeditions and IRL pit crews are just a few who rely on a Kestrel 4000 to provide them with the crucial environmental data they need. Watch the Weather Channel during a hurricane, and you re sure to spot a Kestrel 4000 being wielded by an intrepid on-screen meteorologist.
Note: 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 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.
Durable? You bet. The 4000 has been subjected to impact, water submersion and extreme temperature tests, and keeps on working. Kestrel 4000 s have been put to the test in some of the harshest conditions on the planet. U.S. Special Forces, combat weather teams, wildland firefighters, smoke jumpers, Mt. Everest expeditions and IRL pit crews are just a few who rely on a Kestrel 4000 to provide them with the crucial environmental data they need. Watch the Weather Channel during a hurricane, and you re sure to spot a Kestrel 4000 being wielded by an intrepid on-screen meteorologist.
Product Features
- 5-year warranty Kestrel 4000 Includes * Soft carry pouch
- Air, water, and snow temperature
- All instruments and accessories are completely assembled in the USA
- Altitude
- Automatically store measurements, even when the unit is turned off
- Average wind speed
- Batteries - 2 AAA BRAND NEW
- Current wind speed
- Customizable data storage - 2000 data points
- Customize screens to display user-selected measurements
- Data charting
- Data upload (with optional interface)
- Density altitude
- Dewpoint
- Easy to read, backlit display
- Exterior temperature, humidity, and pressure sensors for fast and accurate readings
- Five languages (English, French, Spanish, German, and Italian)
- Flip-top impeller cover allows use of other functions while protecting the impeller
- Graph and recall trends
- Heat stress index
- Humidity sensor can be recalibrated in the field with the Relative Humidity Calibration Kit (sold separately).
- Manually store measurements with the press of a button
- Maximum wind gust Kestrel 4000 Features * Waterproof and floats
- Minimum, maximum, and average values
- Pressure trend
- Relative humidity
- Time and date
- US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074
- User-replaceable impeller
- Wet bulb temperature
- Wind chill
- Wrist and neck lanyards
Product Specifications
- Brand
- Kestrel Weather
- SKU
- KEST0840NV
- MPN
- 0840NV
- UPC
- 730650040049
- Ship Dimension
- 3 x 2 x 5.3 inches
- Ship Weight
- 0.4lbs.