Kestrel Instruments 4500NVTAN 845NV Pocket Weather Tracker Night Vision Desert Tan with Free UPS, Carry Case

Item #: NK-845NVTAN

Each Kestrel instrument is individually calibrated, tested and certified against standards traceable to the National Institute of Standards and Testing... [Read More]

Our Price: $309.00

Each Kestrel instrument is individually calibrated, tested and certified against standards traceable to the National Institute of Standards and Testing (NIST).

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For years our customers have been asking for wind direction along with wind speed. New for 2007, the Kestrel 4500 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 2000 data point memory.

Pair the 4500 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.

*offer valid for this product only and can not be applied to other products.

Features
	Digital compass provides direction and stores data with wind speed

	Automatic Crosswind calculator

	Headwind/Tailwind speeds

	Current, Maximum and Average Wind Speeds

	Air, Water & Snow Temperature

	Wind Chill

	Relative Humidity

	Dewpoint

	Heat Stress Index

	Barometric Pressure

	Altitude Please go to barometer and altitude help for more information.

	Density Altitude

	Wet Bulb Temperature

	Graph and recall trends

	Easy to read, backlit display

	Time and date

	Customize screens to display user-selected measurements

	Flip-top impeller cover allows use of other functions while protecting the impeller (hard cases available.)

	Automatically store measurements, even when the unit is turned off

	Manually store measurements with the press of a button

	Chart up to 2,000 measurements

	Impeller can be replaced without tools

	Exterior temperature, humidity, and pressure sensors for fast and accurate readings

	Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit.

	Includes neck and wrist lanyard, protective pouch and 2 AAA batteries

	Waterproof and floats.

	Standard 5-year warranty covers parts and labor

	Assembled in the USA

	US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074

Manual available online...

Due to overwhelming demand from our military customers, the Kestrel NV line was added in 2005. These models have the same features as their more colorful counterparts, but are olive drab with a visible red backlight, which helps sustain the user's natural night vision. Military personnel and pilots flying in darkness are often concerned with preserving their night vision. 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. The units' red backlight is also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations.