Kestrel 3500NV Pocket wind meter with Night Vision support
by Nielsen Kellerman (3500NV)
Like the standard Kestrel 3500, the Kestrel 3500NV measures every environmental condition simply with the press of a button!
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The Kestrel 3500NV 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 3500NV Measures...
Current Wind Speed
Maximum Wind Gust
Average Wind Speed
Air, Water & Snow Temperature
Wind Chill
Relative Humidity
Dewpoint
Heat Stress Index
Barometric Pressure
Altitude
Wet Bulb Temperature
Kestrel 3500NV Features...
Real-time clock
Protective cover with sure-grip overmolding
Data hold function
Large easy-to-read display with backlight
Waterproof and floats
Innovative design for stability and accuracy in abrupt condition changes
Patented user-replaceable impeller
Quick response, external thermistor
High precision pressure sensor
Reliable, portable and easy to use
The Kestrel 3500NV Includes...
A slip-on protective cover
Neck lanyard
CR2032 coin cell battery (Average life 300 hours)
Kestrel Certificate of Conformity
Kestrel Reliability and Quality is Now Backed by a 5-Year Warranty!
