Kestrel 3500NV Weather Meter/Digital Psychrometer + NV Backlight Kestrel

Many Kestrel users need to know everything that the weather is doing, but don’t need to log the data. At the press of a button, get all the relevant conditions you need to enable yourself to shift strategies, reduce risk and ensure safety. While the weather can dictate the comfort level of individuals working or playing outside, it plays an even bigger part in many professionals’ jobs. Irrigation professionals use the Kestrel 3500 to ensure they are irrigating efficiently and the water they are dispersing is actually hitting their intended target, and not evaporating or blowing away. On construction sites, Kestrel users are preventing plastic shrinkage cracks and curing concrete more effectively with their Kestrel 3500.

The Kestrel 3500 in Olive Drab with NV has a night-vision preserving backlight that 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 standard backlights, making them 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
● Average wind speed
● Maximum wind gust
● Barometric pressure
● Pressure trend
● Relative humidity
● Heat stress index
● Wet bulb temperature
● Dewpoint & Altitude
● Air, water, and snow temperature

KESTREL 3500NV FEATURES

● Real-time clock
● Waterproof and floats
● Large easy-to-read display with backlight
● Data hold function
● High precision pressure sensor
● Quick response, external thermistor
● Forecast weather with pressure trend indicator
● Patented user-replaceable impeller
● Reliable, portable, and easy to use
● Protective cover with sure-grip overmolding
● Designed and built in the USA