KESTREL 4000 POCKET WEATHER TRACKER 

Kestrel 4000 Pocket Weather Tracker

Product Code: Kestrel084X Price: Check Latest 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 250 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. FEATURES 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 250 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 lanyards, protective pouch and 2 AAA batteries Waterproof and floats. 2-year warranty Assembled in the USA US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074 Features and Specifications Wind Speed   Accuracy ±3% Response Time 1 second Calibration Drift <2% after 100 hours use at 7m/s Units Display Resolution Range Knots KTS 0.1 0.6 to 78 Meters per Second M/S 0.1 0.3 to 40 Kilometers per Hour KM/H 0.1 1.0 to 144 Miles per Hour MPH 0.1 0.7 to 89 Feet per Minute FPM 1 59 to 7877 Beaufort Force BEAU 1 1 to 16   Temperature   Accuracy Temperature ±1°C Wind Chill ±1°C Dew Point ±2°C Heat Index ±3°C Response Time approximately 1 minute for most conditions Units Display Resolution Range Celsius °C 0.1 -29 to 70 Fahrenheit °F 0.1 -20 to 158   Relative Humidity   Accuracy ±3% Response Time approximately 1 minute for most conditions Calibration Drift ±2% over 24 months (can be field calibrated) Units Display Resolution Range Percent % 0.1 5 to 95%   Barometric Pressure   Accuracy ±3hPa (between -10°C and 60°C) Calibration Drift ±1hPa over 12 months (can be field calibrated) Units Display Resolution Range (Station Pressure) hectoPascal (mb) hPa 0.1 300.0 to 1100.0 Inches Mercury inHg 0.01 8.86 to 32.48   Altitude, Density Altitude   Units Display Resolution Range Meters M 1 -500 to 9000 Feet FT 3 -1600 to 30000 Please go to barometer and altitude help for more information.   Display   Update 1 second Temperature Range Normal operation from -20°C to 60°C [-4°F to 140°F]. Below -20°C [-4°F], accurate readings may be taken by keeping the unit warmer than -20°C [-4°F] and exposing it for the minimum time necessary to take a reading (less than 1 minute). Storage Temperature -30°C to 60°C [-22°F to 140°F]. Auto Shutdown After 15 minutes of no button presses. (This feature can be disabled.)   Physical   Battery Two AAA alkaline batteries (included). Typical life, 400 hours. Impeller 25 mm. [1in.] diameter, sapphire bearings, light weight. User-replaceable impeller/housing assembly. Temperature Sensor Hermetically sealed precision thermistor. Humidity Sensor Solid state silicon capacitive sensor. Pressure Sensor Monolithic silicon piezoresistive sensor. Dimensions 12.7 x 4.5 x 2.8 cm. [5 x 1.8 x 1.1 in.] Weight 102 g. [3.6 oz.] Warranty Standard 2-year covers parts and labor. *Specifications are are subject to change.