Home > Instruments, Solar, and Multi-Function Watches >   Kestrel 3500 Pocket Weather Meter
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Description   The Kestrel 3500 measures every environmental condition simply with the press of a button!   Features 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 Know Your Conditions Measure environmental conditions quickly and accurately Forecast weather with pressure trend indicator Reliable, portable and easy to use Quality by Design All instruments and accessories are completely assembled in the USA Innovative humidity sensor designed for stability and accuracy in abrupt condition changes Thermally adjusted humidity sensor Patented user-replaceable impeller Quick response, external thermistor High precision pressure sensor Features Real-time clock Protective cover with sure-grip overmolding Data hold function Large easy-to-read display with backlight Waterproof and floats Lanyard and battery included Two-year warranty Display Update 1 second Display Size Reflective 3 1/2 digit LCD, 9 mm (0.36 in.) digit height Off-Axis Wind Speed Accuracy -1% @ 5º off-axis; -2% @ 10º; -3% @ 15º Calibration Drift < 2% after 100 hours use at 7 M/S (~14 KT, 25 KM/H, 16 MPH or 1,400 FPM) Environmental Sealing Electronics enclosure IP67 - water resistant to 1 m. (3 ft.) Shock Resistance Drop tested to 2 m. (6 ft.) Auto Shutdown 45 minutes after last key press Battery User-replaceable CR2032 coin cell; typical life, 400 hrs Impeller 25 mm (1 in.) diameter, sapphire bearings, light weight; user-replaceable without tools Temperature Sensor Hermetically sealed precision thermistor Pressure Sensor Monolithic Silicon Piezoreisitive sensor Dimensions unit: 122 x 42 x 20 mm (4.8 x 1.7 x 0.8 in.) cover: 122 x 46 x 26 mm (4.6 x 1.8 x 1.1 in.) Weight unit: 2.3oz (65gr) cover: 1.3oz (37gr) Operating Temperature LCD readability is lost above 50ºC (122ºF) and below -15ºC (5ºF). Accurate readings may be taken beyond these temperature limits by exposing the unit for the minimum time necessary to take and record measurement. Storage Temperature Recommended -20ºC to 80ºC (-4ºF to 176ºF) Temperature Limitations The Kestrel temperature sensor is able to measure temperatures as low as -30C (-22F) and as high as 70C (158F). The Kestrel is able to display wind chill measurements lower than -30C, depending on wind conditions. It is also able to display heat index measurements above 70C, depending on humidity conditions. The Kestrel display will not function if the display itself gets below -15C. However, if the unit is kept in a pack or pocket or other warm area, the display itself should not get this cold. Patents 5,783,753; 5,939,645; Other patents pending. Certification Wind speed, temperature and humidity measurements are tested at the factory before packaging. Factory certification is available for additional fee. Product is CE certified. Warranty Standard 2-year warranty covers parts and labor.

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