Kestrel 3500 Pocket Weather Meter


Providing a wealth of weather information, the Kestrel 3500 measures barometric pressure, altitude, temperature, humidity, wind speed, wind chill, dew point, wet bulb, and heat index. Measure current, maximum, and average wind speed in meters per second, kilometers per hour, miles per hour, feet per minute, knots, or Beaufort Force. Temperature, wind chill, heat stress, and dew point are shown in degree C or degree F. Relative humidity is displayed as a percentage. Pressure is measured in hPa or inHg. Altitude is displayed in feet or meters. Measurements are shown on a large backlit display. An innovative thermally-adjusted humidity sensor provides stable, accurate measurements even during abrupt condition changes. Other features include a real-time clock, hold function, quick response external thermistor, a high precision pressure sensor, and a user-replaceable impeller. Housed in a waterproof body that floats, the meter features a protective cover with sure-grip overmolding. Lanyard and battery included. Accurate readings may be taken beyond these temperature limits by exposing the unit for the minimum time necessary to take and record measurements. Specifications: Minimum wind speed: 0.7 mph (0.6 knots, 1 km/h, 0.3 m/s, or 59 fpm). Maximum wind speed: 89 mph (78 knots, 144 km/h, 40 m/s, or 7,877 fpm). Wind speed accuracy: +/-3 percent. Update: 1 second. Temperature, wind chill, heat stress, and dew point range: -20 degree F to +158 degree F (-29 degree C to +70 degree C). Temperature, wind chill, heat stress, and dew point accuracy: +/- 2 degree F (+/-1 degree C). Temperature resolution: +/- 0.1 degree F (+/-0.1 degree C). Wind chill factor resolution: +/-1 degree C. Relative humidity range: 5 percent to 95 percent. Relative humidity accuracy: +/- 3 percent from 5 percent to 95 percent. Barometric pressure range: 870.0 hPa to 1,080.0 hPa (25.70 inHg to 31.90 inHg). Barometric pressure accuracy: ±3hPa. Altitude range: -1,500 ft. to 30,000 ft. (-500 m to 9,000 m). Altitude accuracy: ±30 meters (at standard atmospheric conditions). Operating temperature: 5 degree F to +122 degree F (-15 degree C to +50 degree C). Storage temperature range: -4 degree F to +176 degree F (-20 degree C to +80 degree C). Impeller: 1 Inch diameter, sapphire bearings, lightweight. Temperature sensor: hermetically sealed precision thermistor. Humidity sensor: solid state silicon capacitive sensor. Pressure sensor: monolithic silicon piezoreisitive sensor. Display: reflective 3-1/2 digit backlit LCD. Sealing: electronics enclosure IP67 water resistant to 3 ft. Floats. Battery: user-replaceable CR2032 coin cell battery with a typical life of 400 hours.