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CLARK
Kestrel 3000 Wind Meter Velocity,Temperature, Humidity, Wind Chill, Dew Point DESCRIPTION The Kestrel 3000 is a unique hand-held instrument for measuring wind speed, temperature, wind chill, relative humidity, heat stress index and dew point temperature. Pocketsized and easy-to-use, it allows you to take fast, accurate readings of the environmental conditions whenever and wherever you are. It can track maximum and average wind speeds along with current readings, and displays wind speed in your choice of knots, meters per second, kilometers per hour, miles per hour, feet per minute and Beaufort force. Temperature, wind chill, heat index and dew point temperature can be displayed in °C or °F. Relative humidity is expressed as a percentage. Measuring modes and display units can be changed at any time and all functions are controlled with only three buttons. The large liquid crystal display is easy to read, even in low light. The Kestrel 3000 measures wind speed with a large-diameter precision ultra-light impeller, which turns on sapphire bearings, providing excellent accuracy (± 3%), and the ability to measure the slightest breeze (0.3 M/S). The impeller and protective housing pop out without tools for easy and inexpensive replacement, ensuring that the Kestrel’s high accuracy can be maintained even if the impeller becomes damaged or worn. For temperature readings, the Kestrel uses an external thermistor for fast response and accuracy of ± 1.0°C. The capacitive humidity sensor is factory calibrated to ± 3% accuracy. Heat index measurements are accurate to ± 3% and dew point temperature to ± 2%. Wind chill, heat stress index and dew point temperature are automatically calculated using U.S. National Weather Service formulas. A hard slip-on case protects the Kestrel 3000 display, buttons and impeller from damage. The user-replaceable battery provides 300 hours of use. The Kestrel 3000 is covered by a full one-year warranty and is protected by US patent No. 5,753,784. Wind Speed
Environmental
Operating Modes: Moving 3-second average, maximum 3 second gust since power on (MAX) and average since power on (AVG). Display Update: 1 second. Units: Knots (KT), meters per second (M/S), kilometers per hour (KM/H), miles per hour (MPH), feet per minute (FPM) and Beaufort force (B). On-Axis Accuracy: greater of ± 3% or ± least significant digit.. Resolution and Range: KT, M/S, KM/H or MPH: resolution 0.1; max display range 199.9. FPM: resolution 1.0 below 1999, 10 above 2,000 (auto-ranging); display limit 19,990. Calibration Drift: < 2% after 100 hours use at 7 M/S Minimum Speed: 0.4 M/S [~0.6 KT, 1.3 KM/H, 0.8 MPH or 70 FPM]. Maximum Speed: 40 M/S [~77 KT, 143 KM / H, 89 M P H,7,832 F P M].
Sealing: Electronics enclosure IP67 – water resistant to 1 m. [3 ft.]. Floats. Shock: Drop tested to 2 m. [6 ft.]. Operating Temperature: LCD readability is lost above 50°C [122°F] and below -15°C [5°F]. 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 -20°C to 80°C [-4°F to 176°F].
Temperature, Wind Chill, Humidity, Heat Index and Dew Point Operating Modes: Temperature ; wind chill; relative humidity; heat stress index ; dew point temperature . Units: Degrees Centigrade (°C) and degrees Fahrenheit (°F). Accuracy: Temperature, ± 1.0°C; wind chill, ± 2.0°C; relative humidity ± 3%; dew point temperature, ± 2°C; heat index, ± 2°C. Temperature/Wind Chill Display Update: 1 second. Humidity Sensor Response Time: 1 minute. Resolution: 0.1.
ORDERING INFORMATION Model Kestrel 3000 Impeller
Description Portable Anemometer/Thermometer Replacement Impeller
E. Clark & Associates
10 Brent Drive
Physical Buttons: Three sealed tactile rubber buttons control all functions. Auto Shutdown: 45 minutes after last key press. Battery: User-replaceable CR2032 coin cell. Typical life, 300 hrs. Impeller: 25 mm. [1 in.] diameter, sapphire bearings, light weight. User-replaceable without tools. Temperature Sensor: Hermetically sealed precision thermistor. Humidity Sensor: Polymer capacitive sensor. Display: Reflective 4 digit LCD, 9 mm [0.36 in.] digit height. Case: Slip-on hard case. Dimensions: 122 x 42 x 18 mm. [4.8 x 1.7 x 0.7 in.]; case, 122 x 48 x 28 mm. [4.8 x 1.9 x 1.1 in.]; lan yard, 0.5 m. [18 in.]. Weight: Unit, 65 g. [2.3 oz.]; case, 37 g. [1.3 oz.].
Hudson, MA 01749
Tel. 978 / 568 3400
Fax 978 / 568 0060
