Anemometer Kestrel 3000 is a pocket size electronic device used for measurement of wind speed, temperature, wind chill, dew point temperature, relative humidity, and heat stress index.
Equipped with an impeller for wind speed measurement and termistor sensor for air measurement temperature. The anemometer’s impeller of very light structure, has precise, sapphire bearings, what assures accurate wind measurement also with small air speed. In case of damage the impeller can be easily replaced by a user.
Combining of an anemometer and a thermometer allows calculation through a built in device microprocessor an additional parameter – wind chill. This parameter is useful i.e. in case, when staff is send to work in cool and windy days in the open field. The device, except from the current wind speed, allows on a maximum wind speed reading as well as an average in various units. The anemometer Kestrel 3000 has an easy to read LCD display where digits are 9 mm high. The result’s updating on the display is takes place every second (for humidity every minute).
The device is powered from a lithium battery (tablet ), which assures continuous work of the device through 400 hours. The device switches off automatically its power supply, if no key button is used for more than 30 minutes.
The anemometer’s casing is made out of plastic, and its electronic elements are fully protected from moisture. The device floats, if it is accidentally dropped into water.
The device is equipped with a hard case and a wrist or a neck lanyard (protecting the device from being dropped during exploitation).
The anemometer Kestrel 3000 was designed in such way, so it assures possibly easy and comfortable usage tylko with help of two key buttons: "ON" – a key button switching the power supply on and off and "MODE" – a key button choosing a type of displayed measurement result: air speeds (current, maximum or average) or temperature (current or wind chill). By pressing the key button "ON" and pressing "MODE" it is possible to obtain unit change, in which the results are displayed.
|MEASUREMENT OF AIR SPEED|
|Scope of measurement||0,3...40 m/s|
|Measurement uncertainty (for a component in a device axis)||+/- 3% of a reading or +/- 0,1 m/s|
|Underrating indications for wind tilted from a device’s axis||-1%||for 5° angle|
|-2%||for 10° angle|
|-3%||for 15° angle|
|Calibration drift||<2%||after 100 hours of work
at 7 m/s speed
|Measurement resolution||0,1||kt, m/s, km/h, mph|
|1||FPM||up to 1999 FPM|
|10||FPM||for 2000 FPM|
|Speed measurement result
||current||average from the last 3 seconds|
|average||an average from the moment of switching on the power supply|
|maximum|| 3-second wind gusts
from the moment of switching on the power supply
|Choice of result units||kt (knots), m/s, km/h, mph (miles per hour), FPM
(foot per minute), Beaufort degrees
|AIR TEMPERATURE MEASUREMENT|
|Scope of measurement||-15...+50 °C|
||+/- 1 °C|
|Measurement resolution||0,1 °C|
|Temperature measurement result reading||current|
|Choice of result units||degrees C, F|
|Measurement uncertainty||+/- 3 %|
|Scope of measurement||0,1 %|
|Calibration drift||+/- 2 %||after 24 months|
|Response time||1 min.|
|Degree of casing protection||IP67 (waterproof with immersion up to 1 m in depth), floats on the water|
|Mechanical resistance||resistant to fall from height of up to 2 m|
|Scope of work temperatures||-15...+50 °C|
|Scope of storage temperatures||-20...+80 °C|
|Battery||lithium, type CR2032|
|Battery work time||400 hours|
|Automatic power supply switch off||after 30 minutes|
|Overall outside measurements||122 x 42 x 14 mm|
|Overall case dimensions||117 x 46 x 19 mm|
|Weight (along with a case)||67 g|
|Impeller diameter||25 mm|