Kestrel 3000 Manual

Kestrel
NK
Pocket Weather
Wind Speed, Temperature, Wind Chill, Relative Humidity,
Heat Index and Dewpoint

OPERATION

1) Slide off Cover.
3) Select Operating Mode: Press and release [MODE] to change the operating
mode. You can select a different operating mode at any time.
Current Wind Maximum 3-
Second Gust
Speed
Since Power On
Wind Chill
4) Select Measurement Scale: Hold down [ON] while pressing [MODE] to
change the measurement scale. You can select a different scale at any time.
B KT
Beaufort Knots
Force
***NOTE***
Select temperature or
wind chill mode to
change degrees.
5) Measure wind speed, max and average: Simply point the unit into the
air flow you wish to measure.
Measure temperature, wind chill, humidity and dew point: The Kestrel's
humidity and temperature sensors are located in the openings below the
impeller. Because they are external to the case, you can take fast and accurate
measurements by simply waving the unit rapidly back and forth OR holding
it into an air flow of at least 1 M/S [2 KT, 4 KM/H, 2 MPH or 197 FPM] and
reading the display immediately. (The air
flow ensures that the temperature sensor
measures the temperature of the air, not the
case.) Alternatively, you can take accurate
readings with no air flow by allowing the
case to reach the same temperature as the
surrounding air. (If the case is much warmer
or cooler than the air, this can take up to 30
minutes.)
®
3000
Meter
™
2) Turn On: Press [ON] to turn on unit.
MAX AVG
Average Wind
Speed Since
Temperature
Power On
Heat Index Dewpoint
Relative
Humidity
M/S KM/H MPH
Meters per Kilometers Miles per
Second per Hour Hour
°C °F
Degrees Degrees
Centrigrade Fahrenheit
Wind Speed Functions
Operating Modes: Moving 3-second average (
since power on (MAX) and average since power on (AVG).
Scales: Knots (KT), meters per second (M/S), kilometers per hour (KM/H), miles per
hour (MPH), feet per minute (FPM) and Beaufort (B).
On-axis Accuracy: greater of ± 3% or ± least significant digit.
Off-axis Response: -1% @ 5°, -2% @ 10°, -3% @ 15°.
Calibration Drift: < 2% after 100 hours use at 7 M/S [~14 KT, 25 KM/H, 16 MPH or
1400 FPM].
Minimum Speed: 0.3 M/S [~0.6 KT, 1.0 KM/H, 0.7 MPH or 59.0 FPM].
Maximum Speed: 40 M/S [~78 KT, 144 KM/H, 89 MPH or 7877 FPM].
Temperature and Humidity Functions
Operating Modes: Temperature ( ); wind chill (
heat index (
Scales: Centigrade (°C), Fahrenheit (°F), percent ( ).
Accuracy: Temperature and wind chill, ± 1.0°C; relative humidity ± 3%, dew
point temperature ± 2°C and heat index, ± 3°C (between 5% and 95% RH).
Minimum Temperature: -29°C [-20°F].
Maximum Temperature: 70°C [158°F].
Humidity Sensor Response Time: 1 minute.
Humidity Sensor Calibration: May be field or factory calibrated.
Display
Air
Type: Reflective 3½ digit LCD.
Digit Height: 9 mm. [0.36 in.].
Update: 1 second.
Range and Resolution: Depends on
measurement scale selected – see chart:
Temperature Limitations: Normal
operation from -15°C to 60°C [-4°F to 140°F]. Below -15°C [-4°F], accurate readings
may be taken by keeping the unit warmer than -15°C [4°F] and exposing it for
the minimum time necessary to take a reading (less than one minute).
Auto Shutdown: After 30 minutes of no button presses.
Environmental
Sealing: Electronics enclosure IP67 – water resistant to 1 m. [3 ft.]. Floats.
Shock: Drop tested to 2 m. [6 ft.].
FPM
Storage Temperature: -40°C to 60°C [-40°F to 140°F].
Feet per
Minute
Physical
(x10)
Buttons: Two sealed tactile rubber buttons control all functions.
Battery: User-replaceable CR2032 coin cell. Typical life, 250 hours (25,000+ readings).
Impeller: 25 mm. [1 in.] diameter, sapphire bearings, light weight. User-replaceable
impeller/housing assembly.
Temperature Sensor: Hermetically sealed precision thermistor.
Humidity Sensor: Solid state silicone capacitance sensor.
Case: Slip-on case prevents damage to display and moving parts.
Dimensions: 122 x 42 x 14 mm. [4.8 x 1.7 x 0.6 in.]; case, 117 x 46 x 19 mm. [4.6 x 1.8
x 0.7 in.]; lanyard, 0.5 m. [10 in.].
Weight: Unit, 43 g. [1.5 oz.]; case, 23 g. [0.8 oz.].
The Kestrel turns itself off automatically
after 30 minutes of no button presses.

SPECIFICATIONS

), maximum 3-second gust
); relative humidity (
); dewpoint temperature ( ).
Scale
KT, M/S, KM/H
MPH, °C & °F
FPM
2,000-19,990
%
);
Range Resolution
0.0-199.9 0.1
0-1,999 1
10
0-100 1