Kestrel 1000 Manual

Kestrel
Pocket Wind
NK
Current, Maximum and Average Wind Speed
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 Speed
4) Select Measurement Scale: Hold down [ON] while pressing [MODE] to
change the measurement scale. You can select a different scale at any time.
KT M/S
Knots Meters
per
Second
5) Take a Measurement: Simply point
the unit into the air flow you wish to
measure.
The Kestrel turns itself off
automatically after 30 minutes
of no button presses.
® 1000
™ Meter
2) Turn On: Press [ON] to turn on unit.
MAX AV
Maximum Average Wind
3-Second Speed Since
Gust Since Power On
Power On
KM/H MPH FPM
Kilometers Miles per Feet per
per Hour Hour Minute
(x10)
Wind Speed Functions
Modes: Moving 3-second average (
on (MAX) and average since power on (AVG).
Units: Knots (KT), meters per second (M/S), kilometers per hour (KM/H), miles per
hour (MPH), feet per minute (FPM) and Beaufort force (".F").
On-Axis Accuracy: greater of ± 3% of reading or ± least significant digit.
Off-Axis Response: -1% @ 5°, -2% @ 10°, -3% @ 15°.
Accuracy Degradation: (loss of accuracy due to impeller bearing wear) < 2%
after 100 hours use at 7 M/S [14 KT, 25 KM/H, 16 MPH, 1400 FPM].
Minimum Speed: 0.3 M/S [0.6 KT, 1.0 KM/H, 0.7 MPH, 59.0 FPM].
Maximum Speed: 40 M/S [78 KT, 144 KM/H, 89 MPH]; 1,990 FPM (display limit).
Display
Type: Reflective 2 ½ digit LCD.
Digit Height: 10 mm (0.4 in.).
Update: 1 second.
Range and Resolution: Depends on measurement scale selected – see chart:
Display 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).
Automatic 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.].
Storage Temperature: Prolonged exposure to temperatures below -20°C [-4°F]
or above 80°C [176°F] may cause permanent damage.
Physical
Buttons: Two sealed tactile rubber buttons control all functions.
Battery: User-replaceable CR2032 coin cell. Typical life, 400 hrs.
.F
Impeller: 25 mm [1 in] diameter, sapphire bearings, light weight. User-replaceable
impeller/housing assembly.
Beaufort
Force
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.]; slip-on case, 23 g. [0.8 oz.].
SPECIFICATIONS
), maximum 3-second gust since power
Scale Range Resolution
KT, M/S, KM/H 0.0-19.9 0.1
MPH, °C & °F 20-199 1
FPM 0-1,990 10