Shown
at right is the Kestrel 3000 with
cover and an optional extra removable impeller
Features and
Specifications:
Operating Modes: Moving
3-second average (), maximum 3-second gust since
power on (MAX) or 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.
Off-Axis Response:
-1% @ 5º, -2% @ 10º, -3% @ 15º.
Resolution and Range:
KT, M/S, KM/H or MPH:
resolution 0.1; max display range 199.9.
FPM: resolution
1.0 below 1,999, 10 above 2,000(auto-ranging);
max display range 19,990.
Calibration Drift:
< 2% after 100 hours use at 7 M/S (~14 KT, 25
KM/H, 16 MPH or 1,400 FPM).
Minimum - Maximum
Speed: 0.3 M/S (~0.6 KT, 1 KM/H,
0.7 MPH or 60 FPM) to 40 M/S (~78 KT, 144 KM/H,
89 MPH or 7,830 FPM).
Operating Modes: Temperature;
wind chill; relative humidity; heat index; dew
point temperature.
Units: Degrees
Centigrade (ºC) or degrees Fahrenheit (ºF).
Accuracy: Temperature
and wind chill, +/- 1.0ºC; relative humidity +/-
3%; dew point temperature, +/-2ºC; heat index,
+/-3ºC. Humidity sensor can be recalibrated in
the field.
Temperature/Wind Chill
Display Update: 1 second.
Humidity Sensor
Response Time: 1 minute.
Resolution:
0.1.
Environmental 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 50ºC (122ºF) and below -15ºC (5ºF).
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 -20ºC to
80ºC (-4ºF to 176ºF).
Physical Buttons: Two
sealed tactile rubber buttons control all
functions.
Auto Shutdown: 30
minutes after last key press.
Battery: User-replaceable
CR2032 coin cell. Typical life, 400 hrs.
Impeller: 25
mm (1 in.) diameter, sapphire bearings, light
weight. User-replaceable without tools.
Temperature Sensor:
Hermetically sealed
precision thermistor.
Humidity Sensor: Silicon
based capacitive sensor.
Display: Reflective
3 1/2 digit LCD, 9 mm (0.36 in.) digit height.
Case: Slip-on
hard case.
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,
44 g. (1.6 oz.); case, 23 g. (0.8 oz.).
Temperature
Limitations:
The Kestrel temperature sensor is able to measure
temperatures as low as -30C (-22F) and as high as
70C (158F). The sensor and electronics simply
won't measure beyond this range. The Kestrel is
able to display wind chill measurements lower
than -30C, depending on wind conditions. It is
also able to display heat index measurements
above 70C, depending on humidity conditions.
Furthermore, the Kestrel display will not
function if the display itself gets below -15C.
However, if the unit is kept in a pack or pocket
or other warm area, the display itself should not
get this cold. In other words, try not to leave
the Kestrel outside in temperatures below -15C.
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The
Kestrel 3000 is the ONLY hand-held instrument for
measuring wind speed, temperature, wind chill,
relative humidity, heat index and dew point
temperature.