The Kestrel 2500 measures; Current Wind Speed, Maximum Wind Gust and Average Wind Speed all in knots, m/s, km/h, mph, ft/min and beaufort scales. It will also display; Air, Water & Snow Temperature, Wind Chill, Barometric Pressure and Altitude.
Supplied with a hard cover, lanyard and battery.
|
Specifications
|
| Measurement |
Units
of Measure |
Accuracy |
Range |
| Current,
Max and Avg Wind Speed |
m/s,
km/hr, mph, fpm, kts, Beaufort Force |
±3%
of reading
or ±0.1 m/s |
0.3
to 40 m/s
(0.7 to 89 mph) |
| Temperature,
Wind Chill, Heat Stress, Dewpoint |
°C,
°F |
±1°C
(±2°F) |
-29
to 70°C
(-20 to 158°F) |
| Pressure |
hPa,
inHg |
±
3 hPa |
870.0 to 1080.0
hPa
(25.70 to
31.90 inHg)
|
| Altitude |
feet,
meters |
±
30 meters (at standard atmospheric conditions) |
-500 to 9000 meters
(-1500 to 30000 feet)
|
|
| Display
Update |
1 second |
| Display
Size |
Reflective 3 1/2
digit LCD, 9 mm (0.36 in.) digit height |
| Off-Axis
Wind Speed Accuracy |
-1% @ 5º off-axis;
-2% @ 10º; -3% @ 15º |
| Calibration
Drift |
< 2% after 100
hours use at 7 M/S (~14 KT, 25 KM/H, 16 MPH or 1,400 FPM) |
| Environmental
Sealing |
Electronics enclosure
IP67 - water resistant to 1 m. (3 ft.) |
| Shock
Resistance |
Drop tested to 2
m. (6 ft.) |
| Auto Shutdown |
45 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 |
| Pressure
Sensor |
Monolithic Silicon
Piezoreisitive sensor |
| Dimensions |
unit: 122 x 42 x
20 mm (4.8 x 1.7 x 0.8 in.)
cover: 122 x 46 x 26 mm (4.6 x 1.8 x 1.1 in.) |
| Weight |
unit: 2.3oz (65gr)
cover: 1.3oz (37gr) |
| 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) |
| Temperature
Limitations |
The Kestrel temperature
sensor is able to measure temperatures as low as -30C (-22F) and as high
as 70C (158F). 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. 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. |
| Patents |
5,783,753; 5,939,645;
Other patents pending. |
| Certification |
Wind speed, temperature
and humidity measurements are tested at the factory before packaging.
Factory certification is available for additional fee.
Product is CE certified.
|
| Warranty |
Standard 1-year
warranty 2nd-year after registration. |
|
The manufactures
reserve the right to amend the specification and therefore the information
in this document may be subject to change. |
