Free Nylon Belt Pouch provided with this product worth $19.95.
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Kestrel 3000 Measures
Current Wind Speed
Maximum Wind Gust
Average Wind Speed
Air , Water & Snow Temperature
Wind Chill
Relative Humidity
Heat Stress Index
Dewpoint
NK was the first to provide accurate relative humidity measurements from a hand-held weather meter, and the Kestrel 3000 features two patents on its humidity measuring sensors. A testament to the 3000's accuracy: it's become practically required equipment for wildland firefighters —users whose lives literally depend on the accurate weather data their Kestrel 3000 provides.
From the Kestrel 3000's accurate relative humidity readings, it also calculates the dewpoint and heat stress index —important information to know when working or playing outdoors in hot and humid conditions.
Kestrel Wind Meters are used by NFL trainers to determine how frequently the athletes need to hydrate, and when the conditions are unhealthy for strenuous exercise.
Kestrel 3000 Features
Protective cover with sure-grip overmolding
Data hold function
Large easy-to-read display with backlight
Waterproof and floats
Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit.
U ser-replaceable impeller
External temperature sensor
Patented Quick-Response RH Sensor
All instruments and accessories are completely assembled in the USA
5-year warranty
Kestrel 3000 Includes
A slip-on protective cover
Neck lanyard
CR2032 coin cell battery (Average life 300 hours)
Kestrel Certificate of Conformity
Specification:Measurement
Response Time | Units | Operational Range | Resolution | Accuracy (+/-) | Specification Range |
Wind Speed
1 second | m/s | 0.4 to 60.0 m/s | 0.1 | Larger of 3% of reading or least significant digit | 0.4 to 40.0 m/s |
| ft/min | 59 to 11,948 ft/min | 1 | 59 to 7877 ft/min |
| km/h | 1.0 to 218.0 km/h | 0.1 | 1.0 to 144.0 km/h |
| mph | 0.8 to 135.0 mph | 0.1 | 0.8 to 89.0 mph |
| knots | 0.6 to 118.3 kt | 0.1 | 0.6 to 78.0 kt |
| Beaufort | 0 to 12 B | 1 | 0 to 12 B |
| 1 inch diameter impeller with precision axle and sapphire bearings. Off-axis accuracy -1% @ 5º off-axis; -2% @ 10º; -3% @ 15º. Calibration drift < 1% after 100 hours use at 16 MPH / 7 m/s. Sustained operation above 60 MPH / 27 m/s will wear impeller rapidly and may cause destruction of impeller. Replacement impeller (NK PN-0801) may be field-installed without tools (US Patent 5,783,753). |
Temperature
1 second | °F | -49.0 to 257.0 °F | 0.1 | 1.8 °F | -20.0 to 158.0 °F |
| °C | -45.0 to 125.0 °C | 0.1 | 1.0 °C | -29.0 to 70.0 °C |
| Measures air, water and snow temperature. Thermally isolated, hermetically sealed, precision thermistor mounted externally (US Patent 5,939,645). Calibration drift negligible. |
Relative Humidity
1 minute | %RH | 0.0 to 100.0 % | 0.1 | 3.0 %RH | 5.0 to 95.0 % non-condensing |
| Polymer capacitive humidity sensor mounted in thin-walled chamber external to case for rapid, accurate response (US Patent 6,257,074). (To achieve stated relative humidity accuracy, unit must be permitted to equilibrate to external temperature when exposed to large, rapid temperature changes and must be kept out of direct sunlight.) Calibration drift +/- 2% over 24 months. Relative humidity may be recalibrated at factory or in field using Kestrel Humidity Calibration Kit (NK PN-0802). |
Wind Chill
1 second | °F | 0.7 to 135.0 MPH, -49.0 to 257.0 °F | 0.1 | 1.8 °F | 1.8 to 89.0 mph, -50.0 to 50.0 °F |
| °C | 0.4 to 60.0 m/s, -45.0 to 125.0 °C | 0.1 | 1.0 °C | 0.4 to 40 m/s, -45.6 to 10.0 °C |
| Calculated from the primary measurements of wind speed and temperature. Utilizes the NWS Wind Chill Temperature (WCT) Index, revised 2001, with wind speed adjusted by a factor of 1.5 to yield equivalent results to wind speed measured at 10 m above ground. (Specification temperature limits established by WCT Tables.) |
Heat Index
1 minute | °F | 0.0 to 100.0 %RH, -49.0 to 257.0 °F | 0.1 | 3.6 °F | 70.0 to 130.0 °F, 0 to 100% RH |
| °C | 0.0 to 100.0 %RH, -45.0 to 125.0 °C | 0.1 | 2.0 °C | 21.1 to 54.4 °C, 0 to 100 %RH |
| Calculated from the primary measurements of temperature and relative humidity. Utilizes the NWS Heat Index (HI) tables. (Specification temperature limits established by HI tables.) |
Dewpoint
1 minute | °F | 0.0 to 100.0 %RH, -49.0 to 257.0 °F | 0.1 | 3.6 °F | -20.0 to 158.0 °F, 20.0 to 95.0% RH |
| °C | 0.0 to 100.0 %RH, -45.0 to 125.0 °C | 0.1 | 2.0 °C | -29.0 to 70.0 °C, 20.0 to 95.0 %RH |
| Calculated from the primary measurements of temperature and relative humidity. Temperature to which the air would need to be cooled at a constant pressure to become saturated. |
| Max/Avg Wind Speed | One-button clear and restart of Max Wind Gust and Average Wind measurement. |
| Display | Reflective 3 1/2 digit LCD. Digit height 0.36 in / 9 mm. |
| Display Update | 1 second. |
| Display Backlight | Aviation green electroluminescent backlight. |
Operational Temperature Range
(LCD and Batteries) | The operational temperature range of the liquid crystal display and batteries is 14° F to 131° F / -10 °C to 55 °C. Beyond the limits of the operational temperature range, the unit must be maintained within range and exposed for minimum time necessary to take reading. |
| Storage Temperature | -22 °F to 140 °F / -30 °C to 60 °C. |
| Auto Shutdown | After 45 minutes of no key presses. |
| Certifications | CE certified. Individually tested to NIST-traceable standards (written certificate of tests available at additional charge). |
| Batteries | CR2032, one, included. Average life, 300 hours of use, +/-depending on backlight use. |
| Environmental | Waterproof (IP67 standard). Drop-tested (MIL.STD.810F; unit only. Substantial impact may damage replaceable impeller.). |
| Dimensions | Unit 4.8 x 1.7 x 0.7 in / 122 x 42 x 18 mm. Case 4.8 x 1.9 x 1.1 in / 122 x 48 x 28 mm. |
| Weight | Unit 2.3 oz / 65 g. Case 1.3 oz / 37 g. |
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This sturdy padded nylon case lets you build
a Kestrel 4000 Toolkit perfect for your needs and still carry it on your
belt with ease. The top flap... |
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Replacement impeller for all Kestrel models.
Simply presses out, no tools required to change. |
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New for Spring 2008! A tripod fitted with
the same Kestrel friendly clamp as on our mini tripod. Will accommodate
any Kestrel model. Or remove the... |
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Clamp any Kestrel into this sturdy but lightweight
tripod to take readings in the field. The tripod?s legs extend to permit
a maximum height of 10",... |
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The Kestrel Portable Vane Mount is an ingeniously
simple accessory designed for extreme light weight and portability. The
Vane Mount assembles in... |
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The RH calibration kit includes the following
items: three clear, sealable containers one container with magnesium chloride
solution one container... |
UNDERSTANDING THE MEASUREMENTS
Wind Speed - average over the previous three seconds. The measurement will be accurate
for air flow through the front or rear of the unit.
Maximum Wind Gust - maximum 3 - second wind speed since the unit was turned on.
Average Wind Speed - average wind speed since the unit was turned on.
Temperature - instantaneous temperature of the thermistor, which is located at the end
of the long coiled leads in the open cavity below the impeller. The exposed thermistor will
respond quickly to changes in temperature when air flows past it. For fastest response, either
hold the unit into the wind or wave the unit side to side for 15 seconds. Readings should be
taken in the shade. Water and snow temperatures can be taken by hold the unit in the water
or snow.
Wind Chill - combination of wind speed and temperature, as defined by the US National
Weather Service. Wind chill is the effective temperature on a human or animal at low
temperatures due to wind speed. Wind chill readings will be the same as the temperature
readings above 45ºF or below 3 mph.
Relative Humidity - amount of moisture in the air compared to the amount of moisture the
air can hold for the given temperature, represented as a percent. Because relative humidity is
also a function of the temperature, the response time will be dependent on the temperature
response time (see temperature section above). Readings should be taken in the shade.
Heat Stress – combination of temperature and humidity, as defined by the US National
Weather Service. Heat stress is the effective temperature on a human or animal at high
temperatures due to humidity. Heat stress readings will be the same as the temperature
readings below 70ºF.
Dewpoint – calculated based on temperature and humidity measurements, as a measure of
moisture content in the air. If the dewpoint is very close to the temperature, the air is humid.
If the temperature and dewpoint are the same, dew will form. If this happens below freezing,
frost will form.
MAINTENANCE & TROUBLESHOOTING
Environmental
Every Kestrel Meter is fully waterproof and floats, and has passed mil-spec drop testing.
Storing Your Kestrel
Avoid storing your Kestrel where it will be exposed to temperatures below -30°C [-22°F] or
above 60° C [176° F] for extended periods of time. Doing so may cause permanent damage.
(Note that the inside of a car parked in the hot sun can reach very high temperatures.)
Use of the Lanyard and Cover
The cover can be captured on the lanyard to avoid loss. First, remove the cord poplock. Then
feed the lanyard end through the large opening in the over and out the slot. Replace the
poplock on the lanyard
This product was added to our catalog on Thursday 16 July, 2009.
