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Brand
New Item!
Kestrel®
4500 Pocket Weather
Tracker
Features Include: Heading
(true & magnetic),Wind
direction, Crosswind, Headwind/tailwind, Altitude,
Pressure trend, Barometric pressure, Wet bulb temperature,
Relative humidity in %, Heat stress index, Dewpoint,
Density altitude, Wind chill, Air, water, and snow
temperature °F or °C, Current, average,
and maximum air velocity, Five languages (English,
French, Spanish, German, and Italian), Data Charting,
Made in the USA
PN# 0845
Authorized Dealer
Assembled
in the USA!
5-year
limited warranty!
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For
years our customers have been asking for wind
direction along with wind speed. New for 2007,
the Kestrel 4500 does just that with its built
in digital compass. But it doesn’t stop there.
It also calculates crosswind and headwind/tailwind
with reference to a user-set target heading, and
stores the information along with all the other
environmental readings in its 1400 data point
memory.
Pair
the 4500 Wind Meter with the Kestrel Vane Mount
(available in our store) and you have a
data-logging weather station that sets up in seconds
and rotates in the slightest of breezes. Did we
mention that the whole kit is the ultimate in
portability? It packs down into a 2 x 6 inch pouch
and weighs under 8 ounces.
Also
Available in the NV Configuration (available
in our store)
Military
personnel and pilots flying in darkness are often
concerned with preserving their night vision.
Due to overwhelming demand from our military customers,
the Kestrel NV line was added in 2005.
The
Kestrel 4500NV is available with an Olive Drab
case or a Desert Tan case. The unit has a night-vision
preserving backlight which helps users to sustain
natural night vision. The NV's backlight incorporates
an optical filter to reduce overall brightness
and minimize blue and green spectrum light to
preserve night vision. Additionally, NV backlights
are also much dimmer than a standard backlight,
making it more difficult to detect with the naked
eye in night operations. This backlight appears
soft greyish pink, not red, and is still in the
visible spectrum, so is not compatible with night-vision
equipment.
Certified
and Guaranteed Accuracy
Every single Kestrel manufactured at Nielsen-Kellerman
is calibrated for every single value, either directly
against NIST-traceable standards or against an
intermediary standard that is calibrated daily.
Every unit is shipped with a FREE Certificate
of Conformity that states what calibrations were
performed, and the certified performance specifications.
What does that mean for the customer?
They can be absolutely sure that their weather
readings are accurate to the stated specifications.
Some competing weather instruments claim the same
specifications as Kestrel, but only Kestrel certifies
their accuracy. What does that mean for the customer?
They can be absolutely sure that their weather
readings are accurate to the stated specifications.
Some competing weather instruments claim the same
specifications as Kestrel, but only Kestrel certifies
their accuracy.
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Kestrel
4500 Measures
-
Heading (true & magnetic)
- Wind
direction
- Crosswind
- Headwind/tailwind
- Altitude
- Pressure
trend
- Barometric
pressure
- Wet
bulb temperature
- Relative
humidity in %
- Heat
stress index
- Dewpoint
- Wet
bulb temperature
- Density
altitude
- Wind
chill
- Air,
water, and snow temperature °F or °C
- Current,
average, and maximum air velocity
Kestrel
4500 Includes
-
Soft carry pouch
- Neck
lanyard
- Batteries
- 2 AAA
- Kestrel
Certificate of Conformity
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Kestrel
4500 Features
- Waterproof
and floats
- Time
and date
- Easy-
to-read backlit display
- Data
Logger (automatic and manual)
- Customizable
data storage - 1400 data points
- Minimum,
Maximum and Average values
- Multi-Function
3-line display
- Humidity
sensor can be recalibrated in the field with our
Relative Humidity Calibration Kit.
- Exterior
temperature, humidity, and pressure sensors for
fast and accurate readings
- Customize
screens to display user-selected measurements
- Graph
and recall trends
- User-replaceable
impeller
- Flip-top
impeller cover allows use of other functions while
protecting the impeller
- Data
charting
- Upload
to a computer (with optional interface)
- Five
languages (English, French, Spanish, German, and
Italian)
- US
Patent Nos. 5,783,753 and 5,939,645 and 6,257,074
- 5-year
warranty
- Assembled
in the USA
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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 |
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 |
0.1 |
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). |
Wind
Direction / Forward Heading
1 second |
° |
360° |
1 |
5° |
0
to 360° |
| Cardinal
Points |
360° |
16
Points |
5° |
0
to 360° |
| 2-axis
solid-state magnetoresistive sensor mounted perpendicular
to unit plane to permit operation while measuring
wind speed. Declination/variation adjustable for True
North readout. Accuracy of measurements dependent
upon unit's vertical position. Self-calibration routine
eliminates magnetic error from batteries or unit and
must be run after every full power-down (battery removal
or change). |
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). |
Pressure
1 second
(mb & PSI 4000 model only) |
inHg |
0.3
to 32.5 inHg |
0.01 |
0.05
inHg |
At
77.0 °F, 22.1 to 32.5 inHg |
| hPa
/ mb |
10.0
to 1100.0 hPa / mb |
0.1 |
1.5
hPa / mb |
At
25.0 °C, 750 to 1100 hPa / mb |
| PSI |
0.15
to 16.0 PSI |
0.01 |
0.02
PSI |
At
77.0 °F, 10.9 to 16.0 PSI |
| Monolithic
silicon piezoresistive pressure sensor with second-order
temperature correction. Maximum error over temperature
range 32 to 158 °F (0 to 70°C) , +/- 0.06
inHg / +/-2.0 hPa. Calibration drift typically -0.03
inHg / -1.0 hPa per year. Pressure sensor may be recalibrated
at factory or in field. |
Altitude
1 second |
ft |
-6000
to 30000 ft |
1 |
50
ft |
At
77.0 °F, <19,700 ft. Max error +/- 98 ft |
| m |
-2000
to 9000 m |
1 |
15
m |
At
25.0 °C, <6,000 m. Max error +/- 30 m |
| Temperature
compensated pressure (barometric) altimeter. |
Crosswind
Headwind, Tailwind
1 second |
mph |
0.8
to 135.0 mph |
1 |
5% |
8.5
to 89.0 mph |
| ft/min |
59
to 11,880 ft/min |
1 |
5% |
750
to 7832 ft/min |
| km/h |
1.0
to 217.3 km/h |
0.1 |
5% |
13.7
to 143.2 km/h |
| m/s |
0.4
to 60.0 m/s |
0.1 |
5% |
3.8
to 40.0 m/s |
| knots |
0.6
to 117.3 kt |
0.1 |
5% |
7.4
to 77.0 kt |
| Calculated
from the primary measurements of wind speed, wind
direction and target heading. Auto-switching
headwind/tailwind indication. Ranges expressed
refer to primarywind speed. |
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. |
Wet
Bulb Temperature
1 minute |
°F |
-49.0
to 257.0 °F, 0.0 to 100.0 %RH, 8.86 to 32.48
inHg |
0.1 |
3.6
°F |
32.0
to 100.0 °F, 5.0 to 95.0% RH, 8.86 to 32.48 inHg,
<19700 ft |
| °C |
-45.0
to 125.0 °C, 0.0 to 100.0 %RH, 300.0 to 1100.0
hPa |
0.1 |
2.0
°C |
0.0
to 37.8 °C, 5.0 to 95.0 %RH, -2000.0 to 9000.0
hPa, <6000 m |
| Calculated
from the primary measurements of temperature, relative
humidity and pressure. Temperature indicated by a
wet bulb psychrometer. |
Density
Altitude
1 second |
ft |
-49.0
to 257.0 °F, 0.0 to 100.0 % RH, 8.86 to 32.48
inHg |
1 |
246 |
32.0
to 100.0 °F, 5.0 to 95.0 %RH, 8.86 to 32.48
inHg, <19700 ft |
| m |
-45.0
to 125.0 °C, 0.0 to 100.0 %RH, 300.0 to 1100.0
hPa |
1 |
75 |
0.0
- 37.8 °C, 5.0 to 95.0 %RH, -2000 to 9000
hPa, <6000 m |
| Calculated
from the primary measurements of temperature, relative
humidity and pressure. Air density converted
to equivalent sea level elevation at the International
Standard Atmosphere. |
Max/Avg
Wind Speed (Air Velocity),
Crosswind, Headwind/Tailwind |
One-button
clear and restart of Max Wind Gust and Average Wind
measurement. |
| Data
Storage / Display |
Minimum,
maximum, average and logged history stored and displayed
for every measured value. 1400-point data logger with
graphical display. Auto data storage; interval settable
from 2 seconds to 12 hours. Manual data capture. |
| Data
Upload |
Requires
optional PC interface (NK PN-0830) and provided software.
RS-232 connection with USB adapter available. |
| Display |
Multifunction,
multi-digit programmable dot-matrix display. |
| Display
Update |
1
second. |
| Display
Backlight |
Choice
of aviation green or visible red electroluminescent
backlight. Automatic or manual activation. |
| Clock
/ Calendar |
Real-time
hours:minutes:seconds clock, calendar, automatic leap-year
adjustment. |
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 |
User-selectable:
15 or 60 minutes with no key presses or disabled. |
| Languages |
English,
French, German, Italian, Spanish. |
| Certifications |
CE
certified. Individually tested to NIST-traceable standards
(written certificate of tests available at additional
charge). |
| Batteries |
AAA
Alkaline, two, included. Average life, 400 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
5.0 x 1.8 x 1.1 in / 12.7 x 4.5 x 2.8 cm. |
| Weight |
Unit
3.6 oz / 102 g. |
| Kestrel
Meters are designed and manufactured at NK’s
facility in Boothwyn, Pennsylvania, and are individually
calibrated at the time of manufacture. Every Kestrel
Meter comes with a Certificate of Conformity to document
the unit’s accuracy—all Kestrel measurements
are traceable to the National Institute of Standards
and Technology, ensuring the highest level of reliability.
Additional NIST Calibration and Certification services
are available (please inquire if interested for a
quote). |
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Every
item we list on Ebay is in our inventory. This is one of the many
reasons we remain popular with our customers. Most orders ship either
the same day or the following day after purchase. If for any reason
a product we have listed is not on our shelf, rather than have the
item ship to us from the manufacturer, for time considerations we
may elect to have the item ship direct to you. In this case the
shipping method may not be what was advertised.
Please
email us with any questions prior to purchase. Items are typically
sent out the following business day after payment clears. After
purchase, please click the "pay now" button to either
notify us of your method of payment or make an instant Paypal payment.
We accept credit card payments through Paypal. Shipments outside
of the USA: Duties, taxes, customs and all other government fees
are the responsibility of the buyer. PO BOXES OUTSIDE OF
THE USA: Please send us your phone number after purchase. It is
required on the customs forms and we cannot ship your item without
it. Pennsylvania customers: Optical Overstock is required
to charge a 6% sales tax to Pennsylvania customers only. Please
read the full description before bidding or purchase.
Warranty
and Returns:
If you find the product to be not as described in the listing or
not operational, contact us at your earliest convience. If we cannot
resolve the matter, We will issue a return merchandise authorization
number (RMA). If item is returned, return it at your cost within
fourteen (14) days in original, undamaged box and packing. Pending
inspection, your money will be fully refunded less all shipping
and handling charges or exchanged for another unit. Return shipping
charges are the responsibility of the customer.
After (14) Days
Nielsen-Kellerman
(Kestrel Meters) Plain Language Warranty Here.
Thank You for your interest!
Copyright 2009 Optical Overstock, LLC. All Rights Reserved
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