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.
Replacing the Battery
When your display becomes dim or disappears, replace the
battery.Use a large coin to open the battery compartment.
Use only new CR2032 coin cell batteries (available where
watch batteries are sold).Wipe the battery clean of any
fingerprints and insert the positive (+) pole up, angling the
battery downward and pressing it firmly into place.When
replacing the battery door, be sure to keep the black rubber
o-ring seated in the groove on the case back.
Why does the Impeller Appear Imbalanced?
It is NORMAL for the impeller to oscillate as it comes to a stop. It is NOT imbalanced. Rather,
it contains a very small magnet that responds to the earth’s magnetic fields.This does not
affect the accuracy of the wind speed readings because the magnetic field applies both a
Replacing the Battery
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braking and an accelerating force which cancel each other.The impeller has been calibrated
to provide wind speed readings accurate to within at least ± 3%.
High Speed Use
After several hours of sustained operation over 25 M/S (~49 KT, 90 KM/H, 56 MPH or
4,923 FPM), the Kestrel will lose some accuracy due to wear of the sapphire bearings in
the impeller.
Replacing the Impeller
You may recalibrate the wind speed readings by replacing
the impeller. Press FIRMLY on the sides of the black
impeller housing with your thumbs to remove the entire
assembly.When inserting the new impeller,be sure the
arrow is facing the display side of the unit,and is aligned
with the top of the meter. Press on the sides of the housing
rather than the center. Replacing the Impeller
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BEAUFORT SCALE
The Beaufort Scale is a system for estimating
wind force without the use of instruments based
on the visible effects of the wind on the physical
environment.The behavior of smoke, waves, trees,
etc., is rated on a 13 point scale.The scale was
devised in 1805 by the British naval Commander
Sir Francis Beaufort (1774-1857) and is still
commonly used by mariners.
KESTREL POCKET WEATHER METERS
WARRANTY
NK does not believe in“disposable electronics.”We know that Kestrel Meters don’t typically
lead pampered lives,and we design them for years of performance in tough conditions.
Every Kestrel is designed and manufactured at NK’s facility in Boothwyn, PA. We guarantee
every Kestrel Pocket Weather Meter to be free of defects in materials and workmanship
for a period of TWO YEARS from your date of purchase. We will repair or replace any
defective product or part when notified within the warranty period, and will return the
product via domestic ground shipping at no charge.Additionally, each Kestrel has a 30-day
money back guarantee.
Force Description Kts
0 Calm 0
1 Light Air 1-3
2 Light Breeze 4-6
3 Gentle Breeze 7-10
4 Moderate Breeze 11-16
5 Fresh Breeze 17-21
6 Strong Breeze 22-27
7 Near Gale 28-33
8 Gale 34-40
9 Strong Gale 41-47
10 Storm 48-55
11 Violent Storm 56-63
12+ Hurricane 64+
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The following issues do not result from a manufacturing defect and are not covered under
this warranty: damage due to improper use or neglect (including corrosion), impact damage,
modifications or attempted repairs by someone other than an authorized NK repair agent,
impeller failure not caused by a manufacturing defect, normal wear from use of the product,
failed batteries, and re-calibration beyond 30 days from your date of purchase.
Your warranty period will be measured from your date of purchase. The best way to ensure
full warranty coverage is to REGISTER your NK product promptly on our website:
www.kestrelweather.com. We keep your registration information strictly confidential and
do not sell it, share it, or use it for anything but product-related information bulletins (which
you may decline receiving).If you do not register and cannot provide proof of purchase,
your warranty period will be measured from our date of manufacture, determined by
serial number.
We request that you contact NK if you feel your product is not working properly.We can
often solve product issues by phone or e-mail, saving you the time and expense of returning
the unit. If we require the product to be returned, we will issue a Return Authorization to
expedite the handling of your warranty claim.
The Kestrel Pocket Weather Meters are covered by the following patents:5,783,753,
5,939,645, 6,257,074, and 7,059,170.
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