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Kestrel

®

 4250 Racing Weather

®

 Tracker

29

CUSTOMER SERVICE 

KESTREL POCKET WEATHER METERS  5-YEAR LIMITED 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, Pennsylvania, to be the accurate, reliable weather instrument 

you need for your application.  If for any reason you are not satisfied with the performance or operation of 

your Kestrel meter in the first 30 days, you may return it to your place of purchase for a full refund.  

 

We guarantee every Kestrel Pocket Weather Meter to be free of defects in materials and workman-

ship for a period of FIVE YEARS from their date of first consumer purchase. NK will repair or replace 

any defective product or part when notified within the warranty period, and will return the product via 

domestic ground shipping or NK’s choice of method of international shipping at no charge. 

The following shall be excluded from warranty coverage:  damage due to improper use or neglect (in-

cluding corrosion); damage caused by severe or excessive impact, crushing or mechanical harm; modifica-

tions or attempted repairs by someone other than an authorized NK/Kestrel repair agent; impeller failure 

not caused by a manufacturing defect; normal usage wear; failed batteries; and accuracy issues resolvable 

by recalibration. Recalibration is provided free of charge within thirty (30) days of purchase if necessary.

Except for the warranties set forth herein, NK disclaims all other warranties, expressed, implied or 

statutory, including, but not limited to, the implied warranties of merchantability or fitness for a 

particular purpose.  Any implied warranties that may be imposed by applicable law are limited to 

the term of this warranty.  In no event shall NK be liable for any incidental, special or consequential 

damages, including, but not limited to, loss of business, loss of profits, loss of data or use, whether 

in an action in contract or tort or based on a warranty, arising out of or in connection with the use 

or performance of an NK product, even if NK has been advised of the possibility of such damages.  

You agree that repair, and (upon availability) replacement, as applicable, is your sole and exclusive 

remedy with respect to any breach of the NK Limited Warranty set forth herein.  All product liability 

and warranty options are governed exclusively by the laws of the Commonwealth of Pennsylvania.

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, deter-

mined 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.

 

Calibrations, Certifications and Service

Every NK product is tested and calibrated before it leaves our factory. We guarantee that it will perform within 

specifications when you receive it. Each Kestrel Meter comes with a Certificate of Conformity, with the stated 

specifications for that product on the back. If you feel an NK product is not meeting specs when you receive 

it, call us and we’ll make sure you are operating it correctly. If it still appears that it may be out of spec, return 

it to us within 30 days of purchase and we will test and recalibrate all values at no charge. Beyond 30 days, 

we offer reasonably-priced tests, calibration services and N.I.S.T. certified calibrations as well as Kestrel Meter 

tune-ups. 
All  of  our  measurements  are  traceable  to  the  National  Institute  of  Standards  and  Technology,  ensuring  

the  highest  level  of  accuracy.  Our  primary  Calibration  Standards  are  sent  for  calibration  in  accordance  

Содержание 4250

Страница 1: ...n Manual for Kestrel 4250 Racing Weather Tracker 4250 Racing Weather Tracker with Backlight In a hurry Be sure to read pages 5 7 to ensure that your Kestrel is setup properly www kestrelweather com 800 784 4221 Revised 07 29 10 ...

Страница 2: ...N Hold to turn power on or off Press to enter and exit Main Setup Menu IMPELLER Zytec V bearings on a user replaceable impeller IMPELLER COVER Swivel cover protects impeller when not in use DATA UPLOAD OPTICAL COUPLER Software and serial port interface sold separately BATTERY DOOR Sealed with o ring to keep product watertight TEMPERATURE SENSOR Hermetically sealed precision thermistor coiled to is...

Страница 3: ...n the thin end Using tweezers can help Battery Installation Use only AAA batteries Install batteries as indicated on the battery door After installing the batteries the Kestrel 4250 will automatically start in the Date and Time Setting mode See Date and Time Setup below Custom settings and chart data will be saved during a battery change only the date time and MMA values will be lost Turning the K...

Страница 4: ...te Time NAVIGATION The Kestrel 4250 is set up to display 9 Measurements some are calculations in 3 Modes The Measurements are listed here with their corresponding screen icon In addition to these Measurements and Modes there are also 3 User Screens one is hidden in default mode which simultaneously show 3 current measurements and the Date Time Screen Use the and buttons to scroll through the vario...

Страница 5: ...e Kestrel Meter has a high visibility green backlight which makes the display easily read in low light conditions Press the button to activate the backlight The light will remain activated for one minute Press the button within one minute to deactivate the light manually Relative Humidity The Kestrel Meter is capable of measuring RH to a high accuracy 3 RH between 5 and 95 To ensure operation with...

Страница 6: ...de reading to stabilize Note very small changes in pressure generate noticeable changes in altitude In order to provide meaningful readings for activities where altitude changes quickly the Kestrel Meter features rapid altitude response This is why the altitude readings tend to fluctuate by a few feet After obtaining a current altitude from the ALTITUDE screen move to the BARO screen and enter thi...

Страница 7: ...s of station pressure relative humidity and temperature and is not affected by the reference values entered in the BARO and ALTITUDE screens MAIN SETUP MENU You can customize your Kestrel Meter in multiple ways Press the button to access the Main Setup Menu Press the button to select the highlighted setting The Main Setup Menu contains OFF Memory Options Measurements Graph Scale Units User Screens...

Страница 8: ...ttings control the chart limits of your Kestrel Meter Depending on the conditions the lower and upper limits of the chart scale may need to be adjusted in order to get the best view of the data Highlight the desired measurement by pressing the or button Select the highlighted measurement by pressing the button Press the or button to increase or decrease the value of the limits Press the or button ...

Страница 9: ...reconfigured to display the most appropriate information for your application For example if you need to monitor the wind speed humidity and barometric pressure a User Screen can display these current measurement values on the same screen for quick reference Only current measurements can be selected for the User Screens Min Max Avg and Charts are not available Highlight the desired User Screen by ...

Страница 10: ... Monitoring In the Staging Lanes Auto Store On Store Rate 1 min Overwrite Off Man Store On These settings will allow you to track the conditions for more than 24 hours Measurements will be stored every minute and stop storing when the log is full This will let you review the data at your convenience To get the full use of the available memory be sure to clear data at the start of each race day MEM...

Страница 11: ... altitude at which you would be given the current air density Often used by individuals who tune high performance internal combustion engines such as race car engines Also of interest pilots in order to determine how an aircraft will perform Dewpoint The temperature to which air must be cooled in order for condensation to occur The difference between dewpoint and temperature is referred to as the ...

Страница 12: ... The cooling effect of combining wind and temperature The wind chill gives a more accurate reading of how cold it really feels to the human body The Kestrel Meter s wind chill is based on the National Weather Service standards as of November 1 2001 DEFAULT SETTINGS UNIT METRIC IMPERIAL Wind Functions M s mph Temperature Functions C F Barometric Pressure hPa inHg Altitude Functions M Ft Time Format...

Страница 13: ...fects your performance Period If you are not using something to measure the weather conditions then you are missing a piece of valuable information that can help you win races Environmental conditions such as relative humidity density altitude dewpoint and wind speed all influence your car By monitoring these conditions and analyzing how weather patterns from previous races change your car s perfo...

Страница 14: ...d readings will be restored to factory calibration What is the best way to take accurate temperature and humidity readings Avoid taking measurements in direct sunlight and be sure there is airflow over the sensors Especially if you expose the Kestrel Meter to a large temperature swing prior to taking a reading such as taking a Kestrel Meter from the indoors to the outdoors in the winter airflow ov...

Страница 15: ... connection with the use or performance of an NK product even if NK has been advised of the possibility of such damages You agree that repair and upon availability replacement as applicable is your sole and exclusive remedy with respect to any breach of the NK Limited Warranty set forth herein All product liability and warranty options are governed exclusively by the laws of the Commonwealth of Pe...

Страница 16: ... 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 claim Visit www kestrelweather com for more information and pricing for these services Lifetime Customer Care Warranty NK wants you to be an NK customer for life so we take care of you even beyond the terms of the above warranty with our Customer Care Progra...

Страница 17: ...ther Meters are designed and manufactured in the USA by NIELSEN KELLERMAN 21 Creek Circle Boothwyn PA 19061 Phone 610 447 1555 Fax 610 447 1577 Web www kestrelweather com Email kestrel nkhome com Please register your Kestrel Meter at www KestrelWeather com ...

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