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Kestrel

4500 Pocket Weather

Tracker

Barometric pressure is station pressure corrected to sea level. In order to make the correction, the Kestrel

Meter needs an accurate reference altitude. Altitude is the height above sea level. In order to correctly

calculate altitude, the unit needs an accurate barometric pressure reference, also known as an “altimeter

setting”. Fortunately, you only need to know ONE of these values (current barometric pressure or current

altitude) in order to set your Kestrel Meter up to show accurate readings.

Starting with the known barometric pressure for your location

You can obtain your current barometric pressure by checking an internet weather

site for a nearby location, or contacting a local airport. Set this value as your reference

pressure on the ALTITUDE screen to determine your correct altitude: Press the

button to enter the reference setting mode. Press the button to increase the

reference pressure or the button to decrease the reference pressure. You will notice that the altitude

will change with changes in the reference pressure. Press the button to exit the adjustment mode.

Set your Kestrel Meter down on a table and allow the altitude 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 this value as your reference altitude by following

the same procedure. Both readings will now be accurate.

Starting with a known altitude for your location

You can obtain your altitude from a topographical map or local landmark. Google

Earth is an excellent free program that provides the exact altitude for any given

address: www.earth.google.com/. Set this value as your reference altitude on the

BARO screen to determine your barometric pressure: Press the button to enter

Содержание Sportsman 4500

Страница 1: ...nstruction Manual for Kestrel 4500 Kestrel 4500 NV Models 4500 Pocket Weather Tracker with Backlight In a hurry Be sure to read pages 5 8 to ensure that your Kestrel is setup properly www kestrelweather com 800 784 4221 ...

Страница 2: ...Chart COMMAND BUTTON In Chart Screens press to view data points In Setup Menus press to make selection MANUAL MEMORY BUTTON Press to manually store current conditions to memory MEASUREMENT BUTTONS Press to scroll between screens Date Time Measurements User Defined Screens POWER SETUP BUTTON Hold to turn power on or off Press to enter and exit Main Setup Menu FRONT ...

Страница 3: ...d separately BATTERY DOOR Sealed with o ring to keep product watertight TEMPERATURE SENSOR Hermetically sealed precision thermistor coiled to isolate from case temperature HUMIDITY SENSOR Capacitive sensor with secondary thermistor to improve accuracy and response SERIAL NUMBER PRESSURE SENSOR Monolithic silicon piezoresistive sensor Do NOT insert any objects into this hole AAA BATTERIES BACK ...

Страница 4: ...ive weather meter It not only measures EVERY environmental condition easily accurately and right in the palm of your hand but now also integrates a digital compass to indicate wind direction cross wind and headwind tailwind While the Kestrel 4500 is user friendly and simple to use reading the instruction manual is recommended in order to use the Kestrel 4500 to its fullest potential NK manufacture...

Страница 5: ...then insert the shim between the new batteries with the clear tab out and folded toward the end of the battery with the positive pole the bump pointing up Press the tab down over the battery with the bump through the hole it will not remain completely flat Close the door tightly When changing the batteries lift the clear tab folded over the positive pole of the battery remove the shim and then rem...

Страница 6: ... the Digital Compass Due to the magnetic signature of the AAA batteries the Kestrel 4500 s digital compass must be calibrated or taught to correct for the magnetic field of the batteries This must be done each time the batteries are changed or the battery door is opened If your unit has not been calibrated it will display uncalibrated at the base of the Direction Crosswind and Headwind screens and...

Страница 7: ...at some but not all of the directions would be correct if the unit is not calibrated correctly Remember to hold the Kestrel Meter and the compass far enough away from each other that they do not interfere You should expect the Kestrel Meter s readings to be within 5 of the reference compass or better If the Kestrel Meter s direction readings do not appear to be correct simply run the calibration r...

Страница 8: ...ew Point WB Wet Bulb Barometric Pressure Altitude D Density Altitude The Kestrel 4500 is set up to display 13 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 which simultaneously show 3 current measurements and the Date Time Screen which gives the current da...

Страница 9: ...for information on Chart Navigation Modes use and Note The Direction chart will display the logged direction in degrees with the base line of the chart representing 0 and the top of the chart representing 360 The crosswind and headwind charts will have the same graph scale as the wind speed chart The graph scale can be adjusted in the Main Menu if necessary to ensure that your logged values are di...

Страница 10: ...sor will not shift with the chart Press the button to return to the Chart Mode SPECIAL FUNCTIONS User Screens The Kestrel Meter has three User Screens that can be customized to display three current measurements simultaneously These screens can also be turned off See the Main Menu section for setup instructions Max Avg for Wind Speed Direction Headwind Tailwind Crosswind Wind Chill The Max Avg val...

Страница 11: ...will appear Data Stored data has been captured and will appear on chart Full Overwrite is off and data log is full or Off Manual Store button has been disabled See the Main Setup Menu section for more information on memory Backlight The Kestrel Meter has a high visibility green backlight which makes the display easily read in low light conditions The Kestrel 4500 NV has a night vision preserving b...

Страница 12: ...he accuracy of compass readings the Kestrel 4500 must be positioned as close to the vertical as possible front back and left right when using any compass related feature direction crosswind headwind calibration For every degree off vertical that the unit is positioned compass readings may vary up to three degrees 2 The Kestrel Meter uses two AAA batteries to power the unit These batteries have a m...

Страница 13: ...The NOAA website is an excellent resource for this information www ngdc noaa gov The Kestrel 4500 just like any other compass will measure Magnetic North However True North can be displayed by simply programming the Variation for your location When viewing the Direction in Magnetic North mode the display will show Magnetic North below the reading When viewing the Direction in True North mode the d...

Страница 14: ...nd the button to enter the selection of your choice then follow the instructions on the screen to set the Magnetic Heading either automatically or manually Auto Set allows you to point the Kestrel down the runway or in the direction of the target and it automatically enters the reference heading Point the Kestrel down the runway or target and press the button Manual Set allows you to enter the kno...

Страница 15: ...r the RH value to stabilize This can take as long as 20 minutes the greater the temperature change the greater the time You can use the logging capability of the Kestrel Meter to confirm that the unit has stabilized to a correct reading Set the memory options to a relatively short logging interval 20 seconds works well select the graphical display of RH and you can see when the value is no longer ...

Страница 16: ...nce pressure or the button to decrease the reference pressure You will notice that the altitude will change with changes in the reference pressure Press the button to exit the adjustment mode Set your Kestrel Meter down on a table and allow the altitude reading to stabilize Note very small changes in pressure generate noticeable changes in altitude In order to provide meaningful readings for activ...

Страница 17: ...e planning a day hike would like to track your altitude you ll need to enter the correct reference pressure on the ALTITUDE screen as described above in starting with the known barometric pressure You can now track the altitude changes as you hike In this instance you should ignore the values on the BARO screen since the pressure changes will be due to changes in elevation far more than to changes...

Страница 18: ...s remain more accurate for measuring altitude change This is why airplanes still rely on pressure altimeters not GPS Finally the DENSITY ALTITUDE screen is calculated from the absolute values 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...

Страница 19: ...cally stored at preset Store Rate When Off data is only stored when manually captured with the button Press or to toggle between On and Off Store Rate 2 sec 12 hr The frequency at which data sets are automatically stored Battery life may be shortened if data is stored frequently Press or to increase or decrease Store Rate frequency Overwrite On Off This setting only applies when the data log is fu...

Страница 20: ...o see the logged data for measurements that are hidden simply enter the Measurement screen and turn them back on The data will be stored in the same manner as all other measurements as specified in the Store Rate Graph Scale These settings 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...

Страница 21: ...ppropriate 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 pressing the or button Press the b...

Страница 22: ...s not recommended that you recalibrate without speaking to an NK technician The pressure sensor can be calibrated if necessary It is extremely important to know the precise altitude and mean sea level barometric pressure at the time of calibrating the sensor First set the reference altitude on the BARO measurement screen to the known altitude see Pressure Adjustment section for instructions Then a...

Страница 23: ...the language and return to the Main Setup Menu Otherwise press the button to return to the Main Setup Menu without changing languages Restore Default settings for units of measure date and time formats and system settings can be restored See the Factory Default Settings section for more information Press the or button to highlight the desired default setting Metric Imperial or Defaults Press the o...

Страница 24: ...his will let you review the trip at your convenience when you return You can also manually store the conditions in case you get caught in 40 mile per hour winds or make it to the top of a mountain For more detailed information on your trip set the Store Rate to 2 hours overnight and 10 minutes during the day Soaring Hang Gliding Auto Store On Store Rate 2 min Overwrite Off Man Store On These setti...

Страница 25: ...ich the parachute opens as well as the point you get back on the ground HVAC Environmental Monitoring Auto Store On Store Rate 5 min Overwrite On Man Store Off These settings will record conditions every five minutes for a total storage of almost 2 days You can monitor the conditions in a laboratory or manufacturing plant both day and night to determine if the climate control is working properly O...

Страница 26: ...n reviewing the data After storing the conditions at each location simply review the data and balance the system MEMORY CAPABILITIES Store Rate Total Memory 2 sec 46 min 40 sec 5 sec 1 hr 56 min 40 sec 10 sec 3 hr 53 min 20 sec 20 sec 7 hr 46 min 40 sec 30 sec 11 hr 40 min 1 min 23 hr 20 min 2 min 1 day 22 hr 40 min 5 min 4 days 20 hr 40 min 10 min 9 days 17 hr 20 min 20 min 19 days 10 hr 40 min 3...

Страница 27: ...e Altitude The distance above sea level The Kestrel Meter calculates altitude based on the measured station pressure and the input barometric pressure or reference pressure Barometric Pressure The air pressure of your location reduced to sea level Pressure will change as weather systems move into your location Falling pressure indicates the arrival of a low pressure system and expected precipitati...

Страница 28: ...dewpoint spread indicates dry conditions Heat Index A practical measure of how hot the current combination of relative humidity and temperature feels to a human body Higher relative humidity makes it seem hotter because the body s ability to cool itself by evaporating perspiration is reduced Magnetic North The point on the Earth s surface where the Earth s magnetic field points directly downwards ...

Страница 29: ...ument called a sling psychrometer To measure wet bulb temperature with a sling psychrometer a thermometer with a wet cloth covering over the bulb is spun rapidly through the air If the relative humidity is high there will be little evaporative cooling and the wet bulb temperature will be quite close to the ambient temperature Some exercise physiology guides use wet bulb temperature rather than hea...

Страница 30: ...onth year Month day year SETTING FACTORY DEFAULT Automatic Data StoreOn Data Store Rate 1 hour Data Overwrite On Manual Data Store On User Screen 1 Direction wind speed temperature User Screen 2 Temperature Humidity dewpoint User Screen 3 Pressure altitude density altitude Display Contrast 10 Automatic Shutdown 15 minutes Language English PC Upload Stored data may be uploaded to a PC with the opti...

Страница 31: ...ure screen The adjust the reference barometric pressure on the altitude screen You will need to update the reference pressure and altitude as you change altitude or the weather changes For more information on this topic see the Barometric Pressure and Altitude Adjustment section under Special Functions Why is my Kestrel Meter is not registering wind speed It probably just needs a replacement impel...

Страница 32: ...e but the readings will not be the accurate water speed Why does my screen turn black in the heat Why does screen become sluggish or blank in the cold The liquid crystal display used in Kestrel Meters has an operational temperature range of 14 0 to 131 0 F 10 0 to 55 0 C Above this temperature the whole screen will turn black Below this temperature the liquid crystals will freeze and not display a...

Страница 33: ... 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 Meter has a 30 day money back guarantee 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 corros...

Страница 34: ...t 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 a...

Страница 35: ...so we take care of you even beyond the terms of the above warranty with our Customer Care Program Trade in any Kestrel Pocket Weather Meter no matter the age or condition and receive a generous discount on the replacement product same model only Our Customer Care Program applies only as long as we manufacture the product and does not cover product upgrades Need Help Our NK Knowledge Center has ans...

Страница 36: ...d manufactured in the USA by Instruction Manual for Kestrel 4500 version 4 29 ALL 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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