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Manual Data Storage

To manually store data, press the 

 button.  One of the following 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 below for more information on Memory.

Backlight

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.

You can customize your Kestrel 4000 in multiple ways.  Press the

button to access the Main Setup Menu.  Press

the 

 button to select the highlighted setting.

Off -

 Press the 

 or the 

 button to turn the display off.   Even when the Kestrel’s display is turned off, the unit

will continue to automatically store data at the defined Store Rate.  Wind speed will NOT be stored when the unit

is off. To continously measure wind speed, turn the auto shutdown off (pg. 12) The battery life is  decreased if data

is stored frequently.   The only way to completely shut off the unit is to remove the batteries. Custom settings and
data will be stored when the batteries are removed.

Data Log -

  These settings control the data storage properties.  Press the 

 button to return to the Main Setup Menu.

      Setting            Description

Operation

       Auto Store

       When On, data is automatically stored at preset Store Rate.  When

Press 

 or 

 to toggle

      (On/Off )             Off, data is only stored when manually captured with the 

 button.

between On and Off.

       Clear Log         

 All stored data is cleared. This will also clear Min/Max/Avg data.

Press    or 

 to clear the log.

      (Go/Done)

       Reset MMA

      All Min/Max/Avg data is cleared. Chart data will remain intact.

Press    or   to clear the MMA.

      (Go/Done)

       Store Rate*     

 The frequency at which data sets are automatically stored.

Press 

 or 

 to increase or

      (2 sec - 12 hr)    (Battery life may be shortened if data is stored frequently.)

decrease Store Rate frequency.

     

 Overwrite  

       This setting only applies when the data log is full.

Press 

 or 

 to toggle

      (On/Off )            When On, oldest data point is discarded to allow memory for

between On and Off.

           the new data point.  When Off, new data points are not saved.

     

 Man Store  

       When On, data is stored when the 

 button is pressed.When

Press 

 or 

 to toggle

      (On/Off )            off, the 

 button is disabled.

between On and Off.

* When unit is off, data is NOT stored for 2 sec and 5 sec Store Rates.

System -

 The display Contrast and Auto Shutdown an be reconfigured as required.  Press the 

 and 

 buttons

to highlight either Contrast or Auto Shutdown, and the    or   button to adjust.

The Contrast can be adjusted for better visabiltity depending on the ambient lighting conditions.   Press the

  or   button to increase or decrease the contrast from 0 to 20 (0 is lightest, 20 is darkest).

The display can be set to automatically turn off in order to conserve the battery life.  Auto Shutdown will only
occur after the preset time has elapsed without any button presses.  Press the   or   button to scroll through
the Auto Shutdown options (15 minutes, 60 minutes, Off ).

The percent of full battery power is also shown in this menu.

Press the 

 button to return to the Main Setup Menu.

Date & Time -  

The date and time, as well as date and time formats, can be adjusted.

The Time Formats available are: 12 hour and 24 hour.  The Date formats available are day/month/year and month/
day/year.  (See page 5 for instructions on how to set  the date and time. ) Press the 

 button to return to the

Main Setup Menu.

Language - 

Displayed text can be set in one of three languages: English, French or Spanish.  To choose a

language, use the 

 and 

 buttons to highlight the desired language.   Press the

 button to select the

language and return to the Main Setup Menu. Otherwise, press the 

 button to return to the Main Setup Menu

without changing languages.

Restore - 

Factory default menu settings can be restored.  Press the  or   button on either Metric or Imperial to

restore the factory settings.

  

(See page 12 for a list of the Factory Default Settings.) Press the 

 to return to the

Main Setup Menu.

Baro Cal - 

Please contact NK for information about recalibrating the barometric pressure sensor.

Humidity Cal - 

Please contact NK for information about recalibrating the humidity sensor.

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9

Graph Scale -

 These settings control the chart limits of your 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 to change between the upper and lower limits.  Press the 

 button to exit and return to the

measurement selection screen.  Press the 

button  to return to the Main Setup Menu.

Units - 

The units of measure can be adjusted to best suit the application.  The following units are available:

     

     Wind Speed

       Temperature,

Pressure

               Altitude,

          m/s   meters per second

       Dewpoint, Wet

inHg   inches mercury              

Density Alt.

          km/h   kilometers per hour    

    Bulb Temp, Wind

hPa     hecto pascals             

     

m     meters

          kt

  knots

       Chill & Heat Index

psi       pound per

               ft      feet

          mph    miles per hour

       °C  Celsius

             square inch

          ft/m     feet per minute

       °F  Fahrenheit

mb      millibar

          Bft        Beaufort

Highlight the desired measurement by pressing the 

 or 

 button.  Press the   or   button to scroll

through the available units.  Press the 

 button to return to the Main Setup Menu.

User Screens - 

The three User Screens can be reconfigured to display the most appropriate information for the

application.   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 

 button to select the highlighted

User Screen.  Press the 

 and 

 buttons to change lines, and  the   or   button to scroll through the available

measurements for each highlighted line.  Press the 

button to return to the User Screen Setup Menu.  Repeat

above process for the other User Screens or press the 

button to return to the Main Setup Menu.

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12

The below definitions have been greatly simplified in order to keep this section brief.  We strongly
recommend that anyone who wishes to make use of these measurements refer to one of the many
excellent weather references available for a more in-depth definition.  On the internet, visit

www.usatoday.com

 or 

www.noaa.gov

.  Or, locate the USA Today  publication, 

The Weather Book

.

Please note that any words in a definition printed in 

italics

 are themselves defined in this glossary.

Altitude:

 The distance above sea level.  The Kestrel 4000 calculates altitude based on the

measured 

station pressure

 and an assumed or known 

barometric 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 precipitation or storm conditions.  Steady or rising pressure indicates clear
weather.

Density Altitude:

  The 

altitude

 at which you would be, given the current air density.  Often used by

pilots in order to determine how an aircraft will perform.  Also of interest to individual who tune
high performance internal combustion engines, such as race care engines.

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 “temperature/dew point spread”.

A low dewpoint spread indicates high 

relative humidity

, while a large dewpoint spread indicates

dry conditions.

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