Kestrel 4000 Manuale utente

Revised 09/07

Instruction Manual For Kestrel 4000 &

Kestrel 4000 NV Models

4000

Pocket Weather®Tracker

with Backlight

www.kestrelweather.com 800.784.4221

In a hurry?

Be sure to read pages

5-7 to ensure that

your Kestrel is setup

properly!

Revised 02/09

Kestrel®4000 Pocket Weather®Tracker

BACKLIGHT BUTTON Press

to activate backlight for

1 minute.

MODE BUTTONS

Press to change mode of

measurements: Current, Min/

Max/Avg, 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

Dened Screens.

POWER/SETUP BUTTON

Hold to turn power on or

o. Press to enter and exit

Main Setup Menu.

FRONT

IMPELLER Sapphire jewel

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 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

Kestrel®4000 Pocket Weather®Tracker

TABLE OF CONTENTS

GETTINGSTARTED.....................................................................................5

NAVIGATION...........................................................................................6

SPECIALFUNCTIONS...................................................................................8

MAINSETUPMENU ...................................................................................13

APPLICATIONEXAMPLES..............................................................................18

MEMORYCAPABILITIES................................................................................21

GLOSSARY............................................................................................21

DEFAULTSETTINGS....................................................................................24

FREQUENTLYASKEDQUESTIONS......................................................................25

CUSTOMERSERVICE...................................................................................27

Congratulations on the purchase of your Kestrel 4000 Pocket Weather Tracker! The Kestrel 4000 is the next

generation of weather monitoring. Now, you can instantly measure EVERY major environmental condition

easily, accurately and right in the palm of your hand.

While the Kestrel 4000 is user-friendly and simple to use, reading the instruction manual is recommended in

order to use the Kestrel 4000 to its fullest potential.

NK, manufacturer of Kestrel Pocket Weather Meters, is available to answer questions and provide support.

Contact NK by phone: 610.447.1555, fax: 610.447.1577, email: info@nkhome.com, or

web: www.nkhome.com.

GETTING STARTED

Pouch and Lanyards

A neck lanyard and wrist and a small pouch have been provided. To install the lanyard,

feed the thin end of the lanyard around the metal post on the battery door (as shown

in diagram). Feed the thick end of the lanyard through the loop on 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 4000 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 Kestrel Meter ON and OFF

To turn the Kestrel Meter ON, press the button. To turn the Kestrel Meter OFF, hold the button for two

seconds. Or, press the button, then press the button with the word OFF highlighted. (Note: your unit

will continue to automatically store data when the power is turned o.) When rst turned on, the Kestrel

Meter will display a splash screen displaying the model number, the battery indicator, and the code version.

This battery indicator will indicate the percentage of battery life remaining, which is helpful in preventing

unexpected dead batteries.

Date and Time Setup

The rst time that you turn on your Kestrel Meter, as well as after a battery change, you

will need to set the date and time. The Introduction Screen will appear for 3 seconds,

followed by the Date/Time Setup Screen. Press the and buttons to scroll through

the settings. Press the and buttons to scroll through the setting options. After

Kestrel®4000 Pocket Weather®Tracker

entering the date and time, press the button to exit the Date/Time Setup. Then press the button

again to exit the Main Setup Menu.

NAVIGATION

Measurements use

and

Wind Speed

Temperature

Wind Chill

Humidity

Heat Index

Dew Point

Wet Bulb

Barometric Pressure

Altitude

Density Altitude

The Kestrel 4000 is set up to display 10 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 date and

time. Use the and buttons to scroll through the various

Measurements, followed by the 3 User Screens and the Date/Time

Screen. Any of these screens can be turned o so that you can

customize your Kestrel Meter to show the screens that your application

requires. (See the Measurements section in the Main Menu.)

The Modes are displayed below. Use the and buttons to scroll

through the various Modes. From any mode, you may still scroll to a

dierent Measurement by pressing the and buttons.

Current - Displays the instantaneous reading.

Min/Max/Avg - Displays the Minimum/Maximum/Average readings

from stored data. If there is no stored data, the values will be

displayed as --.-.

Chart - Displays a graphical representation of up to 2000 stored

data points for each measurement. If there is no stored data, the axis

will appear, but the chart will be blank. (See the following section

for information on Chart Navigation.)

Modes use

and

Navigation of Charts

The Kestrel 4000 is capable of storing up to 2000 data points for each measurement. To review the data,

press the button while viewing a chart. A cursor will appear on the most recent data point. Press the

and buttons to scroll through the data points. The date and time at which the data was stored will be

displayed at the bottom of the screen, and the data value will be displayed at the top of the screen. Hold

down the or button to scroll quickly through the data points.

Press the or button to review the data for the other measurements. Please note that the cursor will

remain at the same date and time. If new data is stored while viewing chart data, the entire chart will shift

left with the new data point charted on the right. The cursor will not shift with the chart.

Press the button to return to the Chart Mode.

Value

Chart

Cursor

Date & Time

Kestrel®4000 Pocket Weather®Tracker

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 o. (See the Main Menu

section for setup instructions.)

Max/Avg for Wind Speed & Wind Chill

The Max/Avg values for the wind speed and wind chill values are measured independently from the stored

and charted data.

This allows the user to start and stop the averaging period in the most appropriate manner for their

application. Averaging on all wind-related values (Wind Speed and Wind Chill) will be started and

stopped together.

While viewing the Min/Max/Avg screen for any of these measurements, hold the unit into the wind, and

press the button when the screen displays “--average”to begin collecting data for all measurements, and

again when the screen displays “--stop” to stop collecting data and hold the values on the display. Press the

button when the screen displays “--clear” to clear the data. This routine will work simultaneously for all

measurements, regardless of which one is displayed while the routine is run. The Max/Avg for these wind

values will not aect any other Min/Max/Avg or stored data.

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 o and data log is full), or O (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 3500 NV has a night-vision preserving backlight which helps users to sustain natural

night vision. The NV’s backlight incorporates an optical lter to reduce overall brightness and minimize

blue and green spectrum light to preserve night vision. Additionally, the backlight is much dimmer than a

standard backlight, making it more dicult 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 it is not compatible with night-

vision equipment.

It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. Even a short

burst of white, yellow, green or blue light “bleaches out” the rod cell photoreceptors in the eye and causes

night blindness until the entire adaptation process can take place again. Light in the red spectrum does not

cause this “bleaching out”, preventing night blindness and night vision fatigue.

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 within these specications, please follow these recommendations:

• Avoid taking measurements in direct sunlight, which will heat the air inside the humidity sensor

enclosure and cause inaccurate readings.

• If your circumstances force you to expose the Kestrel Meter to a large temperature swing prior to taking

a relative humidity reading (such as when taking a Kestrel Meter stored inside at 70° F outside to a

temperature of 40° F), you will need to take additional steps to ensure that the Kestrel Meter’s external

temperature sensor is in thermal equilibrium.

Kestrel®4000 Pocket Weather®Tracker

- Ideally, provide an airow of at least 1 M/S (2.2 MPH), over the temperature sensor—point the

Kestrel Meter into the airow. If there is no airow, simply wave the unit back and forth so air

passes over the sensors. With airow over the temperature sensors and humidity chambers,

readings within specications will be provided within two to three minutes, even after a large

temperature shift.

- If no airow can be provided, you must allow sucient time for 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 conrm 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

changing signicantly. At that point, the RH value is stable and can be relied upon to be within the

accuracy specications.

Barometric Pressure and Altitude Adjustment

The Kestrel Meter measures “station” pressure—the actual air pressure in the measurement location—and

uses this value to calculate barometric pressure and altitude. Station pressure changes in response to

two things—changes in altitude and changes in the atmosphere. Because the Kestrel Meter is constantly

changing location and altitude, it is important to enter adjustments or“references” when accurate pressure

and altitude readings are needed.

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.

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