Kestrel 1000, 2000, 2500, 2500NV, 3000, 3500, 3500NV, 3500DT Manual

FEATURES & OPTIONS

The table below shows all Measurement screens available, listed with their corresponding screen icon and "Hint" abbreviation.

Measurement	Icon	Hint	Units of Measure	1000	2000	2500	3000	3500	3500DT
Wind Speed		SPd	mph | kt | B | m/s | ft/min | km/h	•	•	•	•	•	•
Temperature		dEG	˚F | ˚C		•	•	•	•	•
Wind Chill		chill	˚F | ˚C		•	•	•	•
Relative Humidity		r.h.	%				•	•	•
Heat Stress Index		H.I	˚F | ˚C				•	•
Dewpoint Temp		d. P.	˚F | ˚C				•	•	•
Barometric Pressure		bAro	inHg | hPA			•		•	•
Altitude		Alt	m | ft			•		•	•
Wet Bulb Temp		bulb	˚F | ˚C					•	•
Backlit Display					•	•	•	•	•
Pressure Trend						•		•
Delta T		dElt							•
Clock						•		•	•

*The NV series features a dim red backlight for use in low light or nighttime situations.
*Only one arrow icon will be displayed on screen to indicate the 3-hour pressure trend.

GETTING TO KNOW YOUR KESTREL

*All Kestrel Meters with temperature measurement allow you to measure air, water and snow temperature.

GETTING STARTED

Turning ON and OFF

• Press to turn on.
• Hold for 3 seconds to turn off.

The Kestrel Meter will automatically turn off if no buttons have been pressed for 45 minutes.

Select Measurement Mode

• Use or to access each Measurement screen
• The instantaneous Measurement value will be displayed on each screen and updated once per second.

Each Measurement screen will flash a brief "Hint" to clarify which Measurement is being displayed.
Note: Hints are not displayed in the Kestrel 1000.
The Measurement's icons and units of measure will be displayed in the lower line of the screen.

SETUP + OPTIONS

Select the Unit of Measure

• Select the unit of measure. While holding , press to scroll through the available units of measure for that measurement.

Adjust the Clock
*This applies to the 2500, 2500NV, 3000, 3500, 3500NV and 3500DT.

• Adjust the clock. Simultaneously press and to access clock setting. While the time is blinking, press or to change the time. Hold either button down to adjust quickly. Simultaneously press and to exit clock setting.

BAROMETRIC PRESSURE & ALTITUDE ADJUSTMENT

SETTING REFERENCE BAROMETRIC PRESSURE & ALTITUDE: KESTREL 2500 & KESTREL 3500 ONLY

The Kestrel Meter measures "station pressure," which changes in response to both changes in altitude and changes in atmosphere. Barometric pressure is a measurement of the air pressure adjusted to sea level. To obtain accurate barometric pressure and altitude readings, you must first enter EITHER your location's current barometric pressure OR your current altitude.
*Station pressure is displayed if the reference altitude is set to zero.

Starting with Known Altitude for your Location

• Use or to highlight the "BARO" screen.
• Press and simultaneously until the word "REF" starts blinking on screen.
• Use or to adjust the value to the correct known Altitude.
• Press and simultaneously to exit the reference setting mode.

After the Altitude reference is set, place the unit on a table and allow it to stabilize. The accurate Barometric Pressure reading will then be displayed on screen.

Note the correct barometric pressure reading above and use this measurement to set the Altitude:

• Use or to highlight the "Altitude" screen.
• Press and simultaneously until the word "REF" starts blinking on screen.
• Use or to adjust the value to the barometric pressure measurement noted above.
• Press and simultaneously again to exit the setting mode.

Starting with Known Barometric Pressure for your Location

• Use or to highlight the "Altitude" screen.
• Press and simultaneously until the word "REF" starts blinking on screen.
• Use or to adjust the reference value to the correct known Barometric Pressure.
• Press and simultaneously again to exit the setting mode.

After the Pressure reference is set, place the unit on a table and allow it to stabilize. The accurate Altitude reading will then be displayed on screen.

Note the correct altitude reading above and use this to set the Barometric Pressure:

• Use or to highlight the "BARO" screen.
• Press and simultaneously until the word "REF" starts blinking on screen.
• Use or to adjust the reference value to the correct known Altitude.
• Press and simultaneously again to exit the setting mode.

Once these steps are complete, both screens will display accurate readings.
*Be sure to adjust your reference measurements when you change your location for altitude and/or barometric pressure or when there has been dramatic change in weather conditions.

MEASUREMENT NOTES

MEASUREMENTS

Barometric Pressure Trend
: indicates pressure is rising quickly (> +0.18 inHg) in 3 hours
: indicates pressure is rising (within +0.06 and +0.18 inHg)
: indicates pressure is stable (remains between -0.06 and +0.06 inHg)
: indicates pressure is dropping (within -0.06 and -0.18 inHg)
: indicates pressure is falling quickly (> -0.18 inHg)

Select Units of Measure

• Use or to scroll to the desired Measurement screen.
• Hold down , then press to set the desired Units of Measure for the Measurement.

Water and Snow Temperature
The Kestrel Meter may also be used to measure the temperature of water and snow. Submerge the thermistor portion (curly exposed wire in window next to impeller) in water or snow to get an accurate reading. Kestrel Meters are completely waterproof, float and can be safely submerged in water according to IP-67 standards (up to 1 meter for a maximum of 30 minutes).

Max/Avg Function
To view the maximum wind gust recorded, press or until you see "MAX" appear at bottom of screen. Press again to view average wind gust. "AVG" will appear at bottom of screen. Both Max and Average are reset each time the unit is powered down. To restart averaging, simply turn the unit off and back on again.

Hold Mode
Hold Mode can be useful for taking measurements when you are unable to view the display.

• Hold down , then press .
• The word "HOLD" will blink on each screen and all values will stop measuring and freeze in memory.
• Use or to view each Measurement screen in Hold Mode.
• To exit Hold Mode, hold down , then press again.

Backlight*

• Press to activate the backlight for 10 seconds.
• Press again to manually deactivate the backlight before 10 seconds expire.

*The Kestrel 1000 Meter does NOT offer a backlight.

MAINTENANCE & SERVICE ADDENDUM

Replacing the Battery
When your display becomes dim or disappears, you need to change the battery.
Replace battery with a new, clean CR2032 coin-cell battery, with positive side (+) facing up.
CR2032 batteries are available in most stores that sell batteries.
For additional battery safety information, please see the Important Safety and Product Information booklet that is included with this product.

To remove the battery door, hold your Kestrel in two hands and place your two thumbs over the CE and WEEE icons. Simultaneously press the battery door into the unit with both fingers and then twist counterclockwise.

When replacing the battery door, be sure to keep the black rubber O-ring seated in the groove on the case back.

SENSOR CALIBRATION

Impeller
The Kestrel impeller calibration drift is less than 1% after 100 hours of use at 16 MPH | 7 m/s. Drift increases with higher-speed use. For most users, the impeller will provide accurate wind speed/air flow readings for years if not physically damaged. However, if your application requires extremely high precision or if you perform frequent high-speed readings, we recommend you replace your impeller at one-year intervals. Every replacement impeller is supplied with a certificate of conformity and restores your Kestrel's calibration upon installation.

Temperature Sensor (Kestrel 2000 and higher)
The Kestrel temperature sensor exhibits virtually zero drift over time and generally does not require recalibration for accurate performance during the life of the product. If your industry or application requires calibration, please contact NK or a certified calibration lab for options and pricing.

Humidity Sensor (Kestrel 3000 and higher)
The Kestrel humidity sensor calibration drift may be up to +/- 2% over 24 months. For high-precision applications, we recommend recalibration at 24-month intervals. If you require calibration, please contact NK or a certified calibration lab for options and pricing. The humidity sensor may also be recalibrated in the field using a Kestrel Humidity Calibration Kit (NK PN-0802). Instructions for running the recalibration routine are provided with the Humidity Calibration Kit and may also be found at www.kestrelinstruments.com/mwdownloads/download/link/id/37/

Pressure Sensor (Kestrel 2500 & 3500)
The Kestrel pressure sensor drift may be up to 1 mbar over 12 months. For high-precision applications, we recommend recalibration at 12-month intervals. If you require calibration, please contact NK or a certified calibration lab for options and pricing. The pressure sensor may also be recalibrated in the field with reference to a known-accurate and calibrated pressure standard. We do not recommend simply recalibrating to a local weather station as this may not be accurate for your location. Instructions for recalibrating the pressure sensor may be found at www.kestrelinstruments.com/category-service-calibration/kestrel-calibration.

Please register your Kestrel instrument at www.kestrelinstruments.com

Manufactured and Distributed by:
NIELSEN-KELLERMAN
21 Creek Circle, Boothwyn, PA 19061
Phone: (610) 447-1555
Fax: (610) 447-1577
www.KestrelInstruments.com
info@NKhome.com

CONTACT US AT
(800) 784-4221 Toll Free North America
(610) 447-1555
Email: support@KestrelInstruments.com
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