Kestrel 1000 User Manual

10
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
ow 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 certicate of confor-
mity and restores your Kestrel’s calibration upon
installation.
Temperature Sensor (Kestrel 2000 and higher)
The Kestrel temperature sensor exhibits virtu-
ally 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 certied 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-preci-
sion applications, we recommend recalibration
at 24-month intervals. If you require calibration,
please contact NK or a certied calibration lab
for options and pricing. The humidity sensor may
also be recalibrated in the eld using a Kestrel Hu-
midity 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.nkhome.com/support/kestrel-
support/manuals-and-downloads.
Pressure Sensor (Kestrel 2500 & 3500)
The Kestrel pressure sensor drift may be up to 1
mbar over 12 months. For high-precision applica-
tions, we recommend recalibration at 12-month
intervals. If you require calibration, please contact
NK or a certied calibration lab for options and
pricing. The pressure sensor may also be recali-
brated in the eld 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.nkhome.
com/support/kestrel-support/manuals-and-
downloads.
SENSOR CALIBRATION

Kestrel 1000 Specifications

General

Brand	Kestrel
Model	1000
Category	Measuring Instruments
Language	English