Kestrel
®
4500 Pocket Weather
®
Tracker
What is the best way to take accurate temperature and humidity readings?
Avoid taking measurements in direct sunlight, and be sure there is airflow over the sensors. Especially
if you expose the Kestrel Meter to a large temperature swing prior to taking a reading (such as taking
a Kestrel Meter from the indoors to the outdoors in the winter), airflow over the sensors is necessary
to measure accurate temperature and humidity readings. You can ensure airflow by either placing the
Kestrel Meter in a breeze, or by waving it back and forth. If no airflow can be provided, you must allow
up to 20 minutes for the values to stabilize and accurate readings to be displayed.
Can my Kestrel Meter measure water speed by placing it in wind speed mode and submerging it?
Even though your Kestrel Meter is fully waterproof and can be submerged without damage, the viscosity
of water is different than that of air. The Kestrel Meter will display a value, 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 reading. Even in these conditions, your Kestrel Meter will still
continue to measure and record readings as specified by the automatic and manual data storage rates,
you will just not be able to read the display until the environment’s temperature is within the operational
range. In cold environments, you can keep the Kestrel Meter warm in your pocket and remove it only to
take readings. Be sure to wave the unit back and forth to create airflow over the sensors to ensure the
most accurate reading possible.
Why doesn’t my Kestrel Meter match the local Weather Report?
Obtaining a weather report from a local television station, airport or internet site will give you the
weather where those instruments are, which is not necessarily the same as where you are. Your Kestrel
