Kestrel Instruments Support & FAQs

Humidity

• The humidity sensor can drift up to +/- 2% for every 24 months. (This is independent of whether or not the Kestrel is used on a regular basis)
• NK recommends calibrating every 2 years to stay within spec.

Wind(Impeller)

• The impeller drift is <1% after 100 hours use at 16 MPH(This is dependent on usage)
• NK recommends purchasing a new impeller every 2-3 years base on usage.

Temperature

• The temperature sensor will have a negligible drift during the life of the product.
• The temperature sensor should NOT need recalibration.

Pressure

• The pressure sensor will have a negligible drift during the life of the Kestrel.
• This sensor can be recalibrated in the field with a known reference source.
• Please Contact NK before adjusting the system barometric pressure.