When should I recalibrate my Kestrel Meter's sensors?

Recalibration Recommendations:

Kestrel Humidity Sensor

• Can drift up to +/- 2% for every 24 months.
• This is independent of whether or not the Kestrel is being used.
• Recommend every 2 years to stay within specs.

Kestrel Wind Sensor (Impeller)

• Drift is < 1% after 100 hours use at 16 MPH.
• This is dependent on usage.
• Recommend purchase new impeller every 2 – 3 years based on usage.

Kestrel Temperature Sensor

• Sensor will have negligible drift during the life of the product.
• Should not need recalibration.

Kestrel Pressure Sensor

• Sensor will have negligible drift during the life of the product.
• Can be recalibrated in the field with a known reference source.
• Contact NK before adjusting System Barometric Pressure however.