Kestrel® Tune-up & Calibration Services

NIST Calibration Services

All of our measurements are traceable to the National Institute of Standards and Technology, ensuring the highest level of reliability. Our primary Calibration Standards are sent for calibration in accordance with NIST requirements and based on a regular schedule. Only approved laboratories and NIST themselves are used for these calibration services. 

Every Kestrel Pocket Weather Meter is individually calibrated and tested to be within specification at the time of manufacture as follows:

1. Every wind impeller, including all replacement impellers, is individually wind-tunnel tested against a time of flight ultrasonic anemometer calibrated by NIST.
2. Every humidity-measuring instrument receives a two-point NIST-traceable calibration and is verified at a third intermediate value against a factory-calibrated hygrometer. For customers requesting NIST calibration at specified and/or additional points, extra charges apply.
3. Temperature and pressure are functionally checked and verified against a NIST-traceable calibrated standard or reverified intermediary standard.

For users who must ensure that their Kestrel is operating within specifications, we offer Factory Calibration and Certification services for any Kestrel. For users who require documentation, we also offer fully-documented NIST-traceable calibration services. Full before/after data is reported and shown on the calibration certificate. Instruments may be calibrated at the time of purchase or subsequently.