Kestrel® Tune-up & Calibration Services

Basic Test & 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.
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 many users, simple recalibration to original specifications, without certification or individual documentation, is sufficient. 

Test Only		Price
Wind Speed / Air Flow	Verified in wind tunnel at single speed. Standard and measured values recorded in R/A, together with recommended action (new impeller if out of specification. *Test may also be performed after calibration at customer's request - only one value to be tested/recorded.	$25
Temperature	Verified against calibrated standard (calibrated Kestrel 4000 or digital thermometer) at single temperature. Standard and measured values recorded in R/A, together with recommended action (recalibration if out of specification). *Test may also be performed after calibration at customer's request - only one value to be tested/recorded.	$25
Relative Humidity	Verified against calibrated standard (calibrated Kestrel 4000 or Edgetech) after equilibration. Standard and measured values recorded in R/A, together with recommended action (recalibration if out of specification). *Test may also be performed after calibration at customer's request - only one value to be tested/recorded.	$25
Barometric Pressure	Verified against calibrated standard (calibrated Kestrel 4000 or Mensor) at single pressure. Standard and measured values recorded in R/A, together with recommended action (recalibration if out of specification). *Test may also be performed after calibration at customer's request - only one value to be tested/recorded.	$25

Basic Calibration (with Certificate of Conformity)		Price
Wind Speed / Air Flow	New calibrated impeller installed (calibrated at two points). Certificate of Wind Speed Conformity issued with SN of unit, Date of Test and operator's initials.	$40
Temperature	Standard new unit calibration procedure applied. Certificate of Temperature Conformity issued with SN of unit, Date of Test and operator's initials.	$15
Relative Humidity	Standard new unit calibration procedure applied. Certificate of Relative Humidity Conformity issued with SN of unit, Date of Test and operator's initials.	$40
Barometric Pressure	Standard new unit calibration procedure applied. Certificate of Pressure Conformity issued with SN of unit, Date of Test and operator's initials.	$25

Test & Basic Calibration		Price
Wind Speed / Air Flow	Perform both test & calibration services (above).	$50
Temperature	Perform both test & calibration services (above).	$30
Relative Humidity	Perform both test & calibration services (above).	$50
Barometric Pressure	Perform both test & calibration services (above).	$40