- Wind Speed: $145
- Temperature: $75
- Relative Humidity: $145
- Barometric Pressure: $95
Every Meter comes with already comes with Certificate of Conformity. This option here is for those needing an individual certified test of NIST for the individual meter. Please note, NIST calibration typically takes 2 weeks to complete.
How it works:
Add your meter(s) or DROP(s) to your cart. Add the NIST calibration to your cart. We'll ship your meter using the shipping method you choose, once the service is completed.
All meters are tested against NIST standards before shipping. By ordering these tests on this page, the meters will actually be tested and certified by Certificate of Calibration as stated below. 99% of the people we sell to, do not need this certification... but for those who do, we offer this service.
Kestrel Meters / DROP & NIST:
All of our measurements are traceable to the National Institute of Standards and Technology (NIST), 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:
- Every wind impeller, including all replacement impellers, is individually wind-tunnel tested against a time of flight ultrasonic anemometer calibrated by NIST.
- 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.
- 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 Meter or DROP is operating within specifications, we offer Factory Calibration and Certification services for any Kestrel Weather Meter. 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.
Kestrel Weather Meter / DROP NIST CALIBRATION (with full Certificate of Calibration)
Wind Speed / Air Flow - Tested in wind tunnel against NIST-calibrated standard (GI Anemometer) at two points - low and high speed. As found and as left data recorded at both points. New calibrated impeller installed prior to as left testing. Recommended calibration interval provided w/ calibration stickers.
Temperature - Verified against NIST-traceable digital thermometer (Eutechnics digital thermometer) at two temperatures. As found and as left data recorded at both points. Recommended calibration interval provided w/ calibration stickers.
Relative Humidity - Verified against NIST-traceable hygrometer (Edgetech Dewprime) at low and high humidity. As found and as left data recorded at both points. Recommended calibration interval provided w/ calibration stickers.
Barometric Pressure - Verified against NIST-traceable barometer (Mensor) at two pressures. Recalibrated to specifications. As found and as left data recorded at both points. Recommended calibration interval provided w/ calibration stickers.
WBGT - There is NO NIST Traceable standard that directly relates to the WBGT measurement we use. Basically the black globe used is unique and part of a derived calculation, but NIST does not have anything comparable to measure against. We do offer NIST calibration for the Globe Temperature along with all the other sensors that wrap into the WBGT measurement but even with that we cannot claim that this is NIST Certified for WBGT as it is still indirect.
FREE SHIPPING & RETURNS (on Meters) on orders over $50 in the USA. (USPS)
Free Return policy: Domestic meters can be ordered risk free for 30 days.
If you would like to return it, simply email us and we'll email you a return label. You will be responsible for packing, taping, and getting it to UPS or US mail service. The meter must contain the original box and all that comes with it or there will be a restocking fee of up to 15%.
We ship via USPS or UPS shipping. You may choose at checkout.
Shipping outside the USA will have these options with prices at checkout:
- First Class Mail for $10 on orders under $50 (intended for battery kits & screen protectors)
- Priority Mail International: $29 FLAT RATE (Limited Online Tracking)
- USPS Express Mail: $49 FLAT RATE (Global Online Tracking)
- UPS Expedited: 2-5 Business Days - Delivery by end of day
- UPS Express: 1-3 Business Days - Delivery by end of day
- UPS Saver: 1-3 Business Days - Delivery by end of day