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NK has been at the forefront of environmental and weather sensor technology for over a decade. NK holds the following patents for weather sensor inventions built into the Kestrel line of Weather Instruments:
Patent No. 7,059,170: Method and apparatus for measuring relative humidity of a mixture - Covers the following products: Kestrel 4000, 4200, 4250, 4300, 4400, 4500, 4600
Patent No. 7,249,493: Method and apparatus for measuring relative humidity of a mixture - Covers the following products: Kestrel 3000, 3500, 5000 series, DROP D2, DROP D3
Patent No. 6,257,074: Vane anemometer with thermally isolated sensors - Covers the following products: Kestrel 3000, 3500, 4000, 4200, 4250, 4300, 4400, 4500, 4600
Patent No. 5,939,645: Vane anemometer having a modular impeller assembly - Covers all Kestrel meters model 2000 and above.
Patent No. 5,783,753: Vane anemometer having a modular impeller assembly - Covers all Kestrel meters having an impeller
Patent No. D714,664: Electronic data device design - Covers all Kestrel DROP loggers
Patent No. D714,665 : Electronic data device design - Covers all Kestrel DROP loggers
Patent No. D718,157: Electronic data device - Covers all Kestrel DROP loggers