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Humidity

In 1783, Swiss physicist and geologist, Horace Bénédict de Saussure, built the first hygrometer using a human hair to measure humidity. In 1818, the German inventor, Ernst Ferdinand August, coined the term psychrometer meaning “cold measurer.” It’s a hygrometric instrument based on the principle that dry air promotes evaporation, while wet air hinders it. Both methods are still being used today to measure humidity. Along the way as technology advanced, methods such as chilled mirror combined with electronic sensors greatly advanced the accuracy and precision of humidity measurement. From wall-mount thermohygrometers to multi-probe handheld instruments, InnoCal offers humidity calibrations for virtually any brand or style of meter. Our highly-trained technicians provide NIST-traceable accredited humidity calibrations using Condensation Chilled Mirror Hygrometer technology in a dedicated environmental chamber.
  • Testing range from 5 to 90% RH at uncertainties as low as (K=2) ±0.59% RH
  • Testing at three points: 30, 60, and 80% RH with one temperature point at ambient (22 to 25°C)
For customers who may not require the stringent testing afforded to NIST-traceable calibrations, we also offer a Certificate of Accuracy. This certificate does not include any test data—but states the instrument conforms to the manufacturer’s published specifications and is not NIST traceable.



ISO 17025 Accredited certificates are available for many measurement parameters. Call our experts or view our Scope of Accreditation for more information.

For more information or to schedule service please call 1-866-INNOCAL (1-866-466-6225)





InnoCal 625 East Bunker ct. M/S 14, Vernon Hills, IL 60061-1844 1-866-INNOCAL
                  Fax: 1-847-247-2984 Email: info@InnoCalSolutions.com



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