US 11,709,158 B2
Method and apparatus for measuring humidity using an electrochemical gas sensor
Keith Pratt, Portsmouth (GB); and Tom Gurd, Eastleigh (GB)
Assigned to HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on May 10, 2021, as Appl. No. 17/316,142.
Application 17/316,142 is a continuation of application No. 16/376,624, filed on Apr. 5, 2019, granted, now 11,029,294.
Prior Publication US 2021/0262998 A1, Aug. 26, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 27/404 (2006.01); G01N 33/00 (2006.01); G01K 1/14 (2021.01); G01N 27/413 (2006.01)
CPC G01N 33/0031 (2013.01) [G01K 1/14 (2013.01); G01N 27/4045 (2013.01); G01N 27/413 (2013.01); G01N 33/0036 (2013.01)] 17 Claims
OG exemplary drawing
 
10. A method of determining ambient humidity comprising:
measuring electrolyte concentration in a first electrolyte-based electrochemical gas sensor over a first period of time;
measuring temperature of ambient environment surrounding first electrolyte-based electrochemical gas sensor using a temperature sensor over the first period of time;
determining, using a controller, an average humidity value of the ambient environment over the first period of time based on an average ambient temperature and an average rate of change of the electrolyte concentration measured over the period of time.