Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
October 12, 2021
Patent Application Number
20210405
Date Filed
April 5, 2021
Patent abstract
A method of calibration of gas sensors, including breath gas sensors which are portable and for home, consumer, or medical use, wherein the calibration against samples of a measured gas having a concentration above the null value is only performed once to establish a set of calibration ratios of measured known gas concentration readings over null sample readings. Thereafter, in use, the ratio of unknown gas concentration in a test sample to a null value (preferably ambient air) is determined without recalibration, and that ratio is compared with the set of calibration ratios to determine the unknown gas concentration by interpolation or extrapolation.
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