Instrument, system and methods for use in respiratory exchange ratio measurement

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The instrument has sensors for sensing oxygen and/or carbon dioxide content in exhaled air received in a receiving area in front of a mouth, an air flow rate sensor for sensing exhaled air flow rates in a flow rate sensing location and an air shield for shielding the receiving area and the flow rate sensing location from air flows from the environment. The air shield leaves a space between the air shield and the mouth of the person in open communication with the environment. The air flow rate sensor senses air flow speed in a location spaced from the exhaled air receiving area, rearward of a front end of the exhaled air receiving area and above a lower end of the exhaled air receiving area. In another embodiment a sensor for sensing ambient wind is provided.
Originele taal-2English
OctrooinummerWO2021025552
Prioriteitsdatum02/08/2019
Indieningsdatum31/07/2020
StatusPublished - 11-feb.-2021

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