Abstract: A gas concentration measurement system and an airway adapter thereof are provided. The gas concentration measurement system includes the airway adapter and a gas concentration detection device including a main body. The main body includes an accommodating passageway, a check unit, a transmitter unit and a receiver unit. The airway adapter includes an inlet section, a detection section, an identification part and an outlet section. The detection section includes a light entering detection window and a light exiting detection window that are integrally formed. The identification part has an identification chip disposed therein. When the airway adapter is mated with the accommodating passageway of the gas concentration detection device along an axis of the airway adapter, the identification chip of the identification part is read to check whether or not the airway adapter is matched with the gas concentration detection device.

Abstract: A gas concentration measurement system and an airway adapter thereof are provided. The gas concentration measurement system includes the airway adapter and a gas concentration detection device including a main body. The main body includes an accommodating passageway, a check unit, a transmitter unit and a receiver unit. The airway adapter includes an inlet section, a detection section, an identification part and an outlet section. The detection section includes a light entering detection window and a light exiting detection window that are integrally formed. The identification part has an identification chip disposed therein. When the airway adapter is mated with the accommodating passageway of the gas concentration detection device along an axis of the airway adapter, the identification chip of the identification part is read to check whether or not the airway adapter is matched with the gas concentration detection device.

Abstract: According to one embodiment, the gas analyzer system comprises a gas adaptor, a light guide tube and a measure case. The gas adaptor is used for guiding a gas to be detected, wherein the gas is flowed in the gas adaptor along a flow direction. The light guide tube embedded in the gas adaptor, wherein the light guide tube has a light source end and a sensor end, the light guide tube has at least one aperture for the gas entering the light guide tube, and a normal vector of a cross surface defined by the aperture has an angle with respect to the gas inhale direction, wherein the angle is not 180 degrees. The measuring case for accommodating the gas adaptor comprises a light source corresponding to the light source end and a sensor corresponding to the sensor end of the light guide tube.