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analyzer

Figure 2 Ventilatory hood system showing a hood that is placed on the subject's head, a mixing chamber, and O2 and CO2 analyzers. A fan maintains a slight negative pressure in the hood to pull air into the chamber and also to prevent the escape of the expired air from the system. The air is mixed in the mixing chamber and is analyzed for oxygen and carbon dioxide by the respective analyzers. Results are calculated by the computer.

Figure 2 Ventilatory hood system showing a hood that is placed on the subject's head, a mixing chamber, and O2 and CO2 analyzers. A fan maintains a slight negative pressure in the hood to pull air into the chamber and also to prevent the escape of the expired air from the system. The air is mixed in the mixing chamber and is analyzed for oxygen and carbon dioxide by the respective analyzers. Results are calculated by the computer.

Mixing chamber

Diluting chamber

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