What method is used to analyze the oxygen content of nitrox cylinders?

The method used to analyze the oxygen content of nitrox cylinders is an oxygen analyzer. This specialized device measures the concentration of oxygen in a gas mixture, providing a precise reading that is crucial for the safety of divers using nitrox. Knowing the exact percentage of oxygen helps divers plan their dives and manage their exposure to oxygen to avoid toxicity, especially at deeper depths where the partial pressure of oxygen increases.

The other methods listed, such as a pressure gauge, temperature sensor, and depth gauge, do not provide information about the gas composition inside the cylinder. Instead, they measure aspects like pressure, temperature, and depth, which are important for diving but do not indicate the mixture of gases contained in the cylinder. Therefore, using an oxygen analyzer is essential for ensuring the safety and success of nitrox diving operations.