Oxygen sensors can be generally broken into two groups: oxygen sensors used to measure or monitor biological processes, and industrial oxygen sensors.
Oxygen sensors for biological processes are used to monitor oxygen levels in the 17-25% range, the volume of oxygen in air needed to support human or biological life. These sensors range from medical oxygen sensors that monitor blood oxygen levels to oxygen depletion safety alarms that test for low oxygen levels in enclosed areas.
Oxygen sensors are used in industrial applications that require monitoring trace oxygen levels, high oxygen levels and combustion. Industrial oxygen sensors are used to measure anything from 0 parts per billion oxygen molecules by volume up to 100% pure oxygen. They are designed to not only monitor oxygen levels, but to provide a feedback mechanism to control the level of oxygen in industrial processes.
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