Oxygen sensors are designed to measure the quantity of oxygen in the air or in a closed environment. Fresh air at standard temperature and pressure has 20.95% oxygen (209,5000 ppm). OSHA defines air that contains less than 19.5 percent oxygen as oxygen deficient, and air that contains more than 22 percent as oxygen enriched.
While all our oxygen sensors measure between 0-21% oxygen and are useful for measuring oxygen depletion, 0-25% oxygen sensors can also be used to measure oxygen enriched air.
Gaslab offers oxygen sensors individually for replacement in other manufacturer's devices or on PCBs that connect via USB to our free GasLab software. In addition we also manufacture our own handheld and wall-mounted oxygen meters.