About Oxygen Analysers


Within all oxygen analysers there are oxygen sensors which are electronic devices that measure the proportion of oxygen (O2) in the gas or liquid being analysed.

The most common application is to measure the exhaust-gas concentration of oxygen for internal combustion engines in automobiles and other vehicles in order to calculate and, if required, dynamically adjust the air-fuel ratio so that catalytic converters can work optimally, and also determine whether the converter is performing properly or not. Divers also use a similar device to measure the partial pressure of oxygen in their breathing gas.

Scientists use oxygen sensors to measure respiration or production of oxygen and use a different approach. Oxygen sensors are used in oxygen analysers, which find extensive use in medical applications such as anaesthesia monitors, respirators and oxygen concentrators.

Oxygen sensors are also used in hypoxic air fire prevention systems to continuously monitor the oxygen concentration inside the protected volumes.

There are many different ways of measuring oxygen. These include technologies such as zirconia, electrochemical (also known as galvanic), infrared, ultrasonic, paramagnetic, and very recently, laser methods.

Our Oxygen Analysers combine innovative thermo-paramagnetic technology with high accuracy and quality performance.


Our O2 Analyser range makes it simple to monitor and maintain air purity with an easy to configure alarm, an accurate and easy to read electrochemical display, and a choice of auto or manual range modes.

The Air 2 Gas Tech Oxygen Gas Analyser range of products is designed to be easy to install and operate, accurate and reliable. We have developed a selection of inline and portable models with a focus on safety and efficiency for users in both industrial and laboratory settings.

See our full range of oxygen analysers we offer here or contact us for more information.