The operating principle of the paramagnetic sensor is the paramagnetic susceptibility of the oxygen molecule, a physical property which distinguishes oxygen from most other gases. The sensor incorporates two nitrogen-filled glass spheres mounted on a rotating suspension. This assembly is suspended in a strong magnetic field.

The paramagnetic O ↓ 2 sensor enables the selective measurement of oxygen in gas mixtures due to its paramagnetic property, which stands out compared to other gases. This causes a change in inductance in the field of a high-frequency coil. The weak effect requires measures to keep interference to a minimum.

Paramagnetic oxygen sensors are based around a small glass dumbbell filled with an inert gas. The dumbbell is suspended by a platinum wire inside a cylindrical container. This is held within a non-uniform magnetic field. When a gas flows through the sensor, its oxygen molecules are attracted to the stronger...

Paramagnetic analyzers leverage this property to detect the gas with excellent precision. The sensors in these devices are mounted or suspended within a magnetic field. Since oxygen molecules are attracted to magnets, the presence of oxygen in a sample will force the sensors out of position.

Our groundbreaking magnetodynamic Paramagnetic technology provides fast, accurate and sensitive measurements of percentage levels of O 2. The Paramagnetic cell consists of two nitrogen-filled glass spheres, mounted within a magnetic field, on a rotating suspension, with a centrally-placed mirror.