Dissolved Oxygen Meter

Optical dissolved oxygen sensors use luminescence quenching technology.

A light source excites the fluorescent material, and oxygen molecules affect the fluorescence lifetime. The sensor calculates dissolved oxygen concentration based on this change.

Optical dissolved oxygen sensors use luminescence quenching technology to measure oxygen concentration.

The sensor contains a luminescent material coated on the sensing surface. A light source excites the material, generating luminescence. When oxygen molecules come into contact with the sensing layer, they reduce the luminescence intensity and lifetime.

The sensor measures these changes and calculates the dissolved oxygen concentration based on the relationship between oxygen concentration and luminescence response.