Aanderaa Oxygen Optode 3930 oxygen sensor
|Within Vocab||SeaVoX Device Catalogue|
|Alternative Labels||Aanderaa Oxygen Optode 3930|
|Definition||A dissolved oxygen sensor which can be connected via cable to AADI SR10/VR22 Data logger. Measurement based on the ability of selected substances to act as dynamic fluorescence quenchers. The fluorescent indicator is a special platinum porphyrin complex embedded in a gas permeable foil that is exposed to the surrounding water. A black optical isolation coating protects the complex from sunlight and fluorescent particles in the water. This sensing foil is attached to a window providing optical access for the measuring system from inside a watertight titanium housing (depth rating 6000m). The foil is excited by modulated blue light, and the phase of a returned red light is measured. By linearizing and temperature compensating, with an incorporated temperature sensor, the absolute O2 concentration can be determined. Accuracy < 8uM or 5% (whichever is greater).|
|Has Current Version||1|
||dissolved gas sensors||Mapping: 1602279|
||Aanderaa Data Instruments AS||Mapping: 1602286|
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