The D-Opto Logger provides accurate dissolved oxygen and temperature measurements over long periods of time.
Unlike conventional dissolved oxygen sensors, the D-Opto Logger sensing element utilises fluorescence to measure dissolved oxygen. The basic principle involves subjecting a fluorescing compound (ruthenium) to a fixed wavelength of light. When the light source is removed, the compound emits a fluorescence, the intensity of which is dependent on the oxygen levels present in the surrounding water. An extremely stable electronic circuit has been designed to firstly excite the ruthenium and then measure the intensity of the resulting fluorescence, so the D-Opto Logger can provide accurate dissolved oxygen measurements over long periods of time (many months) without re-calibration.
Available for Hire and Sale.