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Hash portable oxygen meter Return on a page
The oxygen analyzer is suitable for determining the concentration or saturation of oxygen dissolved in water. The LDOTM Portable Dissolved Oxygen Analyzer is a portable dissolved oxygen meter developed by Hach Company using a new technology for dissolved oxygen measurement and suitable for laboratory and field testing.

- working principle:
The LDOTM Portable Dissolved Oxygen Meter uses a new method of dissolved oxygen measurement, the fluorescence method.
The LDO dissolved oxygen sensor of the HACH Portable Dissolved Oxygen Meter is covered by a layer of fluorescent material. When the blue light emitted by the LED source illuminates the phosphor on the sensor surface, the fluorescent substance is excited to emit red light. The time from the blue light to the release of red light was recorded. The higher the oxygen concentration in the water, the shorter the time to release red light. A correlation is established between the red light release time and the dissolved oxygen concentration, and the portable dissolved oxygen meter calculates the dissolved oxygen concentration by measuring the red light release time and directly displays it on the screen.



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