HACH LDO from the United States ™ Portable dissolved oxygen analyzer

-Product Overview:

The dissolved oxygen analyzer is suitable for measuring the concentration or saturation of oxygen dissolved in water. LDO ™ The portable dissolved oxygen analyzer is developed by Hash Company using new dissolved oxygen measurement technology and is suitable for laboratory and field testing.

-Working principle:

LDO ™ The portable dissolved oxygen analyzer adopts a new dissolved oxygen measurement technology - fluorescence method measurement.

The LDO dissolved oxygen sensor of HACH's portable dissolved oxygen analyzer is covered with a layer of fluorescent material. When the blue light emitted by the LED light source shines on the fluorescent material on the surface of the sensor, the fluorescent material is excited and releases red light. The time from emitting blue light to emitting red light is recorded. The higher the oxygen concentration in water, the shorter the time it takes to release red light. Establish a correlation between the release time of red light and dissolved oxygen concentration. A portable dissolved oxygen analyzer calculates the dissolved oxygen concentration by measuring the release time of red light and displays it directly on the screen.

-Application industry:

Suitable for laboratory and field testing.

-Instrument features:

In terms of measuring dissolved oxygen technology, portable dissolved oxygen analyzers with LDO probes use high-precision fluorescence measurement methods. Compared with traditional dissolved oxygen analyzers based on current or polarography, they have many advantages:

1) No polarization required: When measuring dissolved oxygen, the LDO dissolved oxygen analyzer probe does not require polarization time. Traditional dissolved oxygen probes usually undergo polarization processes before use.

2) No calibration required: The LDO dissolved oxygen analyzer probe has been calibrated before leaving the factory, so users do not need calibration when using it and can directly measure dissolved oxygen concentration. Traditional dissolved oxygen meters usually have calibration steps when in use, and only after passing the calibration can dissolved oxygen be measured.

3) Strong anti-interference ability: The probe of LDO dissolved oxygen analyzer is a membraneless probe, so it is not affected by the interference of chemical substances in wastewater, and the measurement results are more accurate.

4) Low maintenance: The LDO dissolved oxygen analyzer does not require replacement of membrane components or filling of electrolyte, greatly reducing maintenance costs and saving time for users.

5) Durable fluorescent cap: The fluorescent cap of the dissolved oxygen meter probe can maintain its accuracy even when scratched or partially contaminated, making it easy to clean.