Both polarography and fluorescence methods can achieve high-precision real-time monitoring. For example, modern devices can quickly capture small changes in oxygen concentration in water bodies, making them suitable for dynamic environmental monitoring. This is crucial for evaluating the self purification capacity of water quality and the health of ecosystems. The dissolved oxygen measuring instrument simplifies the operation process, especially the LDO probe used in fluorescence method does not require polarization time and can be used immediately after startup, greatly reducing the technical requirements for operators. This convenience enables non professionals to efficiently complete testing tasks.

Due to the reduced involvement of chemical reagents and the presence of mechanical wear parts, these instruments exhibit excellent stability during long-term operation. The calibration cycle is extended, and the probability of human error is reduced, especially in automation systems. The measurement results of the two technologies are highly consistent, and the data deviation between multiple tests is extremely small. This feature ensures reliability in scientific research experiments and industrial production, providing a stable basis for decision-making. Fluorescence method is particularly suitable for application scenarios in complex working conditions, such as sewage plants, rivers, and other water bodies with high levels of impurities or pollutants. Its anti-interference ability is superior to traditional electrochemical methods, and its maintenance cost is relatively low.

Precautions for using dissolved oxygen measuring instrument:

1. Avoid bubble interference: When replacing the dissolved oxygen film, there should be no bubbles left in the electrolyte, and there should also be no residual bubbles on the surface of the film. Otherwise, the instrument will mistakenly read the bubbles as oxygen saturated samples, resulting in higher measurement results.

2. Regular cleaning and calibration: It is recommended to clean the electrode every 1-2 weeks. If there are pollutants on the membrane, they should be cleaned in a timely manner; Re calibrate the zero point and range every 2-3 months to ensure measurement accuracy; Approximately once a year, electrode regeneration is carried out, including replacement of internal electrolyte, membrane, and cleaning of silver electrodes.

3. Preventing leakage and damage: If electrode leakage is found during use, the electrolyte must be replaced immediately; Be extra careful during cleaning and maintenance to avoid damaging sensitive membrane structures.

4. Calibration and maintenance: The instrument needs to be calibrated every time it is used or the battery is replaced to ensure the accuracy of the measurement results. In addition, when not in use for a long time, the electrodes should be properly stored according to the instructions to prevent drying or aging.

5. Environmental adaptability: Pay attention to the cleanliness and stability of the measurement environment, and avoid factors such as direct sunlight and severe vibration that may interfere with the instrument. Meanwhile, choose the appropriate measurement mode based on actual needs (such as real-time monitoring or fixed-point sampling).