Dissolved oxygen meter manufacturers

Everyone must have heard of the dissolved oxygen meter. It is a meter used to measure a common parameter in the industry—dissolved oxygen. Dissolved oxygen, as the name implies, is the amount of oxygen in the air that is dissolved in water, so the dissolved oxygen meter is also an important instrument that a large factory needs to use. So when choosing a dissolved oxygen meter manufacturer, how to choose a suitable manufacturer with complete functions and cost-effective services? Today I will take you to learn about the various manufacturers of dissolved oxygen meters.　　 Before getting to know the manufacturers of dissolved oxygen meters, the editor will first popularize a concept for everyone, that is, dissolved oxygen. The molecular oxygen in the air dissolved in water is called dissolved oxygen. The content of dissolved oxygen in the water is closely related to the partial pressure of oxygen in the air and the temperature of the water. Under natural conditions, the oxygen content in the air does not change much, so the water temperature is the main factor. The lower the water temperature, the higher the dissolved oxygen content in the water. The molecular oxygen dissolved in water is called dissolved oxygen, usually recorded as DO, expressed in milligrams of oxygen per liter of water. Dissolved oxygen value is a basis for studying the self-purification ability of water. The dissolved oxygen in the water is consumed, and it takes a short time to return to the initial state, indicating that the water body has strong self-purification ability, or that the water body pollution is not serious. Otherwise, it means that the water body is seriously polluted, the self-purification ability is weak, or even the self-purification ability is lost. Therefore, it is not difficult to see why dissolved oxygen is a water quality parameter that various industries need to monitor, and its significance is obvious.　　The dissolved oxygen meter is an instrument used to measure the content of oxygen dissolved in an aqueous solution. The oxygen is dissolved in the water through the surrounding air, air flow and photosynthesis. It can be used to measure and monitor processes where oxygen content affects reaction speed, process efficiency or the environment: such as aquaculture, biological reactions, environmental testing (lakes, streams, oceans), water/wastewater treatment, wine production and other process links. For such an important water quality parameter, how to choose an instrument to measure this parameter has become a crucial issue. At present, the mainstream online dissolved oxygen meter on the market is mainly divided into two principles: membrane method and fluorescence method. The membrane method has the earliest origin in history. It uses electrochemical principles. Currently, it has the largest number on the market and the cheapest price. Basically, industry giants are also involved. The other kind of fluorescence method is the second generation technology of dissolved oxygen, which adopts the principle of fluorescence quenching, without polarization, and has a wider range of applications, but the price is higher, which will be about 3-5 times that of the ordinary membrane method. The dissolved oxygen meter can be divided into portable dissolved oxygen meter, desktop dissolved oxygen meter and pen-type dissolved oxygen meter from its portability. And from the use can be divided into: laboratory dissolved oxygen meter, industrial online dissolved oxygen meter and so on. Among online dissolved oxygen meter manufacturers, imported high-end brands such as E+H, Hach, and Mettler are the mainstream. Whether it is membrane method or fluorescence method, its technical level is far beyond the domestic technical level, so if the project If the project budget is high, and the requirements for professionalism and product performance are strong, these three imported companies are a good choice. At the same time, these three companies are also strong in water quality. Therefore, if it is a sewage treatment project, these three companies Both can provide a good one-stop service to select all the water quality instruments for the entire project for you. And if it is biased towards the laboratory, Mettler will obviously have priority over the other two, because Mettler is focusing on the direction of the laboratory. If you want to choose a domestic brand, Kaidi is a professional manufacturer of dissolved oxygen meters. Its fluorescent cap is imported from Hash, and in other aspects, the cost performance is relatively higher than that of imported ones. It is a good choice.