Dissolved oxygen (DO) is a liquid process measurement that determines the amount of oxygen carried or dissolved in the process liquid. The sensors produce signals which is proportional to the amount of oxygen present, which are then later transmitted to data loggers. Dissolved oxygen is a demanding parameter in most aqua-cultural applications. The sensor is used in water treatment plants such as effluent activated sludge process, sewage treatment works, as well as in potable water treatment. It is effective in intake protection, river monitoring, fish farming, and other fields where water quality is important. It is also used in bioprocessing applications such as fermentation or cell culture.
Dissolved oxygen sensors do not measure the actual oxygen content but measures the partial pressure of the oxygen in the water. The dissolved oxygen sensor can be used to measure the concentration of dissolved oxygen in water samples being tested in the laboratory or field. Since dissolved oxygen is one of the primary indicators of the quality of an aquatic environment, this sensor can perform a variety of tests or planned experiments to determine the changes in dissolved oxygen levels.
Rising importance of environmental monitoring, need for reliable and accurate measurements, need for minimized installation as well as maintenance time are some of the primary factors driving the growth of the global dissolved oxygen sensor market. In recent times, the sensors are integrated with Intelligent Sensor Management (ISM) technology. This technology provides the highest signal accuracy and stability. ISM technology helps to achieve efficient maintenance planning and contributes to achieving the highest yield in continuous and batch processes.
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There are several parameters that affect the DO measurement accuracy and reliability, they are temperature, salinity, atmospheric pressure and flow. The sensors degrade over time due to bleaching from light exposure. This is one of the factors hampering the growth of the global dissolved oxygen sensor market. Efforts are being taken by many companies to upgrade their research and development activities to introduce innovations in this field.
The global dissolved oxygen sensor market is segmented on the basis of type, application, and region. On the basis of type, the market is segmented into optical and electrochemical. The optical dissolved oxygen sensor is still in the developing phase of use, but electrochemical dissolved oxygen sensors are used in several applications, even at the manufacturing scale. Optical sensors are further segmented into Intensity-based optical sensor and lifetime based optical sensor. Electrochemical sensors are further subdivided into Polarographic and Galvanic. On the basis of application, the global dissolved oxygen sensor market is segmented into aquaculture (fish farming), sea cages, foods and beverages, waste water treatment, safety monitoring, and biopharmaceutical among others. Optical dissolved oxygen sensors are used in deep water profiling as well as low flow applications. Galvanic and Polarographic sensors are used in sampling applications which require the fastest response time. Dissolved oxygen sensors are also used for scour monitoring.
Optical dissolved oxygen sensors have quick time response and good long term strength. Dissolved oxygen sensors also provide reliable measurements for municipal and industrial applications, including harsh environments such as chemical and power plants. Geographically, the dissolved oxygen sensor market can be segmented into North America, Europe, Middle East & Africa, Asia Pacific and Latin America.
Some of the key players operating in the global dissolved oxygen sensor market are Siemens, Honeywell, ABB, Infineon, Eaton, Freescale Semiconductor, Analog Devices, Hach Company, Rosemount Inc., Apera Instruments, LLC, Hamilton, Yokogawa, METTLER TOLEDO and Airmar Technology among others.