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How do you choose the right FFU laminar air supply unit for electronics factories?
How do you choose the right FFU laminar air supply unit for electronics factories?FFU laminar air supply units are widely used in electronics, pharmaceuticals, and other fields. They can achieve local high cleanliness control and ensure key processes. They are important equipment for creating an ideal clean environment. How should we choose FFU laminar air supply units? And whether its filtering effect reaches the high-efficiency level. To meet the high requirements of electronics factories for cleanliness.Filtration efficiency test: This is the core indicator for evaluating the filtering effect of FFU. Generally speaking, the filtering efficiency of high-efficiency filters is above 99.97%. If filters such as liquid tank high-efficiency and partition-free high-efficiency filters are used, the filtering efficiency is as high as 99.999%. You can use a special particle counter to measure the number of particles in the air before and after the filter, and then calculate whether the filtering efficiency can meet the cleanliness requirements of the electronics factory. Wind speed and air volume detection: The wind speed and air volume of FFU are also important factors in evaluating its filtering effect. Generally, the wind speed of FFU should be controlled at about 0.35 m/s to 0.45 m/s, and the air volume must meet the use requirements. For example, when the air volume reaches 1200 cubic meters per hour, the amount of air processed per unit time is ideal, which can effectively improve filtration efficiency. At the same time, the uniformity of the wind speed should meet the standard that the difference in wind speed at each point does not exceed 10%. If the unevenness is large, such as a difference of 20% or even higher, it can easily cause turbulence and affect the overall performance. Therefore, according to the specific production area and process requirements of the electronics factory, the selection of appropriate wind speed and air volume can effectively ensure the air treatment effect. Wind resistance measurement: Wind resistance measurement is of great significance for evaluating the performance of high-efficiency filters. Its wind resistance is usually between 50 and 200 Pa. The smaller the wind resistance, the lower the energy consumption, but the filtration efficiency may be affected. To meet the requirements of 99.5% filtration efficiency, the wind resistance should be kept between 60 and 120 Pa as much as possible to achieve a balance between performance optimization and energy saving. Appearance and physical condition inspection: The appearance of the FFU and its filter should be inspected regularly, including checking for damage, deformation, stains, etc., and confirming whether the labels and logos are clear and complete. These basic physical conditions can preliminarily determine the reliability of its working state. Comparison and standards: Compare the test data with the industry standards or data provided by the manufacturer to determine whether the filtration effect of the FFU laminar air supply unit is efficient. At the same time, you can also refer to the performance data of other similar equipment for comprehensive evaluation. Please note that the above steps and indicators require professional equipment and personnel to operate and analyze. Therefore, when conducting an evaluation, it is recommended to seek the help of professionals to ensure the accuracy and reliability of the test. In addition, regular maintenance and maintenance of the FFU laminar air supply unit is also an important measure to ensure its efficient filtration effect. |
