How to check the integrity of the PES pleated filter element?

Among the pleated filter element series, there is a kind of pleated filter element that has a relatively high filtration accuracy and is particularly standardized in terms of sterilization. This kind of pleated filter element is called a PES pleated filter element. Due to the relatively high requirements for the use of this kind of filter element, the integrity of the filter element must be ensured before it is put into use, especially the integrity of the integrity test, to avoid the failure of normal use of the PES folded filter element after it leaves the factory. The main methods and procedures for the integrity inspection of PES pleated filter cartridges: The method of testing the integrity of PES pleated filter cartridges is mainly to detect the two key parameters of its dispersed flow and bubble point, and determine the actual value of the parameters through this experiment. This kind of experiment is more convenient to implement, the detection method is simple, the detected data is also very reliable, and the experimental results are very reliable. If it is a hydrophilic membrane filter element, it can be tested with pure water, while a hydrophobic membrane filter element is tested with 60% IPA. The test media for these two types of membranes should be distinguished. PES folding filter element integrity inspection mainly uses an automatic integrity tester. Before using this instrument, you must first ensure that the machine is debugged intact and there is no problem, so as to ensure the accuracy of the data of the automatic integrity tester and avoid testing integrity. There is an error at the time. At the same time, it is also necessary to use an automatic integrity tester to check the air tightness of the filter to check whether the intake pressure can reach the set value of the central intake pressure, which is about 5-7bar, the set value of temperature Control at 20-25°C. The components of the automatic integrity tester mainly include: filters, pressure gauges, combined joints, clean air sources, liquid pumps, water tanks (solvent tanks), pipe fittings, etc. Its operation process first needs to be wet, and then the valves are sealed to remove Open the valve and the exhaust valve, turn on the water pump at the same time, and then wait for the exhaust valve to discharge water, then block the exhaust valve, so that the filter element stops and washes away moisture. When flushing the wet filter element, ensure that it is more than 10 minutes, and ensure that the humidity is high by flushing for a long time, so that the inspection results are more accurate.
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