What are the steps required for efficient air filter leak detection?
. According to the French standard, the average value of the dust particle size generated by the dust generating device is 0.08mm, and the average size of the particles is 0.15mm.
At present, only France uses this method to test the source of dust, which is the sodium powder produced by the sprayer. In the first experiment, sampling filter, and then dissolved in water samples on filter paper of fluorescein sodium, fluorescence brightness measurement with fluorescein sodium in aqueous solution under certain conditions, the brightness indirectly reflect the weight of dust.
The average diameter of salt fog particles stipulated by the national standard is 0.4mm, but the measured results of existing domestic equipment are 0.5mm. The measured diameter of salt fog particles in Europe is 0.65mm.
HEPA filter is used in the clean room or clean room terminal filter, is directly related to the most important filter of air cleanliness, and HEPA filter is the main leak leak after site installation for HEPA filter and its system is mainly to check the filter medium in small pinholes and other damage, such as frame, sealing gasket seal and a filter architecture on the other.
