Projekta Nr.ISO 4407:2025
Nosaukums<p><span lang="EN-GB">This document specifies acceptable methods for determining the level of particulate contamination in a known volume of fluid used in power systems by counting the number of particles captured on the surface of a filter membrane using an optical microscope. It includes accepted methods of particle counting utilising image analysis software or manual counting.</span></p> <p><span lang="EN-GB">The aim of this document is to regulate a uniform, non-subjective filter membrane method of particle counting that will ensure that the classification standard result is achieved by analysing, where feasible, the entire effective filtration area (EFA) of the filter membrane.</span></p> <p><span lang="EN-GB">The resolution and accuracy of the results will be dependent upon the optical system used, whether image capture analysis software is used, and when opting for the manual counting method, the capabilities of the operator.</span></p> <p><span lang="EN-GB">All fluids that can be successfully vacuumed through the appropriate pore sized filter membrane will be able to use the following 2 methods of membrane filter analysis:</span></p> <p><!-- [if !supportLists]--><span lang="EN-GB">—     </span><!--[endif]--><span lang="EN-GB">Automated counting (see Annex A): automated detection, size classification and counting of particles on a membrane filter by using an optical microscope and image analysing software.</span></p> <p><!-- [if !supportLists]--><span lang="EN-GB">—     </span><!--[endif]--><span lang="EN-GB">Manual counting (see Annex B): manual detection, size classification and counting of particles on a membrane filter using an optical microscope.</span></p>
Reģistrācijas numurs (WIID)86030
Darbības sfēra<p><span lang="EN-GB">This document specifies acceptable methods for determining the level of particulate contamination in a known volume of fluid used in power systems by counting the number of particles captured on the surface of a filter membrane using an optical microscope. It includes accepted methods of particle counting utilising image analysis software or manual counting.</span></p> <p><span lang="EN-GB">The aim of this document is to regulate a uniform, non-subjective filter membrane method of particle counting that will ensure that the classification standard result is achieved by analysing, where feasible, the entire effective filtration area (EFA) of the filter membrane.</span></p> <p><span lang="EN-GB">The resolution and accuracy of the results will be dependent upon the optical system used, whether image capture analysis software is used, and when opting for the manual counting method, the capabilities of the operator.</span></p> <p><span lang="EN-GB">All fluids that can be successfully vacuumed through the appropriate pore sized filter membrane will be able to use the following 2 methods of membrane filter analysis:</span></p> <p><!-- [if !supportLists]--><span lang="EN-GB">—     </span><!--[endif]--><span lang="EN-GB">Automated counting (see Annex A): automated detection, size classification and counting of particles on a membrane filter by using an optical microscope and image analysing software.</span></p> <p><!-- [if !supportLists]--><span lang="EN-GB">—     </span><!--[endif]--><span lang="EN-GB">Manual counting (see Annex B): manual detection, size classification and counting of particles on a membrane filter using an optical microscope.</span></p>
StatussStandarts spēkā
ICS grupa23.100.60