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NBN ISO 4548-12:2021
Methods of test for full-flow lubricating oil filters for internal combustion engines — Part 12: Filtration efficiency using particle counting and contaminant retention capacity
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Summary
This document specifies a multi-pass filtration test with continuous contaminant injection and using
the online particle counting method for evaluating the performance of full-flow lubricating oil filters
for internal combustion engines. The scope of this document is limited to steady state conditions and
does not address fluctuations in the flow rate.
The test procedure determines the contaminant capacity of a filter, its particulate removal
characteristics and differential pressure.
This test is intended for application to filter elements with an efficiency of less than 99 % at particle
size greater than 10 µm.
NOTE Several test flow loops built into one test rig, or several test rigs, would be necessary to cover the
complete flow range of 2 l/min to 600 l/min.
the online particle counting method for evaluating the performance of full-flow lubricating oil filters
for internal combustion engines. The scope of this document is limited to steady state conditions and
does not address fluctuations in the flow rate.
The test procedure determines the contaminant capacity of a filter, its particulate removal
characteristics and differential pressure.
This test is intended for application to filter elements with an efficiency of less than 99 % at particle
size greater than 10 µm.
NOTE Several test flow loops built into one test rig, or several test rigs, would be necessary to cover the
complete flow range of 2 l/min to 600 l/min.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 06/08/2021 |
| Page Count | 46 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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