Air Cleaner Fine Test Dust (ACFTD)
Fluidlexikon Air Cleaner Fine Test Dust (ACFTD) Test dust for undertaking the multipass test according to ISO 4572. The quantities of the individual particle sizes are defined. In this way a consistent
Test bench
Fluidlexikon Test bench System to review the correct functioning and the operational safety of the static and dynamic behaviour, as well as the correct functioning of technical devices and assemblies.
Test conditions
Fluidlexikon Test conditions Before any evaluation of measured values of a measured variable , a test should be conducted as to whether the measurements have been taken under the same test conditions and [...] possible test conditions. Repeat conditions : are present if the same observer performs measurements according to a defined measuring procedure on the same measurement object under the same test conditions [...] defined measurement procedure on the same measurement object under different test conditions (different measuring devices, different test locations or laboratories). The standard deviation under conditions of
Multipass test
Fluidlexikon Multipass test Test method for determining the filtration efficiency in general ( retention rate, filtering grade ). This involves passing a specific mineral oil contaminated with quartz sand [...] sand ( Air Cleaner Fine Test Dust (ACFTD) ) of various grain sizes through the filter to be tested several times. The measure of the retention rate is the β (Beta-) value, which shows the relationship [...] in front of the filter and those of the same size behind the filter. The standard for the multipass test is set out under ISO 4572.
ACFTD test dust
Fluidlexikon ACFTD test dust Air Cleaner Fine Test Dust (ACFTD)
Test pressure
Fluidlexikon Test pressure Static pressure above the calculated pressure to check a device or system under defined conditions. There must be no long-lasting malformation, damage or incorrect functioning
Test signals
Fluidlexikon Test signals All signals of sensors that are used to check device functions. Test signals are also all signals routed over interfaces to monitor the operating status of the device, e.g. actual
Filtration efficiency in general
of a filter to retain specific test contamination in a hydraulic fluid with a specified contamination concentration under defined test conditions (CETOP RP 100). As the test method for filtration efficiency [...] multipass test according to ISO 4572 has become established. However, the results obtained with this test cannot be simply transferred to practice, as in relation to the conditions during the test there is
Downloads - Yritys
sample test report - Cover sheet Initial sample test report - Cover sheet Guideline Initial sample test report - Measurement protocol Initial sample test report - Sampling matrix Initial sample test report
Repeat accuracy (reproducibility)
error, which arises if different testers want the same individual results with the same test methods and identical test materials. Figure W 11: Repeatability