ISO 5011:2014 pdf download

10-26-2020 comment

ISO 5011:2014 pdf free download.Inlet air cleaning equipment for internal combustion engines and compressors — Performance testing.
ISO 5011:2014 establishes and specifies uniform test procedures, conditions, equipment, and a performance report to permit the direct laboratory performance comparison of air cleaners.
ISO 5011:2014 is applicable to air cleaners used on internal combustion engines and compressors generally used in automotive and industrial applications.
Measurement accuracy and standard conditions
4.1 Measurement accuracy
Measure the air flow rate to within 2 of the actual value, except for the variable air flow test when accuracy may be +2 of the maximum value of the cyclic flow rate through the cleaner.
Measure the differential pressure and restriction to within 25 Pa of the actual value.
Measure the temperature to within 0, 5 @ C of the actual value.
Measure the mass to within 1% of the actual value except where noted.
Measure the relative humidity(RH) with an accuracy of# 2 RH.
Measure the barometric pressure to within 3 hPa
The measurement equipment shall be calibrated at regular intervals to ensure the required accuracy.
5.1.2 Preparation
Before using the test dust, a quantity sufficient to cover the test requirements shall be mixed in a sealed container for a minimum of 15 min. The test dust shall then be allowed to become acclimatised to a constant mass under the prevailing test conditions.
NOTE: To ensure a constant rate of dust feed with some dust feeders, it may be found necessary to heat the dust prior to being fed to the injector.
The test results of an air cleaner will be affected by the relative humidity of the air passing through it and the results of otherwise identical tests carried out near the two extremes of the permitted range of relative humidity may not be directly comparable. The tests should be conducted within the narrowest range of temperature and humidity possible.

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