International Standard
ISO 11500:2022
Hydraulic fluid power — Determination of the particulate contamination level of a liquid sample by automatic particle counting using the light-extinction principle
Reference number
ISO 11500:2022
Edition 3
International Standard
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ISO 11500:2022
Published (Edition 3, 2022)

ISO 11500:2022

ISO 11500:2022
CHF 129
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This document specifies an automatic particle counting procedure for determining the number and sizes of particles present in hydraulic-fluid bottle samples of clear, homogeneous, single-phase liquids using an automatic particle counter (APC) that works on the light-extinction principle.

This document is applicable to the monitoring of:

a)       the cleanliness level of fluids circulating in hydraulic systems;

b)       the progress of a flushing operation;

c)        the cleanliness level of support equipment and test rigs;

d)       the cleanliness level of packaged stock fluid.

NOTE            Measurements can be made with particles suspended in the original liquid or in a sample of the liquid diluted with a compatible liquid when APC coincidence error limits are exceeded.

General information

  •  : Published
     : 2022-12
    : International Standard published [60.60]
  •  : 3
     : 20
  • ISO/TC 131/SC 6
  • RSS updates

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