This SAE Aerospace Recommended Practice (ARP) provides procedures for assuring cleanliness of sampling equipment, for performing the sampling process, and for measuring and reporting the sample particle count. The ARP gives procedures for cleaning sample bottles, when used, and recommends the solvents to be applied and how these solvents should be prepared. Requirements for the selection of the sampling point, sampling method, and sampling frequency are also specified. This ARP also recommends three measuring methods for determining the level of solid particle contamination of hydraulic fluids used in aerospace hydraulics. These are: a. on-line automatic particle counting; b. automatic particle counting method using bottle samples; and c. microscopic particle count method using bottle samples.
SAE ARP5376B-2010 Referenced Document
ISO 11171:1999 Hydraulic fluid power - Calibration of automatic particle counters for liquids
ISO 11500:2008 Hydraulic fluid power - Determination of the particulate contamination level of a liquid sample by automatic particle counting using the light-extinction principle
ISO 11943:1999 Hydraulic fluid power - On-line automatic particle-counting systems for liquids - Methods of calibration and validation
ISO 3722:1976 Hydraulic fluid power; Fluid sample containers; Qualifying and controlling cleaning methods
ISO 4407:2002 Hydraulic fluid power - Fluid contamination - Determination of particulate contamination by the counting method using an optical microscope
SAE ARP4285-2001 Aerospace - Evaluation of Particulate Contamination in Hydraulic Fluid - Membrane Procedure
SAE ARP598 PROCEDURE FOR THE DETERMINATION OF PARTICULATE CONTAMINATION OF HYDRAULIC FLUIDS BY THE PARTICLE COUNT METHOD
SAE AS4059E-2005 (R) Aerospace Fluid Power - Cleanliness Classification for Hydraulic Fluids
SAE ARP5376B-2010 history
2021SAE ARP5376C-2021 Methods, Locations and Criteria for System Sampling and Measuring the Solid Particle Contamination of Hydraulic Fluids
2010SAE ARP5376B-2010 Methods, Locations and Criteria for System Sampling and Measuring the Solid Particle Contamination of Hydraulic Fluids
2003SAE ARP5376A-2003 Methods@ Locations and Criteria for System Sampling and Measuring the Solid Particle Contamination of Hydraulic Fluids
1998SAE ARP5376-1998 Methods@ Locations and Criteria for System Sampling and Measuring the Solid Particle Contamination of Hydraulic Fluids