OLYMPUS CIX Series
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OLYMPUS’ Your Vision, Our Future Technical Cleanliness Inspection System Explanation of the International Standards for Technical Cleanliness

Most of the processing steps for cleanliness inspection are defined in company-specific and international standards. The definition of each standard varies according to the application. The international cleanliness standards specify the methods to be used for evaluating (extracting, analyzing, and reporting) the cleanliness of component parts. Standards describe not only the evaluation of the filter membranes, but also how they should be prepared. The following standards are pre-defined in the CIX system: Mainly used for Last revision Fluid used in hydraulic systems 1999 Hydraulic...

Standard: ISO 4406:1999 This international standard specifies the code to be used in defining the quantity of solid particles in the fluid used in a given hydraulic fluid power system. U Specifics • This standard refers to 1 ml of filtered fluid. • The results are based on cumulative counts. Q Particle Size Classification The maximum Feret diameter (x) is measured for each particle. All particles are classified into the following cumulative bins: U Scaling and Normalization This absolute number of particles can be scaled if the area of the filter that is scanned differs from the...

This international standard defines methods of determining the solid particle contamination of hydraulic fluids used in hydraulic fluid power systems. U Particle Size Classification The maximum Feret diameter (x) is measured for each particle. All particles are classified into the following differential bins: The absolute number of particles is counted for each class U Scaling and Normalization This absolute number of particles can be scaled if the area of the filter that is scanned differs from the flow-through area on the filter. The final counting result must be normalized to 100 ml of...

Standard: ISO 11218:1993 This international standard specifies a cleanliness classification for hydraulic fluids in airplanes, helicopters and space vehicles. Requirements for this standard are specified in SAE AS4059A. Particle Size Classification The maximum Feret diameter (x) is measured for each particle. All particles are classified into the following differential bins: Particle class name Feret diameter of particle The absolute number of particles is counted for each class Scaling and Normalization This absolute number of particles can be scaled if the area of the filter that is...

Standard: ISO 12345:2013 This international standard is concerned with the assessment of the cleanliness of the fuel injection equipment as originally supplied to the engine manufacturer. Particle Size Classification The maximum Feret diameter (x) is measured for each particle. All particles are classified into the following differential bins: Particle class name Feret diameter of particle The absolute number of particles is counted for each class Scaling and Normalization This absolute number of particles can be scaled if the area of the filter that is scanned differs from the flow-through...

Standard: ISO 14952:2003 This international standard defines analytical methods to verify the cleanliness level for parts and components used in space fluid systems. It can be used to determine the cleanliness level of precision-cleaned parts and components used in ground support equipment, launch vehicles and spacecraft. Requirements for this standard are specified in ISO 5884. Particle Size Classification The maximum Feret diameter (x) is measured for each particle. All particles are classified into the following differential bins: Particle class name Feret diameter of particle The...

Standard: ISO 16232-10:2007 (A) This international standard defines the rules and the forms of expression and presentation of the results of measurements of particulate cleanliness of components for the fluid circuits of motor vehicles. It also defines the levels of contamination of these components. This standard refers to 1000 cm2 of wetted surface of the component. Particle Size Classification The maximum Feret diameter (x) is measured for each particle. All particles are classified into the following differential bins: x > 1,000 jm The absolute number of particles is counted for each...

Standard: ISO 16232-10:2007 (N) This international standard defines the rules and the forms of expression and presentation of the results of measurements of particulate cleanliness of components for the fluid circuits of motor vehicles. It also defines the levels of contamination of these components. This standard refers to the number of particles per component. Particle Size Classification The maximum Feret diameter (x) is measured for each particle. All particles are classified into the following differential bins: Particle class name Feret diameter of particle The absolute number of...

Standard: ISO 16232-10:2007 (V) This international standard defines the rules and the forms of expression and presentation of the results of measurements of particulate cleanliness of components for the fluid circuits of motor vehicles. It also defines the levels of contamination of these components. This standard refers to 100 cm3 of wetted volume of the component. x > 1,000 jm The absolute number of particles is counted for each class Scaling and Normalization This absolute number of particles can be scaled if the scanned area of the filter differs from the flow-through area on the...

Standard: NAS 1638:1964 This international standard defines cleanliness classes for particulate contamination of hydraulic fluids. Particle Size Classification The maximum Feret diameter (x) is measured for each particle. All particles are classified into the following differential bins: Particle class name Feret diameter of particle The absolute number of particles is counted for each class Scaling and Normalization This absolute number of particles can be scaled if the scanned area of the filter differs from the flow-through area on the filter. The final counting result must be normalized...