This document establishes methods to:
— validate equipment used to prepare secondary calibration suspensions for automatic particle counters;
— perform online secondary calibration of automatic particle counters;
— match two or more online particle counters, i.e. to count the same number of particles at a given size by two APCs associated on line;
— validate online particle counting systems with and without online dilution as used, for example, to measure the filtration efficiency of a hydra...
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ISO 11171:2016 specifies procedures for the following:
a) primary particle-sizing calibration, sensor resolution and counting performance of automatic particle counters (APCs) for liquids capable of analysing bottle samples;
b) secondary particle-sizing calibration using suspensions verified with a primary calibrated APC;
c) establishing acceptable operation and performance limits;
d) verifying particle sensor performance using a truncated test dust;
e) determining coincidence and flow rate...
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This document establishes methods for: —  validating equipment used to prepare secondary calibration suspensions for automatic particle counters; —   performing online secondary calibration of automatic particle counters; —   matching two or more online particle counters, i.e. to count the same number of particles at a given size by two APCs associated online; —   validating online particle counting systems with and without online dilution as used, for example, to measure the ...view more

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This document describes a recommended method for the interpolation of particle concentration and filter Beta Ratio data when results are not otherwise available at the desired particle sizes. It is applicable for assessing conformance with existing fluid cleanliness and filter Beta Ratio specifications whereby the specification and actual test results are provided in different units of particle size, for example, the specification is in µm(c), but the particle counts or Beta Ratio data are in un...view more

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This document provides the background for ISO 11171:2020 and the use of µm(c) as the sole means of reporting particle size for APC particle count data. It also summarizes results of the international inter-laboratory study (ILS) of its reproducibility using SRM 2806d candidate material and suspensions of Reference Material (RM) 8632a. The ILS results provided the basis for certification of SRM 2806d used for primary calibration of APC. Their implications with respect to particle counting and fil...view more

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This document specifies the code to be used in defining the quantity of solid particles in the fluid used in a given hydraulic fluid power system.

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This document specifies procedures for the following: a) primary particle-sizing calibration for particle sizes 1 µm(c) and larger, sensor resolution and counting performance of liquid automatic particle counters that are capable of analysing bottle samples; b) secondary particle-sizing calibration using suspensions verified with a primary calibrated APC; c) establishing acceptable operation and performance limits; d) verifying particle sensor performance using a test dust; e) determining coinci...view more

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This document explains the use of the two acceptable methods of reporting particle size, µm(c) and µm(b), that are defined in ISO 11171:2016. It also explains the reasons for the existence of two alternative size reporting methods and its implications with respect to particle count and filter Beta Ratio data.

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This document specifies a method for the determination of the particulate contamination level using the light extinction technique (also known as light blockage or light obscuration) either online or offline in containers. It also defines procedures for calibrating the instruments and verifying their correct operation both in the laboratory and in service. In general, the techniques described in this document are suitable for monitoring: — the general cleanliness level in hydraulic systems, — th...view more

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This document specifies a bubble-point test method applicable to filter elements used in hydraulic fluid power systems. It can be used both to verify the fabrication integrity of a filter element (by checking the absence of bubbles) and to permit the localization of the largest pore of the filter element by determining the first bubble point. NOTE Verification of fabrication integrity is used to define the acceptability of the filter elements for further use or testing. The first bubble point is...view more

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This document establishes methods to: — validate equipment used to prepare secondary calibration suspensions for automatic particle counters; — perform online secondary calibration of automatic particle counters; — match two or more online particle counters, i.e. to count the same number of particles at a given size by two APCs associated on line; — validate online particle counting systems with and without online dilution as used, for example, to measure the filtration efficiency of a hydraulic...view more

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ISO 5782-1:2017 specifies which characteristics of compressed air filters are to be included in the supplier's literature. It also specifies product-marking requirements. ISO 5782-1:2017 is applicable to compressed air filters, constructed from light alloys (aluminium, etc.), zinc diecast alloys, brass, steel and plastic, with a rated pressure of up to 1 600 kPa (16 bar) and a maximum temperature of 80 °C, designed to remove solid and liquid contaminants from compressed air by mechanical means

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ISO 18237:2017 specifies: - test equipment, test circuit and a procedure for the evaluation of the water separation capabilities of a dehydrator; - a procedure for preparing test fluid; - a procedure for obtaining and analysing the test fluid samples. ISO 18237:2017 applies only to those dehydration units that can dry a hydraulic fluid to less than 20 % of the hydraulic fluid's water saturation level at the test temperature. ISO 18237:2017 provides a test procedure that yields reproducible resul...view more

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ISO 12669 specifies a method of determining the required cleanliness level of a hydraulic system, that is, the most appropriate fluid cleanliness level for an operating hydraulic system based upon the individual requirements of that system. It is applicable to systems where the level of fluid cleanliness is expressed in accordance with ISO 4406, although conversion to other contamination coding systems is possible. It is applicable to both high and low pressure fluid power systems and also lubri...view more

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This document specifies dimensions and performance requirements for external hex and internal hex
port plugs for use with ISO 6149-1 ports.
Port plugs in accordance with this document can be used at working pressures up to 63 MPa (630 bar1)).
The permissible working pressure depends upon the plug end size, materials, design, working
conditions, application, etc.
Conformance to the dimensional information in this document does not guarantee rated performance.
Each manufacturer is expected t...
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ISO 4406:2017 specifies the code to be used in defining the quantity of solid particles in the fluid used in a given hydraulic fluid power system.

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ISO 3668:2017 specifies a procedure for evaluating differential pressure versus flow characteristics of hydraulic filters and constitutes a basis for agreement between the filter manufacturer and user. It also specifies a method for measurement of the differential pressure generated at different flow rates and viscosities by the relevant parts of a filter assembly, spin-on and any valves contained within the filter which are in the flow stream. The typical types of filter to be tested are as fol...view more

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ISO 11171:2016 specifies procedures for the following: a) primary particle-sizing calibration, sensor resolution and counting performance of automatic particle counters (APCs) for liquids capable of analysing bottle samples; b) secondary particle-sizing calibration using suspensions verified with a primary calibrated APC; c) establishing acceptable operation and performance limits; d) verifying particle sensor performance using a truncated test dust; e) determining coincidence and flow rate limi...view more

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ISO 12829:2016 specifies methods for verifying the rated fatigue life and the rated static burst pressure of the pressure-containing envelope (i.e. the filter housing) of a spin-on hydraulic filter with a disposable filter element and a finite life. Because the service life of housings for these types of filters is relatively short, a rated fatigue life of 100 000 cycles is judged sufficient for typical industrial applications.

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ISO 3601-2:2016 specifies the housing (gland) dimensions for class A O-rings for general industrial applications conforming to ISO 3601-1, as well as housing dimensions for class B O-rings used on selected metric-dimensioned hardware, e.g. fluid power cylinder bores and piston rods. These O-rings are for use in general hydraulic and pneumatic applications without and with anti-extrusion rings (back-up rings). The dimensions of the O-rings (d1 and d2), size codes (SC) and tolerances conform to IS...view more

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This International Standard specifies a method for verifying the end load rating of a hydraulic fluid
power filter element. It also verifies the ability of a hydraulic fluid power filter element to withstand the
designated axial loading imposed by installation and use.

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This Technical Report discusses the impact of changes in International Standards for particle counting,
contamination control, and filter testing.
Liquid automatic particle counters (APCs) are used in monitoring contamination levels in hydraulic
fluids, to establish component and assembly cleanliness level specifications, and in determining filter
efficiencies and particle size ratings. As a result of the replacement of ISO 4402 with ISO 11171 (APC
calibration), the replacement of ISO 4572 ...
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This International Standard specifies the content of an inspection document that specifies both the
cleanliness requirement for the specified hydraulic fluid power component and the inspection method
to be used for evaluating its cleanliness level. In addition, guidelines for relevant extraction methods
and analysis methods are given.
Determination of what constitutes as an appropriate cleanliness level requirement for any particular
component is beyond the scope of this International Stand...
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This part of ISO 3601 contains the material specification of a selection of standard elastomeric materials
(rubber) for O-rings used in general industrial applications. It also indicates the ability of the materials
to satisfy many of the requirements associated with fluid power components.
Only materials which are in universal usage are specified; other compounds are available and can be used.
The required physical properties and test methods (including test specimen) should be agreed upon
...
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ISO 3723:2015 specifies a method for verifying the end load rating of a hydraulic fluid power filter element. It also verifies the ability of a hydraulic fluid power filter element to withstand the designated axial loading imposed by installation and use.

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ISO 3601-5:2015 contains the material specification of a selection of standard elastomeric materials (rubber) for O-rings used in general industrial applications. It also indicates the ability of the materials to satisfy many of the requirements associated with fluid power components. Only materials which are in universal usage are specified; other compounds are available and can be used. The required physical properties and test methods (including test specimen) should be agreed upon between eq...view more

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ISO 18413:2015 specifies the content of an inspection document that specifies both the cleanliness requirement for the specified hydraulic fluid power component and the inspection method to be used for evaluating its cleanliness level. In addition, guidelines for relevant extraction methods and analysis methods are given. Determination of what constitutes as an appropriate cleanliness level requirement for any particular component is beyond the scope of ISO 18413:2015. ISO 12669 provides a metho...view more

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ISO/TR 16386:2014 discusses the impact of changes in International Standards for particle counting, contamination control, and filter testing. Liquid automatic particle counters (APCs) are used in monitoring contamination levels in hydraulic fluids, to establish component and assembly cleanliness level specifications, and in determining filter efficiencies and particle size ratings. As a result of the replacement of ISO 4402 with ISO 11171 (APC calibration), the replacement of ISO 4572 with ISO ...view more

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ISO 16908:2014 specifies a test procedure to thermally condition a hydraulic filter element and simulate cold start, such as that which can be encountered in mobile machinery applications. It is intended to provide a procedure that yields reproducible results and can be used prior to other filter element performance tests, such as those specified in ISO 11170.

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This International Standard defines a sequence of tests for verifying filter elements. It can be used to check their hydraulic, mechanical and separation characteristics. This International Standard is not intended to qualify a filter for a particular duty or replicate conditions of service. This can only be done by a specific test protocol developed for the purpose, including actual conditions of use (e.g. the operating fluid). The procedure in this International Standard is applicable to indiv...view more

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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low pressure conditions. This part of ISO 16589 specifies general performance tests which can be used for seal qualification purposes. Materials quality control, dynamic testing, and supplementary low temperature testing requirements are covered.

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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low pressure conditions. This part of ISO 16589 shows seal types and examples. It also specifies the nominal dimensions and tolerance of the seals, shafts and housings, as well as a dimensional identification code.

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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low pressure conditions. This part of ISO 16589 gives users of lip-type seals guidance on the careful storage and handling and proper installation of rotary shaft lip-type seals; attention is drawn to the hazards involved and ways of avoiding them are pointed out.

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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low pressure conditions. This part of ISO 16589 defines and classifies typical surface imperfections that could impair the function of the seals, and is intended as a convenience for purchasers and manufacturers in their discussions concerning the importance of these imperfections ...view more

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ISO 16589 specifies seals utilising sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low pressure conditions. This part of ISO 16589 establishes the appropriate vocabulary, where the terms and definitions given in ISO 5598 apply.

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ISO 11170:2013 defines a sequence of tests for verifying filter elements. It can be used to check their hydraulic, mechanical and separation characteristics. ISO 11170:2013 is not intended to qualify a filter for a particular duty or replicate conditions of service. This can only be done by a specific test protocol developed for the purpose, including actual conditions of use (e.g. the operating fluid). The procedure in ISO 11170:2013 is applicable to individual fluids or types of fluids that ha...view more

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ISO 3601-1:2012 specifies the inside diameters, cross-sections, tolerances and designation codes for O-rings used in fluid power systems for general industrial and aerospace applications. The dimensions and tolerances specified in ISO 3601-1:2012 are suitable for any elastomeric material, provided that suitable tooling is available.

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ISO16431:2012 defines methods to measure the cleanliness of a fluid in an assembled hydraulic fluid power system, to verify a required system cleanliness upon release of the system from the production area, and if needed, to clean the system to the required cleanliness level. The clean-up procedure specified in ISO16431:2012 is not intended to replace proper system flushing procedures; see ISO 23309 for a system flushing procedure. Components and parts used in such systems should be clean prior ...view more

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ISO/TR 15640:2011 is applicable to contamination control principles for hydraulic fluid power systems and includes guidelines for the selection and application of hydraulic filters. Although control of non-particulate contamination, e.g. air, water and chemicals, is important, and is briefly discussed, the primary focus of ISO/TR 15640:2011 is the control of particulate contamination and the selection and application of filters for that function.

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ISO 16589-2:2011 establishes the vocabulary for seals utilizing sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE) that are considered suitable for use under low-pressure conditions.

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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-3:2011 gives users of lip-type seals guidance on the careful storage and handling and proper installation of rotary shaft lip-type seals; attention is drawn to the hazards involved and ways of avoiding them are pointed out.

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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-4:2011 specifies general performance tests which can be used for seal qualification purposes. Materials quality control, dynamic testing, and supplementary low-temperature testing requirements are covered.

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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-1:2011 shows seal types and examples. It also specifies the nominal dimensions and tolerance of the seals, shafts and housings, as well as a dimensional identification code.

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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-5:2011 defines and classifies typical surface imperfections that could impair the function of the seals, and is intended as a convenience for purchasers and manufacturers in their discussions concerning the importance of these imperfections in dif...view more

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ISO 27407:2010 specifies a means of marking filters to communicate filter performance characteristics of interest to users. This marking can be used with either the standards referenced in ISO 27407:2010 or with any standard that has been harmonized with any referenced standard. ISO 27407:2010 applies to the marking of information only on the filter; the customer can request that the same information be specified on the product drawing or as part of the product packaging.

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