ASTM D7647-10(2018)
Standard Test Method for Automatic Particle Counting of Lubricating and Hydraulic Fluids Using Dilution Techniques to Eliminate the Contribution of Water and Interfering Soft Particles by Light Extinc
- Standard No.
- ASTM D7647-10(2018)
- Release Date
- 2018
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D7647-24
- Latest
- ASTM D7647-24
- Scope
- 1.1 This test method covers the determination of particle concentration and particle size distribution in new and inservice oils used for lubrication and hydraulic purposes. 1.2 Particles considered are in the range from 4 µm (c) to 200 µm (c) with the upper limit being dependent on the specific automatic particle counter being used. NOTE 1—For the purpose of this test method, water droplets not masked by the diluent procedure are detected as particles, and agglomerated particles are detected and reported as a single larger particle. NOTE 2—The subscript(c) is used to denote that the apparatus has been calibrated in accordance with ISO 11171. This subscript(c) strictly only applies to particles up to 50 µm. 1.3 Lubricants that can be analyzed by this test method are categorized as petroleum products or synthetic based products, such as: polyalpha olefin, polyalkylene glycol, or phosphate ester. Applicable viscosity range is up to 1000 mm2 /s at 40 °C. This procedure may be appropriate for other petroleum and synthetic based lubricants not included in the precision statement. 1.4 Samples containing visible particles may not be suitable for analysis using this test method. 1.5 Samples that are opaque after dilution are not suitable for analysis using this test method. 1.6 The test method is specific to automatic particle counters that use the light extinction principle and are calibrated according to the latest revision of ISO 11171. 1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D7647-10(2018) Referenced Document
- ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
- ASTM D4177 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
- ASTM D6786 Standard Test Method for Particle Count in Mineral Insulating Oil Using Automatic Optical Particle Counters*， 2023-12-01 Update
- ISO 11171 Hydraulic fluid power — Calibration of automatic particle counters for liquids*， 2022-03-18 Update
- ISO 3722 Hydraulic fluid power; Fluid sample containers; Qualifying and controlling cleaning methods
- ISO 4406 Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles*， 2020-12-31 Update
ASTM D7647-10(2018) history
- 2024 ASTM D7647-24 Standard Test Method for Automatic Particle Counting of Lubricating and Hydraulic Fluids Using Dilution Techniques to Eliminate the Contribution of Water and Interfering Soft Particles by Light Extinc
- 2018 ASTM D7647-10(2018) Standard Test Method for Automatic Particle Counting of Lubricating and Hydraulic Fluids Using Dilution Techniques to Eliminate the Contribution of Water and Interfering Soft Particles by Light Extinc
- 2010 ASTM D7647-10 Standard Test Method for Automatic Particle Counting of Lubricating and Hydraulic Fluids Using Dilution Techniques to Eliminate the Contribution of Water and Interfering Soft Particles by Light Extinction
