ASTM D 7647 : 2010
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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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
Hardcopy , PDF
17-02-2024
English
01-07-2010
Important note : Users cannot be edited or removed once added to your Multi user PDF.CONTAINED IN VOL. 05.04, 2018 Defines the determination of particle concentration and particle size distribution in new and in-service oils used for lubrication and hydraulic purposes.
| Committee |
D 02
|
| DocumentType |
Test Method
|
| Pages |
9
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy |
1.1 This test method covers the determination of particle concentration and particle size distribution in new and in-service 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 @ 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 test method 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 and health practices and determine the applicability of regulatory limitations prior to use.
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| ASTM D 7684 : 2011 : R2016 | Standard Guide for Microscopic Characterization of Particles from In-Service Lubricants |
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| ASTM D 6224 : 2016 : REDLINE | Standard Practice for In-Service Monitoring of Lubricating Oil for Auxiliary Power Plant Equipment |
| ISO 3722:1976 | Hydraulic fluid power — Fluid sample containers — Qualifying and controlling cleaning methods |
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