Standard Test Method for Sizing and Counting Particulates in Middle Distillate Fuels and Biodiesel Blend (B6 to B20) Using Continuous Flow and Bottle Sampler Automatic Particle Condition Monitors (Includes all amendments and changes 3/24/2021).Name übersetzen
NORM herausgegeben am 1.3.2021
Bezeichnung normen: ASTM D8166-21a
Ausgabedatum normen: 1.3.2021
Zahl der Seiten: 8
Gewicht ca.: 24 g (0.05 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
automatic particle counting, automotive diesel, aviation, biodiesel blends, fuel cleanliness, gas oil, kerosene, marine diesel, turbine fuel,, ICS Number Code 75.160.20 (Liquid fuels)
|Significance and Use|
5.1This test method is intended for use in the laboratory or in the field to evaluate the cleanliness of distillate fuels, and liquid biofuels, such as biodiesel and diesel blends. This specific test method and the precision statement applies to off-line analysis.
Note 4:These PCMs can be used for high pressure on-line applications as well, however the repeatability (r) and reproducibility (R) for on-line application were not established.
5.2An increase in particulate counts can indicate a change in the fuel condition caused for example by contamination during storage or transfer. Potential causes of particulates formation during storage could be fuel-degradation products, as described in Specification , Appendix X3.
5.3High levels of particles can cause filter blockages (especially when the particles are close in size to the filter porosity rating) and have a serious impact on the life of pumps, injectors, pistons, and other moving parts. Knowledge of particle size in relation to the metallurgy can provide vital information, especially if the hardness of particles is also known from other sources.
5.4This test method specifies a minimum requirement for reporting measurements in particle size bands ( ). Some specific applications may require measurements in other particle size bands. The particle count from the test should be carefully interpreted by the user as it can potentially over-state risk of abrasive damage or filter blocking due to counting water droplets as well as hard dirt particles.
5.5In situations where there is a requirement for the calibration of the apparatus to be in accordance with ISO 11171, Test Methods , IP 565, or IP 577 should be used.
1.1This test method uses specific automatic particle condition monitors (PCMs) to count and measure the size of dispersed dirt particles, water droplets and other particulates, in middle distillate fuel, in the overall range from 4m to 70m and in the size bands ?4m, ?6m, ?14m, and ?30m.
1.2This test method has interim repeatability precision only, see Section for more information.
Note 1:ASTM specification fuels falling within the scope of this test method include Specifications: , , , , MIL-DTL-83133, MIL-DTL-5624, and distillate grades of and .
Note 2:For the purposes of this test method, water droplets are counted as particles, and agglomerated particles are detected and counted as a single larger particle. Dirt includes microbial particulates. Although the projected area of a particle is measured, this is expressed as the diameter of a circle for the purposes of this test method. The detector is unable to distinguish between dirt and water particles.
Note 3:This test method may be used for particle sizes bands up to 70m, however the interim repeatability has only been determined for the size bands ?4m, ?6m, and ?14m. All measurements are counts per millilitre.
1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4This 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.
1.5This 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.
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