ASTM D7619-2012 8750 Standard Test Method for Sizing and Counting Particles in Light and Middle Distillate Fuels by Automatic Particle Counter《通过自动颗粒计数器在轻质和中间馏出燃料颗粒的粒度测量和计数方法的标准试验方.pdf
《ASTM D7619-2012 8750 Standard Test Method for Sizing and Counting Particles in Light and Middle Distillate Fuels by Automatic Particle Counter《通过自动颗粒计数器在轻质和中间馏出燃料颗粒的粒度测量和计数方法的标准试验方.pdf》由会员分享,可在线阅读,更多相关《ASTM D7619-2012 8750 Standard Test Method for Sizing and Counting Particles in Light and Middle Distillate Fuels by Automatic Particle Counter《通过自动颗粒计数器在轻质和中间馏出燃料颗粒的粒度测量和计数方法的标准试验方.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D7619 12Standard Test Method forSizing and Counting Particles in Light and Middle DistillateFuels, by Automatic Particle Counter1, 2This standard is issued under the fixed designation D7619; the number immediately following the designation indicates the year oforiginal adoption or, in t
2、he case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This test method uses a specific automatic particlecounter2(APC) to count and measur
3、e the size of dispersed dirtparticles, water droplets and other particles, in light and middledistillate fuel, and bio fuels such as biodiesel and biodieselblends, in the overall range from 4 m(c) to 100 m(c) and inthe size bands $4 m(c), $6 m(c), and $14 m(c).NOTE 1ASTM specification fuels falling
4、within the scope of this testmethod include Specifications: D975 grades 1D and 2D, D3699, D4814(see 14.1.1.1), D6751, D6985, D7467 and distillate grades of D396 andD2880.NOTE 2For the purposes of this test method, water droplets arecounted as particles, and agglomerated particles are detected and co
5、untedas a single larger particle. Dirt includes biological particles. Although theprojected area of a particle is measured, this is expressed as the diameterof a sphere for the purposes of this test method.NOTE 3The notation (c), used with particle sizes, is used to denotethat the apparatus has been
6、 calibrated in accordance with ISO 11171.Strictly this only applies to particles up to 50 m.NOTE 4This test method may be used for particle sizes bands up to100 m(c), however the precision has only been determined for the sizebands $4 m(c), $6 m(c), and $14 m(c). All measurements are permL.1.2 The v
7、alues stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate
8、safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3D396 Specification for Fuel OilsD975 Specification for Diesel Fuel OilsD2880 Specification for Gas Turbine Fuel OilsD3699 Specification for KerosineD4057 Pra
9、ctice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD4814 Specification for Automotive Spark-Ignition EngineFuelD5854 Practice for Mixing and Handling of Liquid Samplesof Petroleum and Petroleum ProductsD6300 Practice fo
10、r Determination of Precision and BiasData for Use in Test Methods for Petroleum Products andLubricantsD6751 Specification for Biodiesel Fuel Blend Stock (B100)for Middle Distillate FuelsD6985 Specification for Middle Distillate Fuel OilMilitary Marine Applications4D7467 Specification for Diesel Fuel
11、 Oil, Biodiesel Blend(B6 to B20)2.2 ASTM Adjuncts:5ADJ6300 D2PP Determination of Precision and Bias datafor Use in Test Methods for Petroleum Products2.3 ISO Standards:6ISO 11171 Hydraulic Fluid PowerCalibration of Auto-matic Particle Counters for LiquidsISO 4406 Hydraulic Fluid PowerFluidsMethod fo
12、rCoding Level of Contamination by Solid ParticlesISO 12103-A1 Specification for Ultra Fine Test Dust(UFTD)1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.14 on Stability and Cleanliness of Liqui
13、d Fuels.Current edition approved April 15, 2012. Published August 2012. Originallyapproved in 2010. Last previous edition approved in 2010 as D761910. DOI:10.1520/D7619-12.2The sole source of the apparatus known to the committee at this time isSETA-AvCount, available from Stanhope-Seta, London Stree
14、t, Chertsey, SurreyKT16 8AP UK. If you are aware of alternative suppliers, please provide thisinformation to ASTM International Headquarters. Your comments will receivecareful consideration of a meeting of the responsible technical committee,1whichyou may attend.3For referenced ASTM standards, visit
15、 the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.5Ou
16、t of print.6Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2
17、959, United States.ISO 12103-A3 Specification for Medium Test Dust (MTD)3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 particles, nsolid particles and dispersed water drop-lets which are detected and counted by this test method.3.1.2 particle count, nthe sum of the number of
18、solidparticles and dispersed water droplets.3.1.3 particle size, m(c), nthe projected area equivalentdiameter of spherical particles passing through the detectingcell in accordance with ISO 11171.3.1.4 particle size cumulative count, nthe total number ofparticles per mL, in size bands,$4 m(c),$6 m(c
19、), and$14m(c),3.1.4.1 DiscussionAutomatic particle counters may alsocount the total number of particles per mL, in size bands, inaddition to those in 3.1.4,upto$100 m.3.1.5 ISO Codes, na standard method for coding the levelof contamination by particles.3.1.5.1 DiscussionResults are expressed by ISO
20、Codes asspecified by ISO 4406. These codes are written in the form ofx/y/z, where x, y and z are ISO Codes equivalent to thecumulative counts, per mL, for particle size bands $4 m(c),$6 m(c), and $14 m(c) respectively. An example of this isgiven in Appendix X1.NOTE 5All particle counts are per mL.3.
21、1.6 coincidence error limit, nthe highest concentrationof ISO ultrafine test dust (ISO 12103-A1 or ISO UFTD) thatcan be counted with an automatic particle counter with lessthan 5 % error resulting from the presence of more than oneparticle in the sensor/laser optical path at a time.3.1.7 test specim
22、en, nan aliquot of the test sample. (SeeSection 10.)4. Summary of Test Method24.1 The optical measurement cell comprises a light sourceand an optical sensor. The principle of operation is themeasurement of laser light obscuration. Particles/droplets en-trained within the test specimen cast shadows o
23、n the opticalsensor causing a reduction of the output voltage of the sensor.The voltage drop is a function of the particle/droplet size. Eachdetected particle is counted, sized and recorded. Upon comple-tion of the test the software calculates and displays the numberof obscuration events for each of
24、 the predetermined size bands.4.2 The test specimen is mixed in its container to suspendthe particles. Upon initiation of a test, the automatic particlecounter (APC) draws the test specimen directly from a testspecimen container (see Fig. A1.1). The test sequence com-mences by flushing the optical m
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