1、Designation:D839222Standard Practice forCalibration and Verification of Direct Imaging AnalyzersUsed for Particle Size and Shape Analysis of CatalyticMaterials1This standard is issued under the fixed designation D8392;the number immediately following the designation indicates the year oforiginal ado
2、ption or,in the 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.Scope1.1 This practice covers the calibration and verification ofDynamic Imaging Analyz
3、ers(analyzers)using catalytic andnon-catalytic reference materials.The measurement range ofanalyzers covers from 500 m to 20 000 m.1.2 This practice may also be used to analyze catalyticmaterials once the analyzer has been calibrated and verified.1.3 UnitsThe values stated in SI units are to be rega
4、rdedas standard;however,English and mesh units are also accept-able with conversions provided in Appendix X3.1.4 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 safety,he
5、alth,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of Interna
6、tional Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D3766 Terminology Relating to Catalysts and CatalysisD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Te
7、chniques to Evaluate AnalyticalMeasurement System PerformanceE105 Guide for Probability Sampling of MaterialsE2589 Terminology Relating to Nonsieving Methods ofPowder Characterization2.2 DIN Standard:366141 Representation of Particle Size Distributions BasicStandard2.3 ISO Standards:49276-6 Represen
8、tation of Results of Particle Size Analysis Part 6:Descriptive and Quantitative Representation ofParticle Shape and Morphology13322-1 Particle Size Analysis Image Analysis Methods Part 1:Static Image Analysis Methods3.Terminology3.1 Reference Terminologies D3766 and E2589 for standarddefinitions.3.2
9、 Non-standard Particle Shape Definitions and Defini-tions of Terms Specific to This Standard3.2.1 aspect ratio,nequal to the particle width divided bythe particle length(see Appendix X1).3.2.2 particle convexity,na measurement,from 0 to 1,ofthe actual particle area to the area within the convex peri
10、meter(see X1.4).3.3 Non-standard Particle Size Definitions and Definitionsof Terms Specific to This Standard3.3.1 particle length,nthe maximum feret that is perpen-dicular to the particle width of the two-dimensionally imagedparticle(see Appendix X1).3.3.2 particle width,nthe minimum area bisector o
11、f thetwo-dimensionally imaged particle and signified by XMa min,minimum Martin diameter(see Appendix X1).NOTE1Imaging terminology is known to have multiple phrasingsthroughout industry.Appendix X1 and Appendix X2 describe,in detail,what these terms represent with regard to this practice.4.Summary of
12、 Practice4.1 The general principle of operation of the analyzer is thetransport of catalytic material from a loading container through1This practice is under the jurisdiction of ASTM Committee D32 on Catalystsand is the direct responsibility of Subcommittee D32.02 on Physical-MechanicalProperties.Cu
13、rrent edition approved Aug.1,2022.Published September 2022.DOI:10.1520/D8392-22.2For referenced ASTM standards,visit 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
14、 ASTM website.3Available from Deutsches Institut fr Normung e.V.(DIN),Am DIN-Platz,Burggrafenstrasse 6,10787 Berlin,Germany,http:/www.din.de.4Available from International Organization for Standardization(ISO),ISOCentral Secretariat,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,https:
15、/www.iso.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment
16、of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1a measurement zone where the particles can be dynamicallyimaged in order to determine their size(length and width)andshape.See Fig.1 for a general diagram of the analyzer.4.2 Catalytic materials are varied in shape,depending onapplication,and include spherical,or near spherical,particles,cylindrical and multilobe particles.No particle standards existfor the purp
