1、Designation:D840521Standard Test Method forEvaluating PM2.5Sensors or Sensor Systems Used inIndoor Air Applications1This standard is issued under the fixed designation D8405;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of
2、 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 test method uses a chamber system to evaluate theperformance of stationary PM2.5sensors(sensors)and particlesensor sy
3、stems(sensor systems)subjected to various testconditions,including temperature,relative humidity,PM2.5concentration,and coarse PM interferent concentration.1.1.1 This test method covers sensors and sensor systemsthat can be continuously powered and continuously operatedfor the duration of any test d
4、escribed in this method throughline power or an internal battery of sufficient output.This testmethod is not meant to evaluate sensors or sensor systemswithout these capabilities.1.1.2 This test method evaluates the performance of sensorsand sensor systems that allow users to collect data in a syste
5、micmanner to assess the capabilities and limitations of thesedevices.1.1.3 This test method is not meant to evaluate sensors orsensor systems without data storage and recording capabilities.1.1.4 This test method is not intended to evaluate indoor airquality sensors and sensor systems for purposes o
6、f regulationof outdoor air,homeland security,law enforcement or forensicactivity.1.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.3 The text of this standard references no
7、tes and footnotesthat provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of
8、the user of this standard to establish appro-priate safety,health,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 establishe
9、d in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1356 Terminology Relating to Sampling and Analysis ofAtmospheresD3670 G
10、uide for Determination of Precision and Bias ofMethods of Committee D22D6330 Practice for Determination of Volatile Organic Com-pounds(Excluding Formaldehyde)Emissions from Wood-Based Panels Using Small Environmental Chambers Un-der Defined Test ConditionsE691 Practice for Conducting an Interlaborat
11、ory Study toDetermine the Precision of a Test MethodE3080 Practice for Regression Analysis with a Single Pre-dictor Variable2.2 International Standards Organization(ISO)Standards:3ISO 8573-1 Requirements for the purity of compressed airwith respect to particles,water,and oilISO 12103-1 Road vehicles
12、 Test contaminants for filterevaluation Part 1:Arizona test dustISO 17025 General requirements for the competence oftesting and calibration laboratories2.3 United States(U.S.)Code of Federal Regulations(CFR):4Title 40 Part 53 Requirements for ambient particulate instru-ments to attain U.S.Environmen
13、tal Protection Agency(EPA)Federal Equivalent Method(FEM)designationsTitle 40 Part 58 Terminology relating to particulate matterfractions1This test method is under the jurisdiction of ASTM Committee D22 on AirQuality and is the direct responsibility of Subcommittee D22.05 on Indoor Air.Current editio
14、n approved Sept.1,2021.Published October 2021.DOI:10.1520/D8405-21.2For 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 ASTM website
15、.3Available from International Organization for Standardization(ISO),ISOCentral Secretariat,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,https:/www.iso.org.4Available from U.S.Government Publishing Office(GPO),732 N.Capitol St.,NW,Washington,DC 20401,http:/www.gpo.gov.Copyright ASTM
16、 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 of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.12.4 U.S.EPA Standards:5Method IP-10A Determination of respirable particulate mat-ter in ind