ImageVerifierCode 换一换
格式:PDF , 页数:11 ,大小:115.23KB ,
资源ID:189173      下载积分:9 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。 如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【https://www.wnwk.com/docdown/189173.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: QQ登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ASTM_F_328_-_98_2003.pdf)为本站会员(益****师)主动上传,蜗牛文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知蜗牛文库(发送邮件至admin@wnwk.com或直接QQ联系客服),我们立即给予删除!

ASTM_F_328_-_98_2003.pdf

1、Designation:F 328 98(Reapproved 2003)Standard Practice forCalibration of an Airborne Particle Counter UsingMonodisperse Spherical Particles1This standard is issued under the fixed designation F 328;the number immediately following the designation indicates the year oforiginal adoption or,in the case

2、 of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers procedures for calibrating anddetermining performance of an optical discrete

3、 airborne par-ticle counter(DAPC)when presented with a challenge aerosolof near-monodisperse spherical particles.The practice is di-rected towards determination of accuracy and resolution of theDAPC for particles which have entered the sampling inlet ofthe DAPC.Consideration of inlet sampling effici

4、ency is notpart of this practice.1.2 The procedures covered here include inlet sample flowrate,zero count level,particle sizing accuracy,particle sizingresolution,particle counting efficiency,and particle concentra-tion limit.1.3 The particle size parameter that is reported is theequivalent optical

5、diameter based on projected area of aparticle of known refractive index which is suspended in air.The minimum diameter that can be reported by a DAPC isnormally specified by the manufacturer and the maximumdiameter that can be reported for a single sample is determinedby the dynamic range of the DAP

6、C being used.Typicalminimum diameters are in the range from approximately 0.05m to 0.5 m and a typical dynamic range specification will bebetween 10 to 1 and 50 to 1.1.4 The counting rate capability of the DAPC is limited bytemporal coincidence for the specific instrument and by themaximum counting

7、rate capability of the electronic sizing andcounting circuitry.Coincidence is defined as the simultaneouspresence of more than one particle within the DAPC opticallydefined sensing zone at any time.The coincidence limit is astatistical function of the airborne particle concentration andthe sensing z

8、one volume(1).2This limitation may be modifiedby the presence of particles with dimension so large as to be asignificant fraction of the sensing zone dimension(2).3Thesaturation level or maximum counting rate of the electroniccounting circuitry shall be specified by the manufacturer and isalways gre

9、ater than the DAPC counting rate for the challengeaerosol used for any portion of this practice.1.5 Calibration in accordance with all parts of this practicemay not be required for routine field calibration of a DAPCunless significant changes have been noted in operation of theDAPC or major DAPC com

10、ponent repairs or replacementshave been made.In that situation,the DAPC should be takento a suitable metrology facility for complete calibration,following necessary repairs or modifications.Normally,theroutine field calibration may consist of determination of inletflow rate,zero count level,and part

11、icle sizing accuracy.TheDAPC functions to be calibrated shall be field or metrologyfacility calibrations shall be determined by agreement betweenpurchaser and user,but shall not exceed 12 months,unlessDAPC stability for longer periods is verified by measurementsin accordance with this practice.1.6 T

12、his 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2

13、.1 ASTM Standards:D 1193 Specification for Reagent Water4D 1356 Terminology Relating to Sampling and Analysis ofAtmospheres5E 20 Practice for Particle Size Analysis of Particulate Sub-stances in the range of 0.2 to 75 m by Optical Micros-copy6D 3195 Practice for Rotameter Calibration52.2U.S.Federal

14、Standard:U.S.Federal Standard 209E,Airborne Particulate Cleanli-ness Classes in Cleanrooms and Clean Zones72.3Japanese1This practice is under the jurisdiction ofASTM Committee E29 on Particle andSpray Characterization and is the direct responsibility of Subcommittee E29.02 onNon-Sieving Methods.Curr

15、ent edition approved June 10,1998.Published December 1998.Lastprevious edition F 328-80(1998).2Jaenicke,R.,“The Optical Particle Counter:Cross Sensitivity and Coincidence:Journal of Aerosol Science Vol.3,1972,pp.95-111.3Knapp,J.Z.and Abramson,L.R.,“A New Coincidence Model for SingleParticle Counters

16、.I.Theory and Experimental Verification”Journal of Pharmaceu-tical Science and Technology,Vol.48,1994,pp.255-294.4Annual Book of ASTM Standards,Vol 11.01.5Annual Book of ASTM Standards,Vol 11.03.6Annual Book of ASTM Standards,Vol 14.02.7Available from U.S.General Services Administration,Federal Supply ServiceStandardization Division,Washington,DC 20406.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.3.Terminology3.1 For definitions of

copyright@ 2008-2023 wnwk.com网站版权所有

经营许可证编号:浙ICP备2024059924号-2