1、Designation: E 2072 09An American National StandardStandard Specification forPhotoluminescent (Phosphorescent) Safety Markings1This standard is issued under the fixed designation E 2072; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisi
2、on, 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification co
3、vers minimum photometric require-ments for newly applied photoluminescent (phosphorescent)safety materials used to provide supplemental markings ofescape routes, emergency equipment, and obstructions alongthe escape route. (see also Test Method E 2073 and GuideE 2030).1.2 This specification establis
4、hes minimum luminance val-ues for photoluminescent (phosphorescent) markings.1.3 This specification applies to all types of photolumines-cent (phosphorescent) markings, including but not limited toplastics, coatings, ceramics, films, etc.1.4 This specification does not cover potentially diminishedpe
5、rformance due to wear and tear and aging.1.5 This specification applies only to photoluminescent(phosphorescent) markings emitting the majority of spectralenergy within the 515 to 535 nanometer range.1.6 When reference is made regarding photoluminescencein the text of this standard, it implies phosp
6、horescence.1.7 The values stated in SI units are the standard. The valuesgiven in parentheses are provided for information purposesonly.2. Referenced Documents2.1 ASTM Standards:2E 284 Terminology of AppearanceE 1316 Terminology for Nondestructive ExaminationsE 2030 Guide for Recommended Uses of Pho
7、toluminescent(Phosphorescent) Safety MarkingsE 2073 Test Method for Photopic Luminance of Photolumi-nescent (Phosphorescent) Markings3. Terminology3.1 Definitions of terms in Terminology E 284 and Termi-nology E 1316 are applicable to this specification.4. Performance Requirements4.1 Optical Require
8、ments:4.1.1 Luminance in a Test LaboratoryThe photopic lumi-nance of all three specimens of the photoluminescent marking,measured in compliance with Test Method E 2073, shall be notless than: 20.0 mcd/m2at 10 min after activation has ceased;and 2.8 mcd/m2at 60 min after activation has ceased.5. Inst
9、allation Site5.1 On-Site LuminanceThe photopic luminance of on-siteinstalled photoluminescent markings shall be measured incompliance with Test Method E 2073. The on-site lightingshall be used as activation. Markings must be a minimum of25.4-mm (1-in.) width. For markings of width W, the requiredpho
10、topic luminance shall, at all times, be not less than:1500/W mcd/m2at 10 min after activation has ceased220/W mcd/m2at 60 min after activation has ceasedFor this calculation, the width W is measured in millimetres.Examples of Required Luminance ValuesWidth of Marking 10 min afteractivation has cease
11、d60 min afteractivation has ceasedMinimum 25.4mm 59.06 mcd/m28.66 mcd/m240mm 37.50 mcd/m25.50 mcd/m275mm 20.00 mcd/m22.93 mcd/m2100mm 15.00 mcd/m22.20 mcd/m25.2 ActivationThe required recharging activation level forphotoluminescent safety markings depends on the ambientluminance level, the type of l
12、ight source utilized, and theduration of exposure to the activating light source. Consultmanufacturers for performance levels under various lightingconditions.6. Keywords6.1 escape routes; luminance; photoluminescent safetymarkings1This specification is under the jurisdiction of ASTM Committee E12 o
13、n Colorand Appearance and is the direct responsibility of Subcommittee E12.13 onPhotoluminescent Safety Markings.Current edition approved July 1, 2009. Published July 2009. Originally approvedin 2000. Last previous edition approved in 2004 as E 2072 04.2For referenced ASTM standards, visit the ASTM
14、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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United
15、States.APPENDIX(Nonmandatory Information)X1. LUMINANCE COMPARISON FOLLOWING DIFFERENT ILLUMINATION CONDITIONSX1.1 In 5.1, On-Site Luminance, Specification E 2072requires luminance values at 10 and 60 min. after on-siteactivation has ceased. These values are to be measured at theinstallation site, fo
16、llowing Test Method E 2073.X1.2 Accomplishing the required luminance values de-pends on a variety of factors, including but not limited to, thetype of activating light source, the intensity of illumination(lx/fc) on the marking surface, the color temperature ofillumination (K, Kelvin), the length of
17、 illumination and theambient temperature, to mention a few factors.X1.3 How different the luminance results may be, depend-ing on changing illumination conditions, is shown in TableX1.1. The luminance values in the table are averages forrandomly selected products. Results will vary for othersamples
18、and other activation conditions.TABLE X1.1 Influence of Different Illumination Conditions on the LuminanceActivation ConditionsXenon1000 lx (92.9 fc);5 min;approx. 6500 KFluorescent21.6lx(2fc);120 min;4000 K 4500 KFluorescent10.8lx(1fc);60 min;4000 K 4500 KFollowingActivationLuminance in mcd/m2Sampl
19、e A 10 min 604.0 77.1 29.360 min 88.3 25.1 9.790 min 55.0 17.7 6.9Sample B 10 min 194.7 37.9 17.260 min 26.6 9.8 4.890 min 16.3 6.6 3.2Sample C 10 min 43.3 14.4 8.260 min 6.0 3.2 2.090 min 3.7 2.1 1.4Sample D 10 min 53.6 15.7 8.560 min 7.1 3.7 2.190 min 4.3 2.4 1.4Sample E10 min 284.5 62.2 29.360 mi
20、n 37.2 15.5 8.390 min 22.3 10.8 5.5Sample F 10 min 137.7 40.8 22.560 min 19.1 9.4 5.490 min 11.9 6.5 3.7Sample G 10 min 168.7 53.0 29.960 min 24.7 12.4 7.390 min 15.3 8.1 4.9Note: Testing was performed by one laboratory. This laboratory measured each sample thrice with the 3 different activation con
21、ditions. The 3 results obtained peractivation condition were added, then divided by 3 and the resulting average is given above.E2072092ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this stand
22、ard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andi
23、f not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, wh
24、ich you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).E2072093
