1、Designation: E 2501 07Standard Specification forLight Source Products for Inspection of FluorescentCoatings1This standard is issued under the fixed designation E 2501; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of las
2、t 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 specification provides the requirements for lightsource products intended for excitation of fluorescent materialsus
3、ed as a system for detection of defects in industrial coatings.This includes the examination of both longer wavelengthfluorescing primer coatings as well as non-fluorescent topcoatings.1.2 This specification establishes the radiometric require-ments of the light source product in terms of required w
4、ave-length range and minimum irradiance.1.3 This specification establishes safety requirements for thelight source product necessary to ensure the product will notpose a threat to visual health.1.4 The values stated in SI units are to be regarded asstandard. No other units of measurement are include
5、d in thisstandard.1.5 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 and health practices and determine the applica-bility of regulatory limitations prior to u
6、se.2. Referenced Documents2.1 ASTM Standards:2E 284 Terminology of AppearanceE 1341 Practice for Obtaining Spectroradiometric Datafrom Radiant Sources for ColorimetryG 138 Test Method for Calibration of a SpectroradiometerUsing a Standard Source of Irradiance2.2 IEC Standards:3IEC 60825-1 Edition 1.
7、2 Safety of Laser Products Part 1:Equipment classification, requirements and users guide.3. Terminology3.1 Definitions: The definitions of terms in TerminologyE 284 are applicable to this standard.4. Significance and Use4.1 Light source products conforming to this specificationare intended to be use
8、d in conjunction with coatings speciallyformulated with fluorescent colorants as a system for the visualdetection of defects in industrial protective coatings.4.2 Visible fluorescence from the coating enhances thevisibility of coating irregularities and defects and is producedby excitation of visibl
9、e-activated fluorescent colorants in thecoating.4.3 Light source products with defined wavelength andintensity properties are required to produce adequate visiblefluorescence for easy visual location of defects.4.4 A light source product is considered to consist of a lightsource component incorporat
10、ed into an optical, electrical,mechanical, and power supply system that makes it suitable foruse in an industrial environment. The entire light sourceproduct is subject to this standard. The light source componentand any subassemblies of the light source product are notsubject to this standard4.5 Th
11、is specification is limited to light source productsproviding excitation in the range from 400 to 420 nm.5. Performance Requirements5.1 Irradiance:5.1.1 The light source shall provide a minimum irradianceof 15 W/m2at 10 cm distance from the point at which the lightexits the product.1This specificati
12、on is under the jurisdiction of ASTM Committee E12 on Colorand Appearance and is the direct responsibility of Subcommittee E12.05 onFluorescence.Current edition approved July 1, 2007. Published July 2007. Originally approvedin 2006. Last previous edition approved in 2006 as E 2501 - 06.2For referenc
13、ed 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.3Available from International Electrotechnical Commission (IEC), 3, rue de
14、Varemb, Case postale 131, CH-1211, Geneva 20, Switzerland.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.1.2 Ninety-five percent (95 %) of the output flux shall beof a wavelength in the range from 380 to 435 nm.5.2 Eye SafetyThe d
15、evice must conform to the require-ments of a Class 1 or Class 2 LED product as set out inIEC 60825-1.6. Test Method6.1 Irradiance for Section 5.1:6.1.1 Measure the light source in an environment withambient temperature between 20 and 25C. Store the lightsource and its batteries for a minimum of4hint
16、hisenvironment before turning it on.6.1.2 Turn on the light source and allow it to operatecontinuously for 30 min before measuring irradiance to allowthe light source to approach a steady state operating tempera-ture and for fresh batteries to discharge beyond high voltagestartup conditions.6.1.3 Me
17、asure irradiance using a spectroradiometer cali-brated, verified, operated in accordance with Test MethodG 138 and Practice E 1341.6.1.4 Report irradiance results in accordance with PracticeE 1341.6.1.5 Report the dimensions of the area that meet therequirements of Section 5.1.7. Certification7.1 Wh
18、en specified in the purchase order or contract, thepurchaser shall be furnished certification stating samples rep-resenting the light source have been tested and inspected asindicated in this specification and the requirements have beenmet. When specified in the purchase order or contract, a reporto
19、f the test results shall be furnished. Test reports may betransmitted to the purchaser by electronic services. The contentof the electronically transmitted document shall conform to anyexisting agreement between the purchaser and the seller.8. Keywords8.1 coating inspection; fluorescent coatings; fl
20、uorescent in-spection lightASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infri
21、ngement 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 andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standar
22、d or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your view
23、s 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).E2501072
