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1、INTERNATIONAL STANDARD ISO 17514 First edition 2004-12-01 Reference number ISO 17514:2004(E) ISO 2004 Time-measuring instruments Photoluminescent deposits Test methods and requirements Instruments de mesure du temps Dpts photoluminescents Mthodes dessai et exigences ISO 17514:2004(E) ii ISO 2004 All
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6、r body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO 17514:2004(E) ISO 2004 All rights reserved iii Foreword ISO (the International Organization
7、 for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has
8、the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Intern
9、ational Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publicati
10、on as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent right
11、s. ISO 17514 was prepared by Technical Committee ISO/TC 114, Horology, Subcommittee SC 5, Luminescence. . iv INTERNATIONAL STANDARDISO 17514:2004(E) ISO 2004 All rights reserved 1 Time-measuring instruments Photoluminescent deposits Test methods and requirements 1Scope This International Standard sp
12、ecifies the test methods of various aspects of the photoluminescent deposits applied to time-measuring instruments, together with the requirements related to them. 2Normative references The following referenced documents are indispensable for the application of this document. For dated references, o
13、nly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3157:1991, Radioluminescence for time measurement instruments Specifications 3Terms and definitions For the purposes of this document, the following terms and
14、definitions apply. 3.1 photoluminescent deposit non-radioactive substance applied to a support, which is able to accumulate energy and release it as light 3.2 luminance ratio of the light intensity to the surface unit of emission for a remote observer NOTEThis is expressed as nanocandelas per square
15、 centimetre (). 3.3 luminance degradation coefficient decrease of luminance as a function of time 3.4 legibility ability of the luminescent item to be seen distinctly 3.5 legibility limit minimum luminous intensity with which the luminescent item can be seen distinctly 3.6 luminous intensity the lig
16、ht intensity for a remote observer NOTEThis is expressed in ncd. ncd/cm2 ISO 17514:2004(E) 2 ISO 2004 All rights reserved 4Test methods and requirements 4.1Tests on sample 4.1.1Test sample of the photoluminescent deposit shall be applied evenly to a surface area of at the end of a white-coated metal
17、lic support. The white colour shall be the safety white No. 9003 of the RAL (Reichsausschuss fr Lieferbedingungen) colour range. 4.1.2Colours The standardized colours shall be those defined in 4.2.1 of ISO 3157:1991. Checking of colour shall be done by visual examination in daylight, not in direct s
18、unlight. Measurements according to CIE 1976 L*a*b* are a possible alternative. 4.1.3Luminous intensity and luminance Luminous intensity of the test sample shall be checked according to the following procedures: a)Store the test sample at ambient temperature for at least in the dark. b)Irradiate the
19、test sample under the D65 light source at for or for , and then store it in the dark. c)Measure the luminous intensity of the test sample , and after its storage. If the time required for reaching the legibility limit or the luminance degradation coefficient is needed, the curve may be extrapolated
20、down to a luminance of . A photometer shall be used for the measurement. Throughout the test periods b) and c), the ambient temperature shall be and the relative humidity shall be . 4.1.4Ageing resistance Ageing resistance of the test sample shall be checked according to the following procedures: a)
21、Measure the luminous intensity of the test sample according to 4.1.3. b)Expose the test sample to UV light, humidity and temperature as described in 4.4.2 of ISO 3157:1991. The duration of the exposure shall be extended to . c)Visually inspect the test sample; no discoloration, crack, damage, breaka
22、ge or exfoliation shall be allowed. d)Measure again the luminous intensity (according to 4.1.3) after of storage in the dark. The luminous intensity loss shall be less than . 4.1.5High/low temperature resistance High/low temperature resistance of the test sample shall be checked according to the fol
23、lowing procedures: a)Measure the luminous intensity of the test sample according to 4.1.3. b)Store the test sample in the dark at and relative humidity for . c)Store the test sample in the dark at for ; the time to pass from to shall be at least . (301)mg(10,03)cm2 8 h 200 lx30 min400 lx20 min 30 mi
24、n 90 min180 min 40 ncd/cm2 (232) C (5015)% 48 h 24 h 10 % (805) C (5015) %1 h (205) C 1 h(805) C (205) C 30 min ISO 17514:2004(E) ISO 2004 All rights reserved 3 d)Visually inspect the test sample; no discoloration, crack, damage, breakage or exfoliation shall be allowed. e)Measure again the luminous
25、 intensity (according to 4.1.3). The luminous intensity loss shall be less than . 4.2Test on components 4.2.1General While the test is intended to be carried out for a set of components, it may be carried out for only one component or for a set of components or for a complete time-measuring instrume
26、nt. 4.2.2Legibility Legibility of a photoluminescent deposit-coated component shall be checked according to the following procedures: a)Store the photoluminescent deposit-coated component at ambient temperatures for at least in the dark. b)Irradiate the photoluminescent deposit-coated component unde
27、r the D65 light source at for or at for , and then store it in the dark. c)Visually inspect the photoluminescent deposit-coated component for its legibility in the darkroom after a storage, then every hour. The legibility criteria shall be: 1)Hour and minute hands shall be clearly identified (seen a
28、nd distinguished). 2)The 12 oclock direction on the dial shall be clearly identified (seen and distinguished). The legibility limit shall comply with the luminous intensity measured by ncd specified in d), e) and f) of 3.2.1 of ISO 3157:1991 after the prescribed time. Throughout the test periods b)
29、and c), the ambient temperature shall be and the relative humidity shall be . Legibility can depend on visual acuity of the inspector. In this case, a photometer shall be used for the measurement. It is recommended that the inspector enter the dark room at least before attempting the visual inspecti
30、on. Recommended distances necessary for visual inspection are for watches, for table clocks and for wall clocks. 4.2.3Adhesion Adhesion of the photoluminescent deposit on the components shall be checked through visual inspections before and after the test to be run according to 4.5.1 and 4.5.2 of IS
31、O 3157:1991. There shall be no cracks, damages, breakage or exfoliation in the photoluminescent deposit. NOTEThe adhesive tape test described in ASTM D3359-97 is often used as a practical adhesion test. 4.2.4Test on empty cavities The tests defined in 4.1.4 and 4.1.5 may be used in some specific cas
32、es, particularly when the photoluminescent deposits fill empty cavities. 10 % 8 h 200 lx30 min 400 lx20 min 3 h (232) C (5015)% 10 min 25 cm50 cm 150 cm ISO 17514:2004(E) 4 ISO 2004 All rights reserved Annex A (informative) Test report The test report should include at least the following informatio
33、n: a)identification of the sample, including origin, date of receipt and form; b)sampling method; c)reference to this International Standard; d)measurement values and observations; e)any deviation from the test procedures, if necessary; f)any unusual events observed during the inspection; g)date of the test; h)signature of the operator. ISO 17514:2004(E) ISO 2004 All rights reserved 5 Bibliography 1ASTM D3359-97, Standard test methods for measuring adhesion by tape test ISO 17514:2004(E) ICS 39.040.01 Price based on 5 pages ISO 2004 All rights reserved