1、BSI Standards Publication BS ISO 9022-7:2015 Optics and photonics Environmental test methods Part 7: Resistance to drip or rainBS ISO 9022-7:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 9022-7:2015. It supersedes BS ISO 9022-7:2005 which is withdrawn.
2、 The UK participation in its preparation was entrusted to Technical Committee CPW/172, Optics and Photonics. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Use
3、rs are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 87919 7 ICS 37.020 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority
4、of the Standards Policy and Strategy Committee on 31 March 2015. Amendments/corrigenda issued since publication Date T e x t a f f e c t e d ISO 2015 Optics and photonics Environmental test methods Part 7: Resistance to drip or rain Optique et photonique Mthodes dessais environnementales Partie 7: R
5、sistance au ruissellement ou la pluie INTERNATIONAL STANDARD ISO 9022-7 Third edition 2015-03-01 Reference number ISO 9022-7:2015(E)BS ISO 9022-7:2015ISO 9022-7:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015 All rights reserved. Unless otherwise specified, no part of th
6、is publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in t
7、he 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 SwitzerlandBS ISO 9022-7:2015ISO 9022-7:2015(E)Foreword iv Introduction vi 1 Scope . 1 2 Normative references 1 3 Gene
8、ral information and test conditions 1 4 Conditioning 1 4.1 Conditioning method 72: Drip . 1 4.2 Conditioning method 73: Steady rain . . 2 4.3 Conditioning method 74: Driving rain 2 5 Procedure. 2 5.1 General . 2 5.2 Preconditioning 2 5.3 Recovery . 2 5.4 Final test . 2 6 Environmental test code . 3
9、7 Specification 8 Annex A (informative) Explanatory notes . 9 ISO 2015 All rights reserved iii Contents PageBS ISO 9022-7:2015ISO 9022-7:2015(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of p
10、reparing 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 the right to be represented on that committee. International organizations, governmental and non-governmental,
11、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. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/
12、IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibilit
13、y 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 rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of pate
14、nt declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as info
15、rmation about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 172, Optics and photonics, Subcommittee SC 1, Fundamental standards. This third edition cancel
16、s and replaces the second edition (ISO 9022-7:2005), of which it constitutes a minor revision. ISO 9022 consists of the following parts, under the general title Optics and photonics Environmental test methods: Part 1: Definitions, extent of testing Part 2: Cold, heat and humidity Part 3: Mechanical
17、stress Part 4: Salt mist Part 6: Dust Part 7: Resistance to drip or rain Part 8: High internal pressure, low internal pressure, immersion Part 9: Solar radiation and weathering Part 11: Mould growth Part 12: Contamination Part 14: Dew, hoarfrost, ice Part 17: Combined contamination, solar radiation
18、Part 20: Humid atmosphere containing sulfur dioxide or hydrogen sulfideiv ISO 2015 All rights reservedBS ISO 9022-7:2015ISO 9022-7:2015(E) Part 22: Combined cold, dry heat or temperature change with bump or random vibration Part 23: Low pressure combined with cold, ambient temperature and dry and da
19、mp heat ISO 2015 All rights reserved vBS ISO 9022-7:2015ISO 9022-7:2015(E) Introduction Optical instruments are affected during their use by a number of different environmental parameters which they are required to resist without significant reduction in performance and to remain within defined spec
20、ifications. The type and severity of these parameters depend on the conditions of use of the instrument (for example, in the laboratory or workshop) and on its geographical location. The environmental effects on optical instrument performance in the tropics and subtropics are totally different from
21、those found when they are used in arctic regions. Individual parameters cause a variety of different and overlapping effects on instrument performance. The manufacturer attempts to ensure, and the user naturally expects, that instruments will resist the likely rigours of their environment throughout
22、 their life. This expectation can be assessed by exposure of the instrument to a range of simulated environmental parameters under controlled laboratory conditions. The severity of these conditions is often increased to obtain meaningful results in a relatively short period of time. In order to allo
23、w assessment and comparison of the response of optical instruments to appropriate environmental conditions, ISO 9022 contains details of a number of laboratory tests which reliably simulate a variety of different environments. The tests are based largely on IEC standards, modified where necessary to
24、 take into account features special to optical instruments. As a result of continuous progress in all fields, optical instruments are no longer only precision- engineered optical products, but, depending on their range of application, also contain additional assemblies from other fields. For this re
25、ason, the principal function of the instrument is to be assessed to determine which International Standard should be used for testing. If the optical function is of primary importance, then ISO 9022 is applicable, but if other functions take precedence, then the appropriate International Standard in
26、 the field concerned should be applied. Cases can arise where application of both ISO 9022 and other appropriate International Standards will be necessary.vi ISO 2015 All rights reservedBS ISO 9022-7:2015Optics and photonics Environmental test methods Part 7: Resistance to drip or rain 1 Scope This
27、part of ISO 9022 specifies the methods relating to the environmental tests of optical instruments including additional assemblies from other fields (e.g. mechanical, chemical, and electronic devices), under equivalent conditions, for their ability to resist the influence of drip or rain. The purpose
28、 of testing is to investigate to what extent the optical, climatic, mechanical, chemical, and electrical (including electrostatic) performance characteristics of the specimen are affected by drip or rain. Contamination of drip or rain water due to impurities in the air is to be ignored for the purpo
29、ses of this part of ISO 9022. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced
30、 document (including any amendments) applies. ISO 9022-1, Optics and photonics Environmental test methods Part 1: Definitions, extent of testing 3 General information and test conditions At the beginning of exposure, the temperature of the water shall be below that of the specimen. During exposure,
31、the specimen shall be mounted in the possible operating positions on a rotary table which rotates at a speed of 1 r/min to 2 r/min about its axis perpendicular to the sprinkling area. Prior to testing, the required rain or drip rate shall be measured and set in the centre of the sprinkling area occu
32、pied by the specimen. Measurement of the rain rate or drip rate shall be performed using the Hellman rain gauge (see A.3). If various measuring areas exist and/or several measurements are performed, the mean value for all measurements shall lie within the limits specified in Table 1, Table 2, and Ta
33、ble 3 for the required rain rates. 4 Conditioning 4.1 Conditioning method 72: Drip The drip shall be produced with the test apparatus shown in Figure 1. This size of the test apparatus and the dispenser plate (see Figure 2) shall be determined by the size of the specimens. Specimens requiring a disp
34、enser plate of more than 1 m 2may be tested in sections. The required water level above the dispenser plate shall be regulated by a float valve and/or overflows (see Figure 1). Decalcified or fully desalted water shall be used to prevent blockage of the fine holes in the dispenser plate. The distanc
35、e between the specimen and the dispenser plate shall not be less than 1 m. Care shall be taken to ensure that every point of the possible upper sides of the specimen are exposed to the drip during the test. INTERNATIONAL ST ANDARD ISO 9022-7:2015(E) ISO 2015 All rights reserved 1BS ISO 9022-7:2015IS
36、O 9022-7:2015(E) 4.2 Conditioning method 73: Steady rain The test shall be performed with tap water (drinking water) or with water prepared in accordance with 4.1. The shower heads used shall correspond to those shown in Figure 3. The swivelling shower heads shall be arranged in such a way that the
37、required rainfall rate is evenly distributed over the sprinkling area. The measurement of the rain rate shall be performed in accordance with Clause 3. The number of shower heads depends upon the size of the specimen. The shower heads shall be positioned at least 2 m above the highest surface of the
38、 specimen. A recommended arrangement of the shower heads is given in Annex A. 4.3 Conditioning method 74: Driving rain The requirements of 4.2 shall apply for producing the rainfall. The wind generator shall be arranged so that the rain falls as evenly as possible on the specimen. During the exposur
39、e, the rotary table bearing the specimen shall be erected approximately 2 m in the direction of the wind behind the centre of the sprinkled area which would be formed if no wind were applied. Prior to insertion of the specimen in the test apparatus, the wind velocity and the rain rate shall be measu
40、red in the area where the centre of the specimen will be located during exposure. A rain-catching metal sheet as shown in Figure 4 shall be inserted in the Hellman rain gauge. 5 Procedure 5.1 General The test shall be conducted in accordance with the requirements of the relevant specification and wi
41、th ISO 9022-1. 5.2 Preconditioning If not specified in the relevant specification, the surface of the specimen shall be properly cleaned prior to exposure. To this end, only such neutral cleaning agents shall be used that do not leave a film on or attack the surface of the specimen. After cleaning,
42、the specimen shall be restored to service condition (e.g. by the application of protective grease). 5.3 Recovery If not specified in the relevant specification, the surface of the specimen shall be dried. Blowing with compressed air is not permitted. The temperature shall then be adjusted to ambient
43、 conditions. 5.4 Final test After recovery, internal optical surfaces of the specimen might show a moisture film. This shall disappear in the time specified in the relevant specification. In the event that penetrated water cannot be detected by visual inspection, a method of examining whether moistu
44、re has penetrated shall be specified in the relevant specification.2 ISO 2015 All rights reservedBS ISO 9022-7:2015ISO 9022-7:2015(E) 6 Environmental test code The environmental test code shall be as defined in ISO 9022-1, giving a reference to ISO 9022 and the codes for the conditioning method chos
45、en, the degree of severity, and the state of operation. EXAMPLE The environmental test of optical instruments for resistance to steady rain, conditioning method 73, degree of severity 01, state of operation 1, is identified as:Environmental test ISO 9022-73-01-1 Table 1 Degrees of severity for condi
46、tioning method 72: Drip Degree of severity 01 02 03 04 05 06 07 08 09 Specimen temperature at beginning of exposure C 15 to 35 Difference between specimen and water temperature at beginning of exposure K 2 to 20 Water level above dispenser plate mm 10 40 75 Drip rate mm/min 1,5 0,5 3,5 1 5,5 1 Expos
47、ure time min 1 5 15 5 15 30 5 15 30 State of operation 0 or 1 or 2 NOTE For testing with degrees of severity 01 to 06, the test apparatus is to be filled prior to exposure in such a way that the water drips evenly from each hole. The water level is to be lowered to the required volume (e.g. by openi
48、ng the overflow) only after this has been guaranteed. The use of surface-active agents is not permitted. Table 2 Degrees of severity for conditioning method 73: Steady rain Degree of severity 01 02 Specimen temperature at beginning of exposure C 15 to 35 15 to 35 Difference between specimen and wate
49、r temperature at beginning of exposure K 2 to 20 2 to 20 Rain rate mm/min 5 2 20 3 Exposure time min 30 2 30 2 State of operation 0 or 1 or 2 Table 3 Degrees of severity for conditioning method 74: Driving rain Degree of severity 01 02 03 04 05 06 Specimen temperature at beginning of exposure C 15 to 35 Difference between specimen and water temperatures at beginning of exposure K 2 to 20 Wind velocities at specimen location m/s 18 3 33 3 Rain rate mm/min 2 1 10 3 2 1 Exp
