1、BS ISO 9022-23:2016 Optics and photonics Environmental test methods Part 23: Low pressure combined with cold, ambient temperature and dry or damp heat BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 9022-23:2016 BRITISH STANDARD National foreword This British
2、 Standard is the UK implementation of ISO 9022-23:2016. It supersedes BS ISO 9022-23:2013 which is withdrawn. 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 t
3、o its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 92244 2 ICS 37.020 Compliance with a British Sta
4、ndard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2016. Amendments issued since publication Date Text affectedBS ISO 9022-23:2016 ISO 2016 Optics and photonics Environmental test meth
5、ods Part 23: Low pressure combined with cold, ambient temperature and dry or damp heat Optique et photonique Mthodes dessais denvironnement Partie 23: Basse pression combine la temprature ambiante et froide et la chaleur sche ou humide INTERNATIONAL STANDARD ISO 9022-23 Second edition 2016-07-15 Ref
6、erence number ISO 9022-23:2016(E)BS ISO 9022-23:2016ISO 9022-23:2016(E)ii ISO 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or b
7、y 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 the country of the requester. ISO copyright office Ch. de Blandonnet 8 C
8、P 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgBS ISO 9022-23:2016ISO 9022-23:2016(E)Foreword iv Introduction vi 1 Scope . 1 2 Normative references 1 3 General information and test conditions 1 4 Conditioning 2 4.1 Conditioning metho
9、d 45 Low ambient pressure combined with ambient temperature 2 4.2 Conditioning method 46 Low ambient pressure combined with dry heat 2 4.3 Conditioning method 47 Low internal pressure combined with damp heat, pressure difference low . 3 4.4 Conditioning method 48 Low internal pressure combined with
10、damp heat, pressure difference medium . 4 4.5 Conditioning method 49 Low internal pressure combined with damp heat, pressure difference high . 5 4.6 Conditioning method 50 Low ambient pressure combined with cold, including hoarfrost and dew 6 4.7 Conditioning method 51 Low ambient pressure combined
11、with cold, without hoarfrost and dew 6 5 Procedure. 6 5.1 General . 6 5.2 Procedure for conditioning method 45 . 6 5.3 Procedure for conditioning method 46 . 6 5.4 Procedure for conditioning method 47 . 7 5.4.1 Initial and final inspection . 7 5.4.2 Preliminary test 1 7 5.4.3 Preliminary test 2 7 5.
12、4.4 Condition 1 7 5.4.5 Conditions 2 and 3 8 5.5 Procedure for conditioning method 48 . 8 5.5.1 Initial and final inspection . 8 5.5.2 Preliminary test 8 5.5.3 Condition 1 8 5.5.4 Conditions 2 and 3 8 5.6 Procedure for conditioning method 49 . 8 5.6.1 Initial and final inspection . 8 5.6.2 Prelimina
13、ry test 8 5.6.3 Conditions 3 and 4 8 5.7 Procedure for conditioning method 50 . 8 5.8 Procedure for conditioning method 51 . 9 6 Environmental test code . 9 7 Specification 9 Annex A (informative) Explanatory notes 11 Bibliography .13 ISO 2016 All rights reserved iii Contents PageBS ISO 9022-23:2016
14、ISO 9022-23:2016(E) Foreword ISO (the International Organization 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 s
15、ubject for which a technical committee has been established has 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
16、(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/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should
17、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 possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for ident
18、ifying 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 patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the conveni
19、ence 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 information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword -
20、 Supplementary information The committee responsible for this document is ISO/TC 172 Optics and photonics, Subcommittee SC 1 Fundamental standards. This second edition cancels and replaces the first edition (ISO 9022-23:2013), which has been undergone a minor revision to reflect the changes made to
21、the ISO 9022 series. The term “low pressure” is now used throughout the whole document where previously the term “low air pressure” was used. ISO 9022 consists of the following parts, under the general title Optics and photonics Environmental test methods: Part 1: Definitions, extent of testing Part
22、 2: Cold, heat and humidity Part 3: Mechanical 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 Pa
23、rt 17: Combined contamination, solar radiation Part 20: Humid atmosphere containing sulfur dioxide or hydrogen sulfideiv ISO 2016 All rights reservedBS ISO 9022-23:2016ISO 9022-23:2016(E) Part 22: Combined cold, dry heat or temperature change with bump or random vibration Part 23: Low pressure combi
24、ned with cold, ambient temperature and dry or damp heat ISO 2016 All rights reserved vBS ISO 9022-23:2016ISO 9022-23:2016(E) Introduction Optical instruments are affected during their use by a number of different environmental parameters which they are required to resist without significant reductio
25、n in performance and to remain within defined specifications. 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
26、tropics and subtropics are totally different from 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
27、the likely rigours of their environment throughout 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
28、 relatively short period of time. In order to allow 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 lar
29、gely on IEC standards, modified where necessary to 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 ad
30、ditional assemblies from other fields. For this reason, 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 preceden
31、ce, then the appropriate International Standard in the field concerned should be applied. Cases may arise where application of both ISO 9022 and other appropriate International Standards will be necessary.vi ISO 2016 All rights reservedBS ISO 9022-23:2016INTERNATIONAL ST ANDARD ISO 9022-23:2016(E) O
32、ptics and photonics Environmental test methods Part 23: Low pressure combined with cold, ambient temperature and dry or damp heat 1 Scope This part of ISO 9022 specifies the methods relating to the environmental tests of optical instruments including additional assemblies from other fields (e.g. mec
33、hanical, chemical, and electronic devices), under equivalent conditions, for their ability to resist the influence of low pressure combined with cold, including the potential condensation and freezing of moisture, ambient temperature, and dry or damp heat. This part of ISO 9022 is applicable to opti
34、cal instruments including additional assemblies from other fields, designed for operation and/or transport in high mountainous areas or on board aircraft or missiles. The purpose of the testing is to investigate to what extent optical, climatic, mechanical, chemical, and electrical (including electr
35、ostatic) performance characteristics of the specimen are affected by combined low pressure and low, ambient, or high temperature. Furthermore, the additional effects of moisture condensing and freezing on the instrument or components can be determined. Examples are instruments which are installed or
36、 externally mounted on aircraft or missiles or transported inside aircraft or flying objects not providing any pressure equalization. Annex A explains the intent of the different types of tests. 2 Normative references The following documents, in whole or in part, are normatively referenced in this d
37、ocument and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 9022-1, Optics and photonics Environmental test methods Part 1: Definitions, extent o
38、f testing ISO 9022-8, Optics and photonics Environmental test methods Part 8: High internal pressure, low internal pressure, immersion 3 General information and test conditions Ambient temperature as understood by this part of ISO 9022 is (23 3) C. The values of temperatures and climatic conditions
39、specified in Table 1 to Table 6 are selected from ISO 9022-2, conditioning methods 10, 11, and 12. The size of the test chamber and the setup of the specimens shall be chosen in such a way that a uniform temperature for all specimens within the test chamber is ensured. For conditioning methods 45, 4
40、6, 50, and 51, air circulation in low-pressure cabinets or low-pressure chambers is required. The low-pressure chamber, itself, can either be equipped as a thermal chamber or be installed in a thermal chamber. ISO 2016 All rights reserved 1BS ISO 9022-23:2016ISO 9022-23:2016(E) For conditioning meth
41、ods 47 to 49, a climatic test chamber is required. Three different test methods are used to test combined damp heat and low internal pressure resistance of optical instruments. Dew on the specimen is admissible. The individual test steps shall be performed directly one after another. Interruption of
42、 the test is not admissible. In addition for conditioning method 47, if condensation is produced, the specimens shall be protected against falling drops. In addition for conditioning method 48, a low-pressure container is also required. In addition for conditioning method 49, the specimens shall hav
43、e a test connection for evacuation and pressure measurement, as described in ISO 9022-8. Changes in temperature shall be effected sufficiently slowly not to cause any damage to the specimen. Shock-type air pressure changes shall be avoided unless they are likely to be encountered in the natural envi
44、ronment. 4 Conditioning 4.1 Conditioning method 45 Low ambient pressure combined with ambient temperature See Table 1. Table 1 Degrees of severity for conditioning method 45 Low ambient pressure combined with ambient temperature Degree of severity 01 02 03 04 Test chamber temperature C 23 3 23 3 23
45、3 23 3 Test chamber pressure hPa 800 30 700 30 600 30 500 30 Time of pressure reduction and pressure increase min 15 Period of conditioning h 1 a State of operation 2 2 2 2 aWith thermally active specimens after the steady-state temperature of the specimen has been reached. 4.2 Conditioning method 4
46、6 Low ambient pressure combined with dry heat See Table 2.2 ISO 2016 All rights reservedBS ISO 9022-23:2016ISO 9022-23:2016(E) Table 2 Degrees of severity for conditioning method 46 Low ambient pressure combined with dry heat Degree of severity 01 02 03 04 05 06 07 08 09 10 11 12 Test chamber temper
47、ature C 40 3 40 3 55 3 55 3 63 3 63 3 85 3 a 85 3 a 40 3 55 3 63 3 85 3 a Test chamber pressure hPa 100 5 10 1 Time of pres- sure reduc- tion and pressure increase min 15 80 Mean temper- ature change during heat- ing/cooling K/min 0,2 to 2 Exposure time h 24 72 24 72 24 72 24 72 24 24 24 24 State of
48、 oper- ation 1 or 2 aState of operation 1 only. 4.3 Conditioning method 47 Low internal pressure combined with damp heat, pressure difference low See Table 3 and Figure 1. Conditioning method 47 shall be used for optical instruments where demands made on their sealing (low pressure resistance) are l
49、ow, e.g. instruments which comply with the requirements of the degrees of severity 01, 02, 07, and 08 of conditioning method 81 in ISO 9022-8. Table 3 Degrees of severity for conditioning method 47 Low internal pressure combined with damp heat, pressure difference low Degree of severity 01 02 03 04 05 06 Condition 1 Step 1 Test chamber temperature C 55 2 63 2 70 2 Relative humidity % 40 Exposure tim
