1、BSI Standards Publication BS ISO 9022-8:2015 Optics and photonics Environmental test methods Part 8: High internal pressure, low internal pressure, immersionBS ISO 9022-8:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 9022-8:2015. It supersedes BS ISO 9
2、022-8:1994 which is withdrawn.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 to its secretary. This publication does not purport to include all the necessary
3、 provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 87920 3 ICS 37.020 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was
4、published under the authority 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 8: High internal pressure, low internal pressure, immersion Optique
5、 et photonique Mthodes dessais denvironnement Partie 8: Pression interne leve, pression interne faible, immersion INTERNATIONAL STANDARD ISO 9022-8 Second edition 2015-03-01 Reference number ISO 9022-8:2015(E)BS ISO 9022-8:2015ISO 9022-8:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOC
6、UMENT ISO 2015 All rights reserved. Unless otherwise specified, no part of this 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 c
7、an be requested from either ISO at the address below or ISOs member 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 SwitzerlandBS ISO 9022-8:2015ISO 9022-8:2
8、015(E)Foreword iv Introduction vi 1 Scope . 1 2 Normative references 1 3 General information and test conditions 1 4 Conditioning 1 4.1 Conditioning method 80: High internal pressure . 1 4.2 Conditioning method 81: Low internal pressure 1 4.3 Conditioning method 82: Immersion 2 5 Procedure. 2 5.1 Ge
9、neral . 2 5.2 Conditioning method 82: Preconditioning of specimen and initial test 2 5.3 Conditioning methods 80 and 81: Pressure change curve 2 5.4 State of operation 2 . 3 5.5 Conditioning method 82: Recovery and final test 3 5.6 Conditioning method 82: Evaluation . 3 6 Environmental test code . 3
10、 7 Specification 3 Annex A (informative) Explanatory notes . 5 ISO 2015 All rights reserved iii Contents PageBS ISO 9022-8:2015ISO 9022-8:2015(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of
11、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 the right to be represented on that committee. International organizations, governmental and non-governmental,
12、 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
13、/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 possibili
14、ty 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 pat
15、ent 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 inf
16、ormation 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 second edition canc
17、els and replaces the first edition (ISO 9022-8:1994), 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
18、 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
19、 Part 20: Humid atmosphere containing sulfur dioxide or hydrogen sulfideiv ISO 2015 All rights reservedBS ISO 9022-8:2015ISO 9022-8:2015(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 d
20、amp heat ISO 2015 All rights reserved vBS ISO 9022-8:2015ISO 9022-8:2015(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 spe
21、cifications. 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
22、 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 throughou
23、t 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 all
24、ow 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 t
25、o 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 r
26、eason, 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 i
27、n 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 9022-8:2015Optics and photonics Environmental test methods Part 8: High internal pressure, low internal pr
28、essure, immersion 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. mechanical, chemical, and electronic devices), under equivalent conditions, for their ability to resist the influen
29、ce of high pressure, low pressure, or immersion. The purpose of testing is to investigate to what extent the optical, climatic, mechanical, chemical, and electrical performance characteristics of the specimen are affected by high pressure, low pressure, or immersion. 2 Normative references The follo
30、wing 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 document (including any amendments) applies. ISO 9022-1, Opti
31、cs and photonics Environmental test methods Part 1: Definitions, extent of testing 3 General information and test conditions The following are the three different test methods used to test the pressure-resistance of optical instruments: conditioning method 80: high internal pressure; conditioning me
32、thod 81: low internal pressure; conditioning method 82: immersion. Environmental conditions for conditioning method 80: clean dry air or dry nitrogen, relative humidity less than 30 %. Conditioning method 82 shall be used for instruments that might undergo immersion during service. The immersion tes
33、t shall be carried out in an open water container or in a water pressure chamber using softened or demineralized water. The immersion depth specified relates to the uppermost point of the specimen. The water temperature shall be between 10 C and 25 C. During exposure, the temperature of the specimen
34、 shall not be lower than the water temperature nor shall it exceed that temperature by more than 10 K. 4 Conditioning 4.1 Conditioning method 80: High internal pressure See Table 1. 4.2 Conditioning method 81: Low internal pressure See Table 2. INTERNATIONAL ST ANDARD ISO 9022-8:2015(E) ISO 2015 All
35、 rights reserved 1BS ISO 9022-8:2015ISO 9022-8:2015(E) 4.3 Conditioning method 82: Immersion See Table 3. Table 1 Degrees of severity for conditioning method 80: High internal pressure Degree of severity 01 02 03 04 05 06 07 08 09 10 11 12 13 Difference from ambient pressure hPa 100 2 400 5 Maximum
36、pressure drop hPa 75 50 20 10 5 2 300 200 100 50 20 10 5 Exposure time min 10 State of operation 1 or 2 a aSee 5.4. Table 2 Degrees of severity for conditioning method 81: Low internal pressure Degree of severity 01 02 03 04 05 06 07 08 09 10 11 12 13 Difference from ambient pressure hPa 100 2 400 5
37、 Maximum pressure drop hPa 75 50 20 10 5 2 300 200 100 50 20 10 5 Exposure time min 10 State of operation 1 or 2 a aSee 5.4. Table 3 Degree of severity for conditioning method 82: Immersion Degree of severity 01 02 03 04 05 06 Immersion depths m 1 4 10 50 200 400 Allowable deviation 10 % Exposure ti
38、me h 2 State of operation 1 or 2 5 Procedure 5.1 General The test shall be conducted in accordance with the requirements of the relevant specification and with ISO 9022-1. 5.2 Conditioning method 82: Preconditioning of specimen and initial test Prior to exposure, the specimen shall be conditioned at
39、 a temperature of 40 C 2 C and a relative humidity of less than 40 % for a period of 4 h. 5.3 Conditioning methods 80 and 81: Pressure change curve If required by the relevant specification, a graphical representation of the pressure change time history shall be recorded during testing. In the event
40、 that a suitable recorder is not available, the pressure change curve shall be plotted from not less than 10 values measured at equal intervals (see Annex A).2 ISO 2015 All rights reservedBS ISO 9022-8:2015ISO 9022-8:2015(E) 5.4 State of operation 2 If, in the relevant specification, state of operat
41、ion 2 is required for conditioning methods 80 and 81, the following points shall be taken into consideration: a) thermal changes within or on the specimen shall not exceed 1 K as, otherwise, the required measurement accuracy will be degraded; b) mechanical motions may be initiated from the outside (
42、e.g. manually) thus, replacing state of operation 2; c) in the event that mechanical motion causes changes of volume with the specimen, the resulting discontinuities in the recording of the event shall be identified. 5.5 C onditioning meth od 82: R ec o v ery and final t est After completion of expo
43、sure, the specimen shall be conditioned at a temperature of 40 C 2 C and a relative humidity of less than 40 % for a period of 4 h and then assessed in accordance with 5.6. 5.6 Conditioning method 82: Evaluation Initial and final tests should not reveal moisture film on optical surfaces. Moisture fi
44、lm will be acceptable provided that it disappears during heating of the specimen and does not reappear within 24 h after completion of the test. The results of specimen evaluation shall be compared in accordance with 5.2 and 5.5. The relevant specification shall specify acceptable differences. If, o
45、n account of the specimen design (e.g. closed casing), a visual inspection cannot reveal penetration of water, the relevant specification shall specify a method of detecting penetrated moisture. 6 Environmental test code The environmental test code shall be as defined in ISO 9022-1, giving a referen
46、ce to ISO 9022 and the codes for the conditioning method chosen, the degree of severity, and the state of operation. EXAMPLE The environmental test of optical instruments for pressure-resistance in the event of internal low pressure, conditioning method 81, degree of severity 01, state of operation
47、1, is identified as:Environmental test ISO 9022-81011 7 Specification The relevant specification shall contain the following details: a) environmental test code; b) number of specimens; c) preconditioning (see 5.2); d) type and scope of initial test (see 5.2); e) conditioning methods 80 and 81: if r
48、ecording of a pressure change curve in accordance with 5.3 is required, criteria for evaluation; f) state of operation 2: period of operation; g) state of operation 2: type and scope of intermediate test; h) recovery (see 5.5); ISO 2015 All rights reserved 3BS ISO 9022-8:2015ISO 9022-8:2015(E) i) ty
49、pe and scope of final test (see 5.5); j) criteria for evaluation (see 5.6); k) type and scope of test report.4 ISO 2015 All rights reservedBS ISO 9022-8:2015ISO 9022-8:2015(E) Annex A (informative) Explanatory notes For the sake of satisfactory functioning, it is essential that changes of temperature do not cause moisture films on internal surfaces since, otherwise, the optical performance would be considerably degraded and other effects such as corrosion or mould
