DIN ISO 9022-8-2015 Optics and photonics - Environmental test methods - Part 8 High internal pressure low internal pressure immersion (ISO 9022-8 2015)《光学和光子学 环境试验方法 第8部分 高压、低压及浸渍(.pdf

《DIN ISO 9022-8-2015 Optics and photonics - Environmental test methods - Part 8 High internal pressure low internal pressure immersion (ISO 9022-8 2015)《光学和光子学 环境试验方法 第8部分 高压、低压及浸渍(.pdf》由会员分享，可在线阅读，更多相关《DIN ISO 9022-8-2015 Optics and photonics - Environmental test methods - Part 8 High internal pressure low internal pressure immersion (ISO 9022-8 2015)《光学和光子学 环境试验方法 第8部分 高压、低压及浸渍(.pdf（11页珍藏版）》请在麦多课文档分享上搜索。

1、August 2015 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、37.020!%DF“2333590www.din.deDDIN ISO 9022-8Optics and photonics Environmental test methods Part 8: High internal pressure, low internal pressure, immersion(ISO 9022-8:2015),English translation of DIN ISO 9022-8:2015-08Optik und Photonik Umweltprfverfahren Teil 8: Hoher Innendruck, niedriger Innendru

3、ck, Eintauchen (ISO 9022-8:2015),Englische bersetzung von DIN ISO 9022-8:2015-08Optique et photonique Mthodes dessais denvironnement Partie 8: Pression interne leve, pression interne faible, immersion (ISO 9022-8:2015),Traduction anglaise de DIN ISO 9022-8:2015-08SupersedesDIN ISO 9022-8:2000-09www.

4、beuth.deDocument comprises 11 pagesIn case of doubt, the German-language original shall be considered authoritative.07.15 A comma is used as the decimal marker. National foreword 3Introduction 51 Scope . 62 Normative references 63 General information and test conditions 64 Conditioning 64.1 Conditio

5、ning method 80: High internal pressure . 64.2 Conditioning method 81: Low internal pressure 64.3 Conditioning method 82: Immersion 75 Procedure. 75.1 General . 75.2 Conditioning method 82: Preconditioning of specimen and initial test 75.3 Conditioning methods 80 and 81: Pressure change curve 75.4 St

6、ate of operation 2 . 85.5 Conditioning method 82: Recovery and final test 85.6 Conditioning method 82: Evaluation . 86 Environmental test code . 87 Specification 8Annex A (informative) Explanatory notes . 10Contents PageDIN ISO 9022-8:2015-08 2National Annex NA (informative) Bibliography 4National f

7、oreword This document (ISO 9022-8:2015) has been prepared by Technical Committee ISO/TC 172 “Optics and photonics”, Subcommittee SC 1 “Fundamental standards” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the DIN-Normenausschuss Feinmechanik und Optik (DIN S

8、tandards Committee Optics and Precision Mechanics), Working Committee NA 027-01-02 AA Grundnormen der Optik, Working Group NA 027-01-02-03 AK Umweltbedingungen und -prfungen fr optische Gerte. Attention is drawn to the possibility that some of the elements of this document may be the subject of pate

9、nt rights. DIN and/or DKE shall not be held responsible for identifying any or all such patent rights. DIN 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:

10、 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 Part 17: Combined contamination, sola

11、r radiation Part 20: Humid atmosphere containing sulfur dioxide or hydrogen sulfide 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 damp heat The DIN Standard corresponding to the Internati

12、onal Standard referred to in this document is as follows: ISO 9022-1 siehe DIN ISO 9022-1 Amendments This standard differs from DIN ISO 9022-8:2000-09 as follows: a) normative references have been updated; b) the standard has been editorially updated; c) the text of International Standard ISO 9022-8

13、:2015 has been adopted in its entirety. Previous editions DIN 58390-8: 1978-09, 1987-07 DIN ISO 9022-8: 2000-09 DIN ISO 9022-8:2015-08 3 National Annex NA (informative) Bibliography DIN ISO 9022-1, Optics and photonics Environmental test methods Part 1: Definitions, extent of testing DIN ISO 9022-8:

14、2015-08 4 IntroductionOptical 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 specifications.The type and severity of these parameters depend on the

15、 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 those found when they are used in arctic regions. Individual parame

16、ters 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 their life. This expectation can be assessed by exposure of the ins

17、trument 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 allow assessment and comparison of the response of optical instruments to

18、 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 take into account features special to optical instruments.As a resul

19、t 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 reason, the principal function of the instrument is to be assessed to det

20、ermine 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 the field concerned should be applied. Cases can arise where applicati

21、on of both ISO 9022 and other appropriate International Standards will be necessary.Optics and photonics Environmental test methods Part 8: High internal pressure, low internal pressure, immersionDIN ISO 9022-8:2015-08 5 1 ScopeThis part of ISO 9022 specifies the methods relating to the environmenta

22、l 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 high pressure, low pressure, or immersion.The purpose of testing is to investigate to what e

23、xtent the optical, climatic, mechanical, chemical, and electrical performance characteristics of the specimen are affected by high pressure, low pressure, or immersion.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensabl

24、e 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 of testing3 General informatio

25、n and test conditionsThe following are the three different test methods used to test the pressure-resistance of optical instruments: conditioning method 80: high internal pressure; conditioning method 81: low internal pressure; conditioning method 82: immersion.Environmental conditions for condition

26、ing 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 test shall be carried out in an open water container or in a water pressure chamber using softened or demine

27、ralized 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 shall not be lower than the water temperature nor shall it exceed that temperature by more than 10 K.4 C

28、onditioning4.1 Conditioning method 80: High internal pressureSee Table 1.4.2 Conditioning method 81: Low internal pressureSee Table 2.DIN ISO 9022-8:2015-08 6 4.3 Conditioning method 82: ImmersionSee Table 3.Table 1 Degrees of severity for conditioning method 80: High internal pressureDegree of seve

29、rity 01 02 03 04 05 06 07 08 09 10 11 12 13Difference from ambient pressure hPa100 2 400 5Maximum pressure drop hPa 75 50 20 10 5 2 300 200 100 50 20 10 5Exposure time min 10State of operation 1 or 2aaSee 5.4.Table 2 Degrees of severity for conditioning method 81: Low internal pressureDegree of seve

30、rity 01 02 03 04 05 06 07 08 09 10 11 12 13Difference from ambient pressure hPa100 2 400 5Maximum pressure drop hPa 75 50 20 10 5 2 300 200 100 50 20 10 5Exposure time min 10State of operation 1 or 2aaSee 5.4.Table 3 Degree of severity for conditioning method 82: ImmersionDegree of severity 01 02 03

31、 04 05 06Immersion depthsm 1 4 10 50 200 400Allowable deviation 10 %Exposure timeh2State of operation 1 or 25 Procedure5.1 GeneralThe 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

32、and initial testPrior to exposure, 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.5.3 Conditioning methods 80 and 81: Pressure change curveIf required by the relevant specification, a graphical representation of the pressu

33、re change time history shall be recorded during testing. In the event 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).DIN ISO 9022-8:2015-08 7 5.4 State of operation 2If, in the relevant spec

34、ification, state of operation 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 init

35、iated from the outside (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 Conditioning method 82: Recovery and final testAfter comp

36、letion of exposure, 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: EvaluationInitial and final tests should not reveal moisture film on optical surfaces.

37、 Moisture film 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 differ

38、ences.If, on 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 codeThe environmental test code shall be as defined in ISO 9022-1, giving

39、a reference 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 op

40、eration 1, is identified as:Environmental test ISO 9022-810117 SpecificationThe 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

41、recording 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);DIN ISO 9022-8:2015-08 8 i) type and scope of final test (see 5.5);j) crite

42、ria for evaluation (see 5.6);k) type and scope of test report.DIN ISO 9022-8:2015-08 9 Annex A (informative) Explanatory notesFor the sake of satisfactory functioning, it is essential that changes of temperature do not cause moisture films on internal surfaces since, otherwise, the optical performan

43、ce would be considerably degraded and other effects such as corrosion or mould growth might be accelerated. This requirement can normally be satisfied by sealing the instrument before use with dry air or nitrogen and by defining the pressure-resistance of the instrument.Therefore, in order to ensure

44、 proper functioning, it is necessary to investigate the pressure-resistance. Depending upon the air volume of the instrument and the number of enclosure interfaces or the functional bushings inserted into the enclosure wall (in other words, depending upon the number and type of enclosure sealings),

45、reasonable pressure-resistance requirements need to be selected and defined choosing a mission-orientated environment and conditioning method.Instruments used and transported and thus exposed to maximum stress in high-altitude environments therefore have to be pressure-tested at high internal pressu

46、re whereas instruments which are exposed to maximum stress in environments of low temperature or high external pressure have to be pressure-tested at low internal pressure (testing at low internal pressure also presents a higher degree of safety from contamination and increased internal humidity).Skin diving or underwater instruments shall be immersion-tested.Recording the pressure/time history from discrete data measured during testing at high internal pressure (conditioning method 80) or low internal pressure (conditioning me