1、December 2016 English price group 12No 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 37.020!%V(“2595105www.din.deDIN
2、 ISO 9022-23Optics and photonics Environmental test methods Part 23: Low pressure combined with cold, ambient temperature and dry or damp heat (ISO 902223:2016),English translation of DIN ISO 9022-23:2016-12Optik und Photonik Umweltprfverfahren Teil 23: Niedriger Druck in Kombination mit Klte, Raumt
3、emperatur und trockener oder feuchter Wrme (ISO 902223:2016),Englische bersetzung von DIN ISO 9022-23:2016-12Optique et photonique Mthodes dessais denvironnement Partie 23: Basse pression combine la temprature ambiante et froide et la chaleur sche ou humide (ISO 902223:2016),Traduction anglaise de D
4、IN ISO 9022-23:2016-12SupersedesDIN ISO 902223:201503www.beuth.deDocument comprises 20 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.12.16 DIN ISO 9022-23:2016-12 2 A comma is used as the decimal marker. Contents Page Nationa
5、l foreword . 4 National Annex NA (informative) Bibliography . 6 Introduction 7 1 Scope 8 2 Normative references 8 3 General information and test conditions . 8 4 Conditioning 9 4.1 Conditioning method 45 Low ambient pressure combined with ambient temperature 9 4.2 Conditioning method 46 Low ambient
6、pressure combined with dry heat . 9 4.3 Conditioning method 47 Low internal pressure combined with damp heat, pressure difference low . 10 4.4 Conditioning method 48 Low internal pressure combined with damp heat, pressure difference medium 11 4.5 Conditioning method 49 Low internal pressure combined
7、 with damp heat, pressure difference high . 12 4.6 Conditioning method 50 Low ambient pressure combined with cold, including hoarfrost and dew 13 4.7 Conditioning method 51 Low ambient pressure combined with cold, without hoarfrost and dew 13 5 Procedure 13 5.1 General . 13 5.2 Procedure for conditi
8、oning method 45 13 5.3 Procedure for conditioning method 46 13 5.4 Procedure for conditioning method 47 14 5.4.1 Initial and final inspection 14 5.4.2 Preliminary test 1 14 5.4.3 Preliminary test 2 14 5.4.4 Condition 1 . 14 5.4.5 Conditions 2 and 3 . 15 5.5 Procedure for conditioning method 48 15 5.
9、5.1 Initial and final inspection 15 5.5.2 Preliminary test 15 5.5.3 Condition 1 . 15 5.5.4 Conditions 2 and 3 . 15 5.6 Procedure for conditioning method 49 15 5.6.1 Initial and final inspection 15 5.6.2 Preliminary test 15 5.6.3 Conditions 3 and 4 . 15 5.7 Procedure for conditioning method 50 15 5.8
10、 Procedure for conditioning method 51 16 DIN ISO 9022-23:2016-12 3 6 Environmental test code 16 7 Specification . 16 Annex A (informative) Explanatory notes . 18 A.1 Conditioning method 47 . 18 A.2 Conditioning method 48. 18 A.3 Conditioning method 49. 18 A.4 Conditioning methods 50 and 51 18 A.5 Ex
11、ample of conditioning method 50 19 Bibliography . 20 DIN ISO 9022-23:2016-12 4 National foreword This document (ISO 9022-23:2016) has been prepared by Technical Committee ISO/TC 172 “Optics and photonics”, Subcommittee SC 1 “Fundamental standards” (Secretariat: DIN, Germany). The responsible German
12、body involved in its preparation was DIN-Normenausschuss Feinmechanik und Optik (DIN Standards Committee Optics and Precision Mechanics), Working Committee NA 027-01-02 AA Grundnormen der Optik, Working Group Umweltbedingungen und -prfungen fr optische Gerte. Attention is drawn to the possibility th
13、at some of the elements of this document may be the subject of patent 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: Def
14、initions, extent of testing Part 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
15、 Part 14: Dew, hoarfrost, ice Part 17: Combined contamination, solar 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 an
16、d dry and damp heat The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 9022-1 DIN ISO 9022-1 ISO 9022-2 DIN ISO 9022-2 ISO 9022-8 DIN ISO 9022-8 DIN ISO 9022-23:2016-12 5 Amendments This standard differs from DIN ISO 9022-23:2015-03 as fol
17、lows: a) the term “low ambient pressure” replaces the term “low air pressure” used in the previous edition of the ISO document; b) the German translations of the terms “dew”, “moisture” and “hoarfrost” have been unified to read “Tau”, “Feuchte” and “Reif”; c) the standard has been revised to reflect
18、 the changes made to the ISO 9022 series; d) the standard has been editorially updated. Previous editions DIN 58390-5: 1974-04, 1984-12 DIN 58390-18: 1988-09 DIN 58390-21: 1995-02 DIN ISO 9022-5: 1999-05 DIN ISO 9022-18: 2001-05 DIN ISO 9022-21: 2001-05 DIN ISO 9022-23: 2015-03 DIN ISO 9022-23:2016-
19、12 6 National Annex NA (informative) Bibliography DIN ISO 9022-1, Optics and photonics Environmental test methods Part 1: Definitions, extent of testing DIN ISO 9022-2, Optics and photonics Environmental test methods Part 2: Cold, heat and humidity DIN ISO 9022-8, Optics and photonics Environmental
20、test methods Part 8: High internal pressure, low internal pressure, immersion 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 sp
21、ecifications.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 throughout
23、 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 allow
24、 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
25、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 reaso
26、n, 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 th
27、e field concerned should be applied. Cases may arise where application of both ISO 9022 and other appropriate International Standards will be necessary.Optics and photonics Environmental test methods Part 23: Low pressure combined with cold, ambient temperature and dry or damp heat DIN ISO 9022-23:2
28、016-12 7 1 ScopeThis 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 low
29、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 optical instruments including additional assemblies from other fields, designed for operation and/or transport in high mountain
30、ous 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 electrostatic) performance characteristics of the specimen are affected by combined low pressure and low, ambient, or high tempera
31、ture. Furthermore, the additional effects of moisture condensing and freezing on the instrument or components can be determined. Examples are instruments which are installed or externally mounted on aircraft or missiles or transported inside aircraft or flying objects not providing any pressure equa
32、lization.Annex A explains the intent of the different types of tests.2 Normative referencesThe 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
33、, 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 testingISO 9022-8, Optics and photonics Environmental test methods Part 8: High internal pressure, low internal pressure, imme
34、rsion3 General information and test conditionsAmbient temperature as understood by this part of ISO 9022 is (23 3) C.The values of temperatures and climatic conditions 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 t
35、he 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, 46, 50, and 51, air circulation in low-pressure cabinets or low-pressure chambers is required. The low-pressure chamber, itself, can ei
36、ther be equipped as a thermal chamber or be installed in a thermal chamber.DIN ISO 9022-23:2016-12 8For conditioning methods 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. De
37、w on the specimen is admissible. The individual test steps shall be performed directly one after another. Interruption of 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 conditionin
38、g method 48, a low-pressure container is also required.In addition for conditioning method 49, the specimens shall have 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 sp
39、ecimen. Shock-type air pressure changes shall be avoided unless they are likely to be encountered in the natural environment.4 Conditioning4.1 Conditioning method 45 Low ambient pressure combined with ambient temperatureSee Table 1.Table 1 Degrees of severity for conditioning method 45 Low ambient p
40、ressure combined with ambient temperatureDegree of severity 01 02 03 04Test chamber temperature C 23 3 23 3 23 3 23 3Test chamber pressure hPa 800 30 700 30 600 30 500 30Time of pressure reduction and pressure increasemin 15Period of conditioning h 1aState of operation 2 2 2 2aWith thermally active
41、specimens after the steady-state temperature of the specimen has been reached.4.2 Conditioning method 46 Low ambient pressure combined with dry heatSee Table 2.DIN ISO 9022-23:2016-12 9 Table 2 Degrees of severity for conditioning method 46 Low ambient pressure combined with dry heatDegree of severi
42、ty01 02 03 04 05 06 07 08 09 10 11 12Test chamber temperatureC 40 3 40 3 55 3 55 3 63 3 63 3 85 3a85 3a40 3 55 3 63 3 85 3aTest chamber pressurehPa 100 5 10 1Time of pres-sure reduc-tion and pressure increasemin 15 80Mean temper-ature change during heat-ing/coolingK/min 0,2 to 2Exposure time h 24 72
43、 24 72 24 72 24 72 24 24 24 24State of oper-ation1 or 2aState of operation 1 only.4.3 Conditioning method 47 Low internal pressure combined with damp heat, pressure difference lowSee Table 3 and Figure 1.Conditioning method 47 shall be used for optical instruments where demands made on their sealing
44、 (low pressure resistance) are low, 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 lowD
45、egree of severity 01 02 03 04 05 06Condition 1Step 1Test chamber temperatureC 55 2 63 2 70 2Relative humidity % 40Exposure time hUntil the internal air of the specimen has reached a temperature at least within 3 K of the test chamber temperature.Step 2Climatic conditions 40 C 2 C and 90 % to 95 % re
46、lative humidity.Exposure time h 1Number of cycles 6 12 6 12 6 12Condition 2Test chamber temperature C 10 3Exposure time hUntil specimen has reached a temperature at least within 3 K of the test chamber temperature.DIN ISO 9022-23:2016-12 10Condition 3Test chamber temperature C 40 2Relative humidity
47、% 40Exposure time hUntil specimen has reached a temperature at least within 3 K of the test chamber temperature.State of operation 1Key1 condition 12 condition 23 condition 34 duration according to Table 15 relative humidity, 40 %6 relative humidity, 90 % to 95 %7 relative humidity, 40 %X duration,
48、hT temperature, CFigure 1 Cycling curve for conditioning method 47, using example of degree of severity 014.4 Conditioning method 48 Low internal pressure combined with damp heat, pressure difference mediumSee Table 4.Conditioning method 48 shall be used for optical instruments where demands made on
49、 their sealing (low pressure resistance) are medium, e.g. instruments which comply with the requirements of the degrees of severity 03, 04, 09, and 10 of conditioning method 81 in ISO 9022-8.Table 3 (continued)DIN ISO 9022-23:2016-12 11 Table 4 Degrees of severity for conditioning method 48 Low internal pressure
