BS ISO 9022-9:2016 download

06-26-2021 comment

BS ISO 9022-9:2016 download.Optics and photonics Environmental test methods Part 9 : Solar radiation and weathering.
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 specifications.
The type and severity of these parameters depend on the conditions of use of the instrument (for example, In a 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 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 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 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 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 ni application, also contain additional 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 precedence, 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.
I 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 effects of simulated solar radiation or laboratory weathering, which is a combination of simulated solar radiation, heat, and moisture. It Is applicable to Instruments that may be exposed to sunlight during operation or unsheltered storage on the earth’s surface, or In the lower atmosphere.
The purpose of testing is to investigate to what extent the optical, dimatic. mechanical, chemical and electrical (induding electrostatic) performance characteristics of the specimen are affected by solar radiation or weathering (solar radiation, heat, and moisture).
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 document (including any amendments) applies.
ISO 4892-1:1999, Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance
ISO 4892-2:2013, Plastics — Methods of exposure to luboratoiy light sources — Part 2: Xenon-arc lamps
ISO 9022-1. Optics and photonics — Environmental test methods — Part 1: Deflnirions extent of testing
ISO 9370. Plastics — Instrumental determination of radiant exposure In weathering tests — General guidance and basic test method
IEC 60068-2-5:2010, Environmental testing — Part 2-5: Tests — Test Sa: Simulated solar radiation at ground level and guidance for solar radiation testing
3 General information and test conditions
A radiation source capable of generating Irradiance as specified In Table 1 on the specimen surface or in a plane specified in the relevant specification Is Installed In a heated test chamber. The data shall include any radiation reflected from the lest chamber walls but not infrared radiation emitted from the chamber walls on account of the wall temperature.
Ozone generated during exposure shall be removed From the test chamber,
The position and mounting of the specimen, the characteristics of its support and the location of the test points for measuring the radiation and the temperature within the exposure zone shall be specified in the relevant specification.
In addition to the requirements specified above, IEC 60068-2-5 applies.
4.2 CondItioning method 21: Laboratory weathering
The purpose of the laboratory weathering test is to determine the effect of combined simulated solar radiation, heat and moisture, acting simultaneously on the test specimens, and causing chemical and physical degradation processes.
General guidance and specific instructions on how to perform an accelerated weathering test using an appropriately filtered xenon-arc light source are provided in ISO 4892-1 and ISO 4892-2.
The laboratory light source shall be appropriately filtered xenon-arc lamp(s) meeting the specifications of ISO 4892-1 and ISO 4892-2.
Exposure parameters according to ISO 4892-2:2O13 Table 3 and Table 4, Cycle A-i and Cycle A-4 are commonly used for the sImulation of outdoor exposures, while Cycle U2 and Cycle 8-5 are for Interior exposures behind window glass and Cycle B-3 and Cycle 8-6 are for hot light fastness, e.g. for automotive Interior devices.
See Table 3 for laboratory weathering with temperature control using a black-standard thermometer and Table 4 for laboratory weathering with temperature control using a black-panel thermometer. Any changes to the test parameters described in Tables 3 and 4 shall be given in the relevant specification.
For the test, an apparatus in accordance with ISO 4892-2 shall be used, which Is capable of measuring and controllIng irradiance, chamber air temperature, black-standard or black-panel temperature, and relative humidity, as well as providing cyclic water spray.
All sensors for measurement of Irradlance, temperature, or humidity shall be operated and calibrated according to ISO 4892- 1, ISO 4892-2, and ISO 9370.
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 chosen, the degree olseverity and the state of operation.
IXAMPLE The environmental lest of optical instruments for resistance to solar radiation, conditioning method 20. degree olseverity 02. state o1operaton 1, is Identified as:
Environmental test ISO 9022-20-02-1
7 SpecificatIon
The relevant specification shall contain the following details:
a) environmental test code;
b) number oP specimens;
c) specimen surface to be irradiated;
d) position of the irradiation measuring plane;
e) mounting and support of specimen;
f) location of the test points for measuring irradiance and test chamber temperature;
g) precondftioning ilother than specified In £Z
h) type and scope of initial test;
i) state of operation 2: period of operation;
j) state of operation 2: type and scope of intermediate test;
k) recovery;
1) type and scope of final test;
m) criteria for evaluation;
n) type and scope of test report.

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