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BS ISO 9022-2:2015 pdf free

BS ISO 9022-2:2015 pdf free.Optics and photonics一Environmental test methods
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 influence of temperature and/or humidity.
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 temperature and/or humidity.
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 9022-1, Optics and photonics一Environmental test methods一Part 1: Definitions, extent of testing
General information and test conditions
The specimen is exposed to climatic stress in conditioning chambers or cabinets providing air circulation.
The size of the specimens and their arrangement shall be such as to ensure a uniform conditioning of all specimens. Where condensation is likely to occur, the condensate shall be prevented from dripping onto the specimen.
Where heat- dissipating specimens are involved, the relevant specification shall state the number, method of installation and location of the heat sensors.
WARNING一Persons entering test chambers with dew-point temperatures of equal to or greater than 38 °C must be equipped with breathing apparatus (e.g. conditioning methods 12, 13, and 16).
The required exposure time shall not commence until all parts of the specimen have reached a temperature within at least 3 K of the test chamber temperature. For heat- dissipating specimens, the period of exposure or dwell time conditioning methods 14 and 15) shall not begin, or end, until the temperature of the specimen changes not more than 1 K within 1 h at the stabilized test chamber temperature. The last hour of the temperature soaking time shall be considered to be the first hour of the exposure period.BS ISO 9022-2 pdf download.

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