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
influence of low 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 mountainous 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 temperature.
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 equalization.
Annex A explains the intent of the different types of tests.
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