ISO 9022-23:2023 PDF

Scope: This document 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 document 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.

ISO 9022-23:2023 Referenced Document

ISO 9022-1 Optics and photonics - Environmental test methods - Part 1: Definitions, extent of testing
ISO 9022-8 Optics and photonics - Environmental test methods - Part 8: High internal pressure, low internal pressure, immersion (includes Redline Version)

2023 ISO 9022-23:2023 Optics and photonics — Environmental test methods — Part 23: Low pressure combined with cold, ambient temperature and dry or damp heat
2016 ISO 9022-23:2016 Optics and photonics - Environmental test methods - Part 23: Low pressure combined with cold, ambient temperature and dry or damp heat
2013 ISO 9022-23:2013 Optics and photonics.Environmental test methods.Part 23: Low pressure combined with cold, ambient temperature and dry and damp heat