GB/T 12085.20-2022Optics and photonics - Environmental test methods - Part 20: Humid atmosphere containing sulfur dioxide or hydrogen sulfide (English PDF)

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"

drafted.

This document is part 20 of GB/T 12085 "Environmental test methods for optics and photonics". GB/T 12085 has been released to

the next part.

--- Part 1.Terminology, test scope;

--- Part 2.Low temperature, high temperature, damp heat;

--- Part 3.Mechanical forces;

--- Part 4.Salt spray;

--- Part 6.Sand and dust;

--- Part 7.Dripping water and rain;

--- Part 8.High internal pressure, low internal pressure, immersion;

--- Part 9.Solar radiation and weathering;

--- Part 11.Mildew;

--- Part 12.Pollution;

--- Part 14.Dew, frost, ice;

--- Part 17.Comprehensive test of pollution and solar radiation;

--- Part 20.Moist air containing sulfur dioxide and hydrogen sulfide;

--- Part 22.Comprehensive test of low temperature, high temperature or temperature change and impact or random vibration;

--- Part 23.Comprehensive test of low pressure and low temperature, atmospheric temperature, high temperature or damp heat.

This document replaces GB/T 12085.20-2011 "Environmental test methods for optical and optical instruments - Part 20.Containing sulfur dioxide, sulfur

Moisture of Hydrogenated Air". Compared with GB/T 12085.20-2011, except for structural adjustment and editorial changes, the main technical changes are as follows.

--- Change "optical instruments" in the full text to "optical and photonics instruments";

--- Changed the applicable boundaries of "scope" (see Chapter 1, Chapter 1 of the.2011 edition);

--- Changed the content of the environmental test mark (see Chapter 7, Chapter 6 of the.2011 edition).

This document is modified using ISO 9022-20.2015 "Optics and Photonics Environmental Test Methods Part 20.Containing sulfur dioxide, sulfur

Hydrogen Moisture Air".

Compared with ISO 9022-20.2015, this document has the following structural adjustments.

--- Added "Terms and Definitions" chapter;

---In order to avoid overhanging segments, 5.1 has been added, and the subsequent article numbers are extended.

The technical differences between this document and ISO 9022-20.2015 and their reasons are as follows.

--- Change "optical instrument" in the full text to "optical and photonics instrument" to meet the requirements of the application field of the optical industry;

--- Replaced ISO 9022-1 (see 6.1, 6.2, Chapter 7) with the normatively cited GB/T 12085.1 to adapt to our country's technical regulations

parts to improve operability.

The following editorial changes have been made to this document.

--- In Chapter 7, ISO 9022 is replaced with GB/T 12085 (all parts) cited for information;

--- In Appendix A, IEC 60721-3-4 is replaced with GB/T 4798.4 cited for information.

Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.

Introduction

Optical and photonic instruments are widely used in various fields of national economy and international science and technology, due to the very complex environmental conditions of their use and transportation.

There are various environmental conditions, such as physical, chemical, biological, climatic and electrical, which will make optical and photonic instruments

The performance of the device has changed and it cannot function properly.

In view of the above reasons, in order to ensure the quality of optical and photonics instrument products, it is necessary to simulate a variety of complex changes in environmental conditions.

It is necessary to conduct tests on optical and photonics instrument products to assess their ability to withstand harsh environmental conditions, so GB/T 12085 includes test conditions,

Conditional tests, test procedures, environmental test markings, etc. At the same time, since there are many environmental conditions and they belong to different types, in order to facilitate the

For the implementation of the standard, GB/T 12085 is to be divided into 15 parts according to the type of environmental conditions.

--- Part 1.Terminology, test scope. The purpose is to unify the terms and definitions of environmental test methods, test procedures and environmental tests

mark.

--- Part 2.Low temperature, high temperature, damp heat. The purpose is to study the optical, climatic, mechanical, chemical and electrical (including electrostatic) of the sample, etc.

The degree to which properties are affected by temperature and humidity.

--- Part 3.Mechanical forces. The purpose is to study the optical, climatic, mechanical, chemical and electrical (including electrostatic) properties of the sample

The degree of change that is affected by mechanical forces.

--- Part 4.Salt spray. The purpose is to evaluate the ability of the instrument surface and protective coating (plating) to resist salt spray.

--- Part 6.Sand and dust. The purpose is to study the optical, climatic, mechanical, chemical and electrical (including electrostatic) properties of the samples affected by sand

The degree of change in the impact of dust.

--- Part 7.dripping, raining. The purpose is to study the optical, climatic, mechanical, chemical and electrical (including electrostatic) properties of the sample

The degree of change affected by dripping water and rain.

--- Part 8.High internal pressure, low internal pressure, immersion. The purpose is to study the optical, climatic, mechanical, chemical and electrical (including static

The degree to which properties such as electricity are affected by high pressure, low pressure, or immersion in the ambient gas.

--- Part 9.Solar radiation and weathering. The purpose is to study the optical, climatic, mechanical, chemical and electrical (including electrostatic) of the sample, etc.

The degree to which a characteristic is affected by solar radiation or wind energy (solar exposure, damp heat).

--- Part 11.Mildew. The purpose is to study the optical, climatic, mechanical, chemical and electrical (including electrostatic) properties of the sample by

The degree of influence of mold growth, and evaluation of mold metabolites (such as enzymes or acids) cause corrosion of parts or cause

Severity of circuit board short circuit, etc.

--- Part 12.Pollution. The purpose is to study the instrument, especially the surface of the instrument, the coating or the composite material exposed to the test for a short time.

resistance in the agent.

--- Part 14.Dew, frost, ice. The purpose is to study the optical, climatic, mechanical, chemical and electrical (including electrostatic) properties of the sample

Degree of exposure to dew, frost, and ice.

--- Part 17.Pollution, solar radiation comprehensive test. The purpose is to study the instrument, especially the surface, coating or composite material of the instrument

The material is resistant to corrosion by reagents and solar radiation in a short time.

--- Part 20.Moist air containing sulfur dioxide and hydrogen sulfide. The purpose is to study the optical, climatic, mechanical, chemical and electrical properties of the sample

(including static electricity) and other properties are affected by sulfur dioxide or hydrogen sulfide.

--- Part 22.Comprehensive test for low temperature, high temperature or temperature change and impact or random vibration. The purpose is to study the optical, gas and

Climatic, mechanical, chemical and electrical (including electrostatic) properties are affected by a combination of low temperature, high temperature or temperature change and impact or random vibration

The degree of change in impact.

--- Part 23.Comprehensive test of low pressure and low temperature, atmospheric temperature, high temperature or damp heat. The purpose is to study the optical, climatic, mechanical properties of the sample

The degree to which mechanical, chemical and electrical (including electrostatic) performance characteristics are affected by a combination of low and low, ambient or elevated temperatures.

Optical and Photonics Environmental Test Methods

Part 20.Moist air containing sulfur dioxide and hydrogen sulfide

1 Scope

This document describes the environmental test method for the optical and photonics test in humid air containing sulfur dioxide and hydrogen sulfide.

This document applies to optical and photonic instruments and components from other fields such as mechanical, chemical and electronic equipment containing dioxide

Moist air test for sulfur and hydrogen sulfide.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations

documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to

this document.

GB/T 12085.1 Optical and Photonics Environmental Test Methods Part 1.Terminology, Test Scope (GB/T 12085.1-2022,

ISO 9022-1.2016, MOD)

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 General requirements

The sulfur dioxide and hydrogen sulfide used for the test should be chemically pure gases, taken from natural compression cylinders. See Appendix A for a suitable test setup.

During the test, the sample should not be directly exposed to sunlight, and there should be no condensation in the test chamber (room) or the sample itself. Therefore, in the test

Before the test chamber (chamber), the sample should be heated to 2K or 3K higher than the preset test chamber (chamber) temperature. If multiple specimens are tested simultaneously, the

The samples or between the samples and the test chamber (chamber) walls should not be in contact with each other. The sample volume should not exceed 50% of the test chamber (chamber) volume (exposed area).

After the start of the test, the sample should reach the required test conditions within 2h. During the required exposure time, the test should not be interrupted. when test gas

When the body is changed, the test gas used last time should be completely exhausted from the test chamber (chamber). Absorbing sulfur dioxide should not be used in the test chamber (room).

and hydrogen sulfide materials.

5 Condition Test