GB/T 12085.7-2022Optics and photonics - Environmental test methods - Part 7: Resistance to drip or rain (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 7 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 12085.7-2010 "Environmental test methods for optics and optical instruments - Part 7.Dripping water and rain", and

Compared with GB/T 12085.7-2010, in addition to 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.2010 edition);

--- Change the note of Table 1 to the paragraph in the table (see Table 1, Table 1 of the.2010 edition);

--- Changed the content of the environmental test mark (see Chapter 7, Chapter 6 of the.2010 edition).

This document is modified using ISO 9022-7.2015 "Environmental test methods for optics and photonics - Part 7.Dripping water and rain".

Compared with ISO 9022-7.2015, this document has the following structural adjustments.

--- Added "Terms and Definitions" chapter.

The technical differences between this document and ISO 9022-7.2015 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;

--- Replace ISO 9022-1 (see 6.1, Chapter 7) with the normatively cited GB/T 12085.1 to adapt to the technical conditions of our country,

improve operability;

--- Change the note in Table 1 to the paragraph in the table (see Table 1) to conform to our standard terminology;

--- Change the note in Figure 1 to the paragraph in the figure (see Figure 1) to conform to the Chinese standard terminology;

--- Deleted Figure 4 and Figure A.3 to conform to the status quo of my country's test equipment.

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;

---Appendix A replaces ISO 9022-2 with GB/T 12085.2 cited for information, and GB/T 12085.8 replaces

ISO 9022-8.

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

The degree to which properties such as these 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 to which sexuality 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 sample by

The degree of variation in the effects of sand and 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

The degree to which properties such as these are 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 the evaluation of mold metabolites (such as enzymes or acids) cause corrosion to parts or cause

Severity of circuit board short circuit, etc.

--- Part 12.Pollution. The purpose is to study instruments, especially instrument surfaces, coatings or composite materials exposed to short-term exposure to

Resistance in reagents.

--- 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

Properties such as gas (including static electricity) 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,

Climatic, mechanical, chemical and electrical (including electrostatic) properties subject to combined low temperature, high temperature or temperature variation with impact or random vibration

the degree of change in the impact.

--- Part 23.Comprehensive test of low pressure and low temperature, atmospheric temperature, high temperature or damp heat. The purpose is to study the optics, climate,

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 7.Dripping and rain

1 Scope

This document describes environmental test methods for optics and photonics drip and rain tests.

This document applies to optical and photonic instruments, including drip and rain tests from other fields (such as mechanical, chemical and electronic equipment).

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 Test conditions

The temperature of the water should be lower than the temperature of the sample at the beginning of the exposure of the sample. During the exposure test, the specimen shall be mounted on a rotating table for easy access.

In the operating position, the rotational speed of the table around the axis perpendicular to the sprinkler area is 1r/min~2r/min. Before the test, the test should be measured

The desired drip rate and rain rate are embedded in the central position of the sprinkler area occupied by the sample.

The water spray rate shall be measured with a rain gauge. If there are many measurement areas, or several measurement methods are used, the average of all measurement results should be

Conditional Test Method 72 Drop Water Severity Rating (Table 1), Conditioned Test Method 73 Constant Rain Severity Rating (Table 2), Conditioned Test Method

Rain rate requirements specified in Law 74 Plus Wind Speed Rain Severity Rating (Table 3).

Table 1

Severe Level 01 02 03 04 05 06 07 08 09

Sample temperature at the beginning of exposure/ degrees C 15~35

Temperature difference between sample and water at the beginning of exposure/K 2~20

The height of the water level above the spray plate/mm 10 40 75

Drip rate/(mm/min) 1.5+/-0.5 3.5+/-1 5.5+/-1

Exposure time/min 1 5 15 5 15 30 5 15 30

Working status 0 or 1 or 2

For the severity levels of 01 to 06, let the water flow out evenly from each hole of the drip plate before exposure, and finally fill the test instrument. After the above operations are completed, the water can be

The position can be reduced to the required volume, which can be realized by the overflow hole. Surfactants should not be used.