GB/T 5170.18-2005
AbolishedInspection methods for basic parameters of Environmental testing equipments for electric and electronic products -- Composite temperature/humidity cyclic testing equipments
电工电子产品环境试验设备基本参数检定方法 温度/ 湿度组合循环试验设备
📋 Scope / 适用范围 ai_extracted
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📝 Foreword / 前言 ai_extracted
This section is a part of GB/T 5170, "Inspection methods for basic parameters of environmental testing equipment for electric and electronic products." This section is a revision of GB/T 5170.18-1987. Compared with GB/T 5170.18-1987, the main technical changes are as follows: — It is clarified that this section applies to periodic inspection of environmental testing equipment during use, to distinguish it from product type tests, factory inspections, etc.; — A chapter on "Normative references" has been added; — In the inspection items, the items "Temperature difference between working chamber wall and working space" and "Radiation coefficient of working chamber wall" have been deleted; — In the chapter "Main instruments and requirements for inspection," requirements for the expanded uncertainty (k=2) of the instruments are provided; — A chapter on "Inspection conditions" has been added; — For the number of temperature measurement points, the boundary of the working space volume of the equipment has been changed from "1 m³" to "2 m³." For equipment with a volume greater than 2 m³, the number of measurement points for temperature and air velocity has been reduced from 21 to 15; — During periodic inspection of test equipment, the measurement time for "temperature deviation and relative humidity deviation" has been shortened to 30 min; — In "Data processing and inspection results," the calculation formulas for "temperature deviation, temperature fluctuation, temperature uniformity, humidity deviation, temperature change rate, and air velocity" have been refined; the sections "Adjustment of environmental parameter field" and "Range of correction values for test equipment instruments" have been added, with necessary explanations for the limited ranges; — The appendix of this section provides "Measurement of relative humidity using the psychrometric method"; — The record tables have been deleted. This section is proposed by China Electrical Equipment Industry Association. This section is under the jurisdiction of the National Technical Committee for Standardization of Environmental Technology for Electric and Electronic Products. This section is drafted by the Fifth Research Institute of the Ministry of Information Industry. The main drafters of this section are Xie Chenhao and Lai Wenguang. The previous versions of the standard replaced by this section are as follows: — GB/T 5170.18-1987 GB/T 5170.18-2005 Inspection methods for basic parameters of environmental testing equipment for electric and electronic products Temperature/humidity combined cycle testing equipment
本部分是GB/T 5170《电工电子产品环境试验设备基本参数检定方法》的一个部分。 本部分是对GB/T 5170.18-1987的修订，与GB/T 5170. 18-1987相比，技术内容主要有如下 变化: — 明确本部分适用于环境试验设备在使用期间的周期检定，以区别产品的型式检验、出厂检 验等; — 增加了“规范性引用文件”一章; — 在检定项目中，删除了“工作室内壁与工作空间温差”和“工作室内壁辐射系数”两个项目; — 在“检定用主要仪器及要求”一章中，给出了仪器的扩展不确定度(k=2)的要求; — 增加了“检定条件”一章; — 对于温度测量点数量，设备的工作空间容积由“以1 m，分界”改为“以2 m“分界”，对于“大于 2m“的设备”，温度和风速的测量点由21点减少为15点; — 周期检定试验设备时，“温度偏差、相对湿度偏差”的测量时间缩短为30 min; — 在“数据处理与检定结果”中，给小了“温度偏差、温度波动度温度均匀度、湿度偏差、温度变化 速率、风速”的计算公式;增加了“环境参数场的调整”和“试验设备仪表修正值的范围”，并且对 限用的范围给予了必要的说明; — 本部分的附录中给出“干湿表法恻量相对湿度，; — 删除了记录表格。 本部分由中国电器工业协会提出 本部分由全国电工电子产品环境技术标准化技术委员会归口。 本部分起草单位:信息产业部电子第五研究所。 本部分主要起草人:谢晨浩、赖文光。 本部分所代替标准的历次版本发布情况: — GB/T 5170.18- 19870 GB/T 5170.18- 2005 电工电子产品环境试验设备 基本参数检定方法 温度/湿度组合循环试验设备
📚 References & Relations / 引用与关联
🔗 Related Standards / 同类标准
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