IEC 60068-3-11-2007 环境测试.第3-11部分:支持文件和指南.气候试验室内条件不确定性的计算

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标准号:IEC 60068-3-11-2007
中文标准名称:环境测试.第3-11部分:支持文件和指南.气候试验室内条件不确定性的计算
英文标准名称:Environmental testing - Part 3-11: Supporting documentation and guidance - Calculation of uncertainty of conditions in climatic test chambers
标准类型:A21
发布日期:1999/12/31 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:A21
国际标准分类号:19.040
适用范围:This part of IEC 60068 demonstrates how to estimate the uncertainty of steady-statetemperature and humidity conditions in temperature and humidity chambers. Since this isinextricably linked to the methods of measurement, these are also described.This standard is equally applicable to all environmental enclosures, including rooms orlaboratories. The methods used apply both to temperature chambers and combinedtemperature and humidity chambers.This standard is meant to help everyone using climatic test chambers. Those already familiarwith uncertainty of measurement will find it useful for guidance on typical sources ofuncertainty and how they should be quantified and combined. It is also intended to assist thefirst-time or occasional user who has little or no knowledge of the subject.To discuss uncertainty, it is important first to understand what is being measured orcharacterized. The calibration or characterization of the performance of a chamber isconcerned with the humidity and temperature of the air in the chamber, as experienced by theitem under test, at a given set point. This should not be confused with characterizing orcalibrating the chamber sensor, which is a separate matter.

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